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E. PREAMBLES and SPECIFICATIONS

Renovation and Rehabilitation of

The Kindergarten of

The Jerusalem Princess Basma Center

GENERAL CONDITIONS OF CONTRACT

In relation to tender No. (CATD-A150401)

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PREAMBLES and SPECIFICATIONS

Table of Contents

1. Introduction

2. Interpretation of Contract Documents

3. Bills of Quantities

4. Pricing

5. Quantities

6. Items in Bills of Quantities

7. Measurement

8. Descriptions

9. Abbreviations

10. Definitions

11. Protection

12. Shop Drawings / coordinated drawings

13. As Built Drawings.

14. Cutting and Patching

15. Excavation

16. Concrete Work

17. Block-work

18. Plastering

19. Stonework

20. Carpentry and Joinery Work

21. Metal (Steel and Aluminum) Works.

22. Tiling, Flooring and Marble

23. Roof Finishes

24. Mechanical Work

25. Electrical Work

26. Paintings and Decorating

27. Asphalt Works

28. Demolitions and Alterations

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PREAMBLES and SPECIFICATIONS

1. Introduction:

These Pricing Preambles set out the basis on which the Bills of quantities have been

prepared. Notwithstanding the provisions of these pricing preambles, the Contractor is

reminded that the Bid Drawings and the Specifications form part of the Bid Documents

and as such mutually refer to the intent of the Bid Documents.

Where a discrepancy occurs it is deemed that the Contractor has allowed for the intent of

the Bid Documents unless this is clarified specifically at the time of Bid.

2. Interpretation of Contract Documents

A. Ownership of Documents: All drawings, specifications, computations, sketches,

test data, survey results, photographs, renderings and other material relating to the

Work, whether furnished to or prepared by the Contractor, are the property of

C.A.T.D. Group. Materials or information there from shall be used only in

connection with the Work When requested.

B. The Architect or his representative shall give all orders and directions

contemplated under the Contract relative to the execution of the work. Architect

shall determine the amount, quality, acceptability and fitness of the work and shall

decide all questions that may arise in relation to said Work. The Architect’s

estimates and decisions shall be final except as otherwise expressly provided.

C. Any differences or conflicts concerning performance, which may arise between the

Contractor and other Contractors performing Work for the Owner, shall be

adjusted and determined by the Architect.

D. The table of contents, titles, captions, headings, running headlines, and marginal

notes contained herein and in said documents are intended to facilitate reference to

various provisions of the Contract Documents and in no way affect the

interpretation of the provisions to which they refer.

3. Bills of Quantities:

The Bills of Quantities define the items which are measurable and the units of

measurement represents the entire work to be carried out in accordance with the

Drawings and the Specifications. The measurement items in the Bills of Quantities are

to be accepted as the full interpretation of the requirement of the Drawings and

Specifications. “Descriptions" are given in outline only, the Contractor is to refer to the

Specifications and Drawings and make himself familiar with the requirements.

No additional measured items will be allowed to interpret further the information so

given. Other requirements which are not measurable in terms of quantity of labor and

materials ( e.g.. specialist supervision, shop drawings, bar bending schedules, as built

drawings, samples, tests, mock-ups, maintenance, materials, guarantees and the like )

and are not given as specific items in the Bills, are to be included in the prices of the

measured items. The method of measurement for the Contract is thus established by the

measured items and units of the measurement in the Bills of Quantities. No other

measurement method shall be used to measure the executed works.

The same method of measurement and no other will be used in re-measuring the executed

work.

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4. Pricing:

The Contractor shall satisfy himself as to the meaning of every item in the Bills of

Quantities and the rates and prices inserted by him shall cover all Works required by the

Contract Documents. All costs in connection with the proper and successful

construction, completion and maintenance of the Works including, but not limited to,

completion of all temporary works, furnishing all materials, equipment, supply and

appurtenance, providing all construction Plants, equipment, tools, sampling, testing,

profits, overheads, charges, provision of guarantees, performing all necessary labor and

supervision and other cost of whatsoever nature necessary to fully complete the Works,

shall be included in the unit and lump sum prices called for in the bills of Quantities. All

Works not specifically set fourth as a pay item in the Bills of Quantities shall be

considered as subsidiary obligation of the Contractor and all costs in connection

therewith shall be included in the Priced Bid. Prices shall be deemed to include for all

straight ranking and circular cutting and consequent waste.

5. Quantities:

All estimated quantities stipulated in the Bills of Quantities or other Bid Documents are

approximate and are to be used only;

as a basis for estimating the probable cost of the work and

For the purpose of comparing the bids submitted for the work.

The actual amount of work done under each unit price items may differ from the

estimated quantities. The basis of payment for work will be the actual quantities. The

Contractor agrees that he will make no claim for damages, anticipated profits or

otherwise on account of any difference between the amounts of work actually performed

and the estimated amount.

6. Items in Bills of Quantities

Such items are the subject of re-measurement of completion in accordance with Clause

56 of the General Conditions of Contract. Quantities given in the Bills are based upon

measurement from the Contract Drawings and Specifications.

7. Measurement

Metric measurements and weights have been used throughout the Bills of Quantities.

Work is measured net as fixed in position and each measurement is taken to the nearest

centimeter. Fractions of a centimeter less than half are disregarded and all other fractions

are regarded as whole centimeters. This principle shall not apply to dimensions stated in

item descriptions. Where minimum deductions of voids are dealt with they refer only to

openings or voids, which are wholly within the boundaries of measured areas. Openings

or voids, which are at the boundaries of measured areas, are always the subject of

deduction irrespective of size.

8. Descriptions

The order of stating dimensions in descriptions is generally in the sequence of Length,

Width and Height. Unless otherwise stated in the Bills of Quantities or herein, all

measured items are deemed to include supply and fix in place complete, thus all

measured items shall include all incidentals to complete the work in a proper manner

such as but not limited to the following:

( a ) Labor.

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( b ) Materials, including all cost in connection herewith ( e.g. conveyance, delivery,

unloading, storing, handling, lowering into position and the like ).

( c ) Customs and import duties as applicable, insurance, levies and the like.

( d ) All shop treatment of materials ( e.g. Preservation of timbers, galvanizing,

priming, chrome plating, stove enameling, anodizing and the like, pipe wrapping,

coatings, etc.).

( e ) Fitting and fixing materials in position including all necessary fixing devices and

materials.

( f ) Commissioning & use of plant.

( g ) Disposal of waste of material.

( h ) Square, raking or curved cutting.

( i ) Work in volumes, areas and length of any size, no separate items being

measured for isolated work or work in small quantities, short length, narrow

widths, etc.

Junction between straight, raking and curved work are in all cases included with the

work in which they occur.

Certain items are referenced directly to detail drawings to eliminate detailed description.

All such reference includes all work to execute the detail.

Where Specification clauses and / or detail drawing numbers are referred to in a

description such information is provided for convenience only and the Contractor is to

note that all other relevant Specification requirements and relevant drawings and details

are to be taken into account.

9. Abbreviations.

The following abbreviations are used throughout the Bills of Quantities.

mm Millimeter

cm Centimeter

M.R. Linear meter

M.S. Square meter

M.C Cubic Meter

L.S. Lump Sum

NO. Number

Kg. Kilogram

Ref. Reference

10. Definitions

The terms “include", “is included “, “including “, and similar, are used herein to

indicate that the items and are not specifically mentioned in the descriptions but

the costs of which are to be included in the measured items.

Such references are not comprehensive and are for convenience only and the

Contractor is to note that all relevant requirements of the Specifications and

Drawings are to be taken into account in the measured items.

The word “Site” used in the Bills of Quantities means the whole of the areas

within the Contract limit lies for this Contract as shown on the Contract

Drawings. With reference to the clearance of debris, rubbish, trash, excavated

material and the like the definition is extended to include the whole of the site.

The word “ditto” used in the Bills of Quantities means the repetition of all or

part of the preceding item as applicable to complete the sense of the item.

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The word “ extra “ used in the Bills of Quantities means the additional cost of

the item of work in question over and above the cost of work already measured.

The word “Owner” in this Document is synonymous with “Client” and

“Employer”.

The word “Bid” in this Document is synonymous with “Tender” and the word

“Bidder” in this Document is synonymous with “Tenderer”.

11. Protection.

All rates in the Bills of Quantities shall include for protection as required and deemed

necessary.

12. Shop Drawings / coordinated drawings.

All rates shall include where required for producing shop drawings & coordinated

drawings and supporting calculations.

13. As Built Drawings.

All rates shall include where required for producing as-built drawings and supporting

calculations.

14. Cutting and Patching.

The Contractor shall be responsible for all cutting, patching and making good for all

trades for all work and his prices will be deemed to include for all such cutting and

patching and making good.

15. Excavation:

A) Measurements:

1. Excavation for foundation, trenches….etc. shall be for the actual dimensions

shown on Drawings, and to be measured from Natural Ground level or

Reduced Level ( which is lower ) , i.e.

a) From Reduced Level when R.L. is lower than N.G.L.

b) From N.G.L. when N.G.L. is lower than the Reduced Level.

2. Allowance for working space is not applicable; unless it is clearly specified in

the Special Conditions.

3. Excavation for foundation of retaining walls is to be measured from Lower

Reduced level, or from lower Natural Ground level (as stated in Item 1.)

4. Trench excavation and back filling for drain and water pipes and electricity

cables and excavating for manholes and percolation pits is included in the

items of pipe work, cabling, manholes and percolation pits and will not be

measured separately .

5. Price to include removal of site obstacles, rocks, trees ….etc. and removal of

all debris from site. Price also to include maintaining all trees that is not

obstructing the buildings, boundary walls, courts and roads.

6. Each layer of back filling should be tested separately at the contractor’s

expense then the next layer can be applied.

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7. Co- ordination with all local authorities to facilitate the works, removal of

obstacles or for diversion of roads, services, etc. ….is the contractor’s

responsibility and is included in his rate.

8. Excavation shall be measured by cubic volume. The volume shall be calculated

by taking the area of the slab, footing, base and the like and multiplying by the

vertical depth. No allowance will be made for increase in bulk after excavation.

No allowance will be made for working space.

9. Hard-core beds shall be measured superficially, over consolidated depth

including finishing, to a maximum depth of 15cm or as stated clearly in the

Bills of Quantities. Filling required below this 15cm. depth is intended to be of

suitable materials from the excavations and no extra will be paid for hard-core

used in lieu thereof.

B) Rates:

1) Rates for excavation shall include for:

a) Removal of all site obstacles and clearing the site of all rubbish,

debris, shrubs, trees, bushes, plants, fence and the like including

grubbing up roots and foundations prior to the commencement of the

Works.

b) Excavation to any depth.

c) Excavation in any material whatsoever found, including rock.

d) Excavating circular on plan.

e) Allowance for working space.

f) Excavating below water-table level.

g) Keeping excavations clear of water.

h) Leveling, ramming, trimming and grading bottoms of excavations in

rock.

i) Planking and strutting.

j) Selecting Suitable material from the excavations and returning, filling

watering and ramming in layers around foundations and to underside

of hard-core beds including all multiple handling and transport about

the site.

(2) Rates for hard-core beds shall include for:

(a) Trimming and leveling ground under.

(b) Watering, ramming and consolidation.

(c) Loss of bulk in consolidation.

(d) Finishing top surface to receive concrete, paving and the like.

16. Concrete Work

(a) Measurements

1. Concrete works shall be measured net as per Drawings or as specified by the

Architect.

2. Each item of concrete works shall be measured in the unit described in the Bills of

Quantities.

3. All recesses, openings or any other space not actually filled with concrete shall be

deducted in calculating the volume or the area for payment.

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4. Any extra concrete, which was cast due to the Contractor’s negligence and is not

marked specifically on the Drawings, shall not be measured for payment.

5. Suspended concrete slabs shall be measured superficially. Drop beams are included

in this measurement and no separate item for drop beams is provided.

6. In case of using masonry exterior walls measurements for the suspended reinforced

concrete slabs will be made from the centers of these walls.

7. The height of columns shall measure excluding the depth of beams, slabs and the like.

8. Prices for reinforced concrete elements shall include reinforcement.

9. Prices for ribbed slabs shall include reinforcement and hollow blocks and no separate

item for blocks will be provided.

(b) Rates

(1) Rates for concrete work shall include for:

1. Labor

2. Supply and storage of cement,

3. Supply and storage of aggregates and water ,

4. Mixing and placing in position,

5. Packing and tamping around reinforcement ,

6. Vibrating,

7. Grading, tamping and trowelling,

8. Installing of form work, shutters and supports,

9. Supplying reinforcement and storing on site including cutting, bending and fixing

in position and providing all tying wire, spacers, shop drawings and testing,

10.Finish to exposed faces ,

11.Curing,

12.Work of any cross-sectional area ,

13.Work at any height ,

14.Curved work ,

15.Forming mortises and grouting in ,

16.Forming grooves, throats, holes, chases, rebates, chamfers, splayed angles,

moldings and the like,

17.Casting in or cutting and pinning plugs, holdfasts, brackets, and the like .

18.Hoisting to any height and bedding, jointing and pointing,

19.Wall ties .

20.Hollow blocks for ribbed slabs including supply, storage, laying and arranging.

21.Taking samples, performing any laboratory tests that may be required by the

Architect and providing certificates of test results.

17. Block-work (A) Measurements

One) Block work shall be measured net in squared meters. No deductions will be made

for voids or openings of less than 0.5 square meters in area.

Two) Thickness given refers to the thickness shown on the drawings and no allowance

will be made for any additional thickness due to uneven or bad workmanship.

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(B) Rates

(a) Rates for block work shall include for:

1. Labor

2. Supply and storage of cement,

3. Supply and storage of aggregates, water and other materials,

4. Manufacture, curing and supply of blocks,

5. Laying blocks including horizontal and vertical mortar joints,

6. Using closed ends blocks as required by the Architect at all ends, openings,

services locations etc.

7. Work of all classifications in any location,

8. Finishing fair and pointing to exposed faces,

9. Rough and fair cutting ,

10. Cutting or leaving holes, chases, grooves, mortises, sinkings and the like

and making good, -

11. Cutting and pinning or building in ends of lintels, steps, timbers, rails,

brackets, steel sections and the like, and making good,

12. Concrete filling and reinforcing rods to cavities at quoins and door and

window openings,

13. Cutting and bonding at angles, intersections and the like .

14. Reinforced concrete lintels of same thickness as block and 20 cm. high all

over the length of the wall over openings or at a height of 2 m. including

scaffolding and reinforcement of 4 12 and stirrups of 18 every 20 cm.

18. Plastering

A) Measurements:

Plastering to all areas shall be measured net in squared meters including openings which

are less than 0.25 squared meters in area.

B) Rates

The price shall include for running rules:

One) Supply and storage of cement,

Two) Supply and storage of aggregates and water,

Three)Clearing of walls and other elements to be plastered and spraying with water,

Four) Installation of scaffolding and dismantling the same,

Five) Mixing and applying plastering to any surface, location, area, width and height,

Six) Plastering to jambs and reveals of openings, side of columns, window sills, etc.

Seven)All narrow widths for taking out joints on block walls or backing concrete face

for key , for making good to frames around pipes and other fittings,

Eight) Making good around steel sections, pipes, tubes, bars, brackets, outlets and the

like,

Nine) Curing,

Ten) Expanded metal lath, corner mesh, angle beads at all corners and plaster stops at

openings, edges, expansion joints, sills,…etc. and where ever needed and

according to the instructions of the Architect,

Eleven)Labor and all incidentals required as specified and/or detailed in Specifications

and Drawings.

19. Stonework (A) Measurements

One)Stone works shall be measured net in squared meters.

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Two) Thickness given refers to the nominal thickness or the thickness shown on the

Drawing. No allowance will be made for any additional thickness due to uneven or

bad workmanship or to variations in the thickness of the stone.

Three) Rubble stone walls shall be measured by volume.

Four) Stonework facing for drop beams of the suspended slabs will be measured same

as the item of stone walls unless otherwise is specified in the Bills of Quantities.

(B) Rates

Rates for stonework shall include for:

One)Labor,

Two)Supply and storage of cement,

Three)Supply and storage of stone, aggregates, water and other materials,

Four)Shaping of the apparent faces of stones as per Drawings and the Instructions of

the Architect,

Five)All special pieces such as corners, jambs, pieces around windows and doors and

the like,

Six) Fabricated wire mesh, dowels, hangers and all tying and fixing tools for stone

cladding works,

Seven)Laying stones including coursing, bonding, and all mortar joints,

Eight)Work of all classifications in any location,

Nine)Face or surface finishing including all openings, returns, reveals and the like,

Ten)Rough and fair cutting,

Eleven)Tying to backing material,

Twelve)Concrete and block backing where included with stonework item,

Thirteen)Cutting or leaving holes, chases, grooves, mortices, sinkings and the like, and

making good ,

Fourteen)Cutting and pinning or building in ends of lintels, steps, timbers, rails,

brackets, steel sections and the like, and making good .

Fifteen)Pointing including cleaning of stones, scaffolding and dismantling the same and

all incidentals.

Sixteen) Lintels and other reinforced concrete elements including reinforcement except

those elements specified in separate items in the Bills of Quantities.

20. Carpentry and Joinery Work (A) Measurements

One) Sizes of timber given in the Bills of Quantities are finished sizes and shall be as

per Drawings,

Two) Sizes of doors and other items mentioned in the Bills of Quantities shall allow

for tolerance to suit the structural openings as per Drawings,

Three) Wooden doors and pair of doors shall be measured in number or in squared

meters for the structural opening or as mentioned otherwise in the Bills of

Quantities,

Four) Blackboards shall be measured in number or in squared meters as mentioned in

the Bills of Quantities.

Five) Wall protection wooden rails shall be measured in linear meter,

Six) Cloth hangers and hanger wooden base shall be measured in number or in linear

meter as stated in the Bills of Quantities.

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(B) Rates

Rates for carpentry and joinery work shall include for:

One) Labor,

Two) Shop drawings,

Three)Any length of timber ,

Four) Joints in the running length of timber ,

Five) Raking, curved or circular work and labors ,

Six) Frames, architrave, chalk holders and other holders and kick plates,

Seven)Allowance for plastering and tiling and the like,

Eight) Forming holes, angles, ends, mitres, rebates, splayed edges, grooves, chamfers,

scribed edges, rounded edges, rounded corners, notches, sinkings, fitted ends, far

ends and the like,

Nine) Cutting and fitting around obstructions,

Ten) Forming moldings,

Eleven)Nosing, bed moulds, margins, and the like,

Twelve)Facing and edging to blackboard ,

Thirteen)Bedding and painting,

Fourteen)Grounds, blockings and backings,

Fifteen)Plugging concrete, blockwork, and stonework , and making good,

Sixteen)Ironmongery including cylindrical locks, handles, stoppers, screws, temporarily

fixing, re-fixing, oiling and adjusting,

Seventeen)Providing two keys for each lock including tagging,

Eighteen)Hardware including nails, screws, dowels, cramps and the like ,

Nineteen)Steel legs, brackets, bearers and other supports including painting,

Twenty)Glass and glazing including cutting to size and putty,

Twenty-one)Preparing surfaces to receive finishes,

Twenty-two)Painting, varnishing, polishing, oiling, and the like, to any area or width in

any location including work in multicolor and cutting in edges.

21. Metal (Steel and Aluminum) Works

(A) Measurements

Metal works shall be measured in number or in squared meters as stated in the Bills of

Quantities.

(B) Rates

(a) Rates for metalwork shall include for :

One)Labor,

Two)Preparing shop drawings,

Three)Cutting,

Four)Assembling,

Five)Welding grinding and joining,

Six)Drilling, countersinking, screwing, bolting and riveting,

Seven)Bedding and pinting,

Eight)Frames, including galvanized steel frames for Aluminum windows and architrave,

Nine)Lugs, plugs, holdfasts and the like,

Ten)Gaskets, sashes, double weather strips and external and internal silicon filling around

frames,

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Eleven)Ironmongery including locks, stoppers, handles, temporarily fixing, re-fixing, oiling

and adjusting,

Twelve)Providing two keys for each lock and padlock including tagging,

Thirteen)Hardware including cramps, dowels and the like,

Fourteen)Glass and glazing including cutting to size, putty and rubber,

Fifteen)Preparing surfaces for and painting one coat of primer before fixing,

Sixteen)Sealing,

Seventeen)Painting to any area or width in any location including work in multicolor and

cutting in edges.

Eighteen)All other accessories and incidentals required to execute the work.

22. Tilling, Flooring And Marble:

(A) Measurements

1. All tilling works (terrazzo, ceramics, marble) shall be measured net in squared

meters and the rate shall include skirting. Skirting will not be included in the

measurements..

2. Marble works for steps and treads of stairs shall be measured in linear meter. The

tread and the riser shall be measured as a single unit,

3. Marble works for sills for windows and other openings shall be measured in linear

meter or in squared meter as stated in the Bills of Quantities,

4. Marble works for urinals shall be measured in number,

5. Parapet copping shall be measured in linear meter,

6. Marble works for stair flight’s skirting shall be measured in linear meter except in

case it is included in (2) above as the case may be in the Bills of Quantities.

(B) Rates

1. Rates for finishes shall include for:

One)Supply and storage of cement,

Two)Supply and storage of aggregates and water,

Three)Mixing,

Four)Hacking concrete, applying cement slurry or raking out joints of blockwork to

form key,

Five)Application to any surface,

Six)Any width or area,

Seven)Any location and any height,

Eight)Beds, bedding and backing,

Nine)Finish to surface,

Ten)Finish to edges and arises,

Eleven)Grouting and pointing,

Twelve)Making good around steel sections, pipes, tubes, bars, brackets, outlets and

the like,

Thirteen)Finish to falls, cross falls and currents,

Fourteen)Forming bays including joints ,

Fifteen)Treating surfaces with dust proofer, hardener and the like,

Sixteen)Ends, intersections, angles, ramps, and the like on skirting,

Seventeen)Forming rounded top edges and coves at bottom on skirting,

Eighteen)Curing .

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(2) Rates for floor tilling: In addition to the related items stated above the rates for floor tiling

shall also include:

One)Supply, store and cure of tiles,

Two)Bedding and lining in cement and sand mortar

Three)Sand or concrete filling as required by the Specifications,

Four)Pointing and grouting with white cement,

Five) Forming holes,

Six)Forming grooves.

Seven)On site mechanical grinding and polishing.

(3) Rates for wall tilling: In addition to the related items stated above the rates for wall tilling

shall also include:

Eight)Supply, store and cure of tiles

Nine)Plastering,

Ten)Cutting and patching around the services and other openings,

Eleven)Mortar,

Twelve)Purpose made tiles including rounded edge tiles and bull nosed tiles,

Thirteen)Grouting, grinding, and cleaning.

23. Roof Finishes:

(A) Measurements

One) All finishes shall be measured superficially net unless other wise stated

clearly.

Two) All finishes, except triangular shaped fillets and cement and sand lining

to gutters, shall be measured superficially.

Three) Triangular shaped fillets and cement and sand lining to gutters shall

be measured run, unless otherwise stated clearly.

(B) Rates

(a) Rates for cement and sand work shall include for:

1. Supply and storage of cement (or otherwise shown in Appendix “B”).

2. Supply and storage of aggregates and water,

3. Mixing,

4. Hacking concrete, applying cement slurry or raking out joints of blockwork

to form key,

5. Application to any surface,

6. Any width or area,

7. Finish to surface,

8. Finish to falls, cross falls and currents,

9. Forming bays including joints,

10.Finish to edges and arrises,

11.Making good around steel sections, pipes, tubes, bars, brackets, outlets, and

the like,

12.Ends, intersections, ramps, and the like, on filletes,

(b) Rates for waterproofing shall include for :

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1. Preparation of surface,

2. Any area or width,

3. Cutting in edges.

4. Over laps, priming and treatment at the corners and floor drains .

5. Dressing over parapets and stub columns including forming groove to

receive edge of plasticised bitumen membrane and sealing with elastic sealer.

(c) Rates for roof sheeting shall include for:

1. Side and end laps, Fittings including bolts, hook bolts, screws and

washers,

2. Sheets of any width or length.

24. Mechanical Work: Section 00-General Conditions

1- Codes and Standards

The works shall be carried out in accordance with:

a . Latest edition of “ British Standard Code of Practice “ C,P.310: Water Supply .

b. latest edition of “British Standard Code of Practice “ C.P. 304: Sanitary Pipe work above

Ground .

c. Latest edition of “ British Standard Code of Practice “ C.P.305 Sanitary Appliances.

d. All other applicable British Standard Specifications and codes of practice

(Hereinafter referred to as B.S. and C.B. respectively).

e. ASME American Society of mechanical Architects.

f. ASTM American Society of Testing materials

g. The Architect’s Instructions.

2- Extent of the Works

The works include-unless otherwise specified-the supply, installation, testing and

commissioning , and delivering up clean and in working order the installations shown on the

drawings and specified in the specifications and bill of quantities including all details such as :

- Hot and cold water piping , and drain piping with all necessary fittings , valves , insulation,

coating , painting , color code identification as specified.

- The specified sanitary fixtures, with all necessary fittings and accessories. No less quality

than the specified units shall be accepted. (And the Architect is the only authorized person to

decide whether any proposed alternative in of better quality or not).

- Supply of three complete original catalogues for every item in the project.

- Supply of two plastified copies of the maintenance and operation manual for all items judged

to bead that by the Architect, for the item individually, or for a complete system when a system

is composed of more than one item.

- The Contractor shall undertake all modification demanded by the authorities in order to

comply with current regulations and produce all certificates, if any, from the authorities

without extra charge. Only if the regulations where issued after the signature of contract, and

resulting in additional permanent works and supplies , the Contractor will be reimbursed for

those , after reducing any sums , that are not marited, from the original prices .

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3- Extent of Contractor’s Duties:

At the commencement of works, within 2 weeks of the notice to proceed, the Contractor shall

investigate and report to the Architect, whether all materials and equipment to be supplied by

him to be used for the works, are available in the local market. If not available, the Contractor

shall, at this stage , place orders for the materials in question, and submit a copy to the

Architect. Failure to do so shall in no way relieve the Contractor from supplying all the

specified materials and equipment in time , and specially pipe components , adaptor and

accessories, and sanitary fixtures . In case the materials installation shall be achieved at a late

stage due to their nature such as the sanitary fixtures , the Contractor shall obtain all

information about them necessary to rough , chase and prepare for them within other works .

Existing materials or materials supplied by others to be used, connected or installed by the

Contractor, shall be carefully examined by him before usage. Any defect noted shall by

immediately report to the Architect.

The Contractor shall by responsible to verify all dimensions relative to his work by actual

measurement taken on site.

Approval by the Architect to any shop-drawing shall not relieve the Contractor from his

responsibilities, in case of error in that drawing, of taking all the necessary measures to adjust

the error and the results of the error on the executed works, and bear all expenses due to that.

Approval by the Architect to any equipment proposed by the Contractor shall not relieve the

latter from his responsibilities, in case of failure of that equipment to achieve the required

performance or job it was proposed for, and he shall replace the equipment on his charge by the

good one and bear all expenses and damage due to caused delays. The Architect shall also

approve the new replacing equipment.

4- Drawings:

Drawings and specifications are to be read as a whole and are to explain each other’s. Works

shown on the drawings and not described in the specifications or vice versa shall be executed

under the contract whether mentioned or not in the bills of quantities.

The drawings do not supposed to show minor detail for equipment or pipe work, etc. but are

intended to indicate the extent of the installations as designed together with sufficient

information for the Contractor to prepare his own detailed shop drawings and details for

fitting and erection in accordance with the design.

The Contractor shall make a COORDINATION SHOP DRAWINGS on which he shows all

services and works such as beams , column , foundations, electric wires and cables , pipes ,

ducts , etc.., before he proceeds to the construction of any of them , and shall solve the

problems of crossing and intersection among them , and shall submit this drawings for

approval before any works is carried out.

5- Materials And Workmanship :

All materials, equipment and accessories shall be new and in accordance with the requirements

of the specifications and the listed standards,

Uniformity of type and manufacturer of equipment and accessories is to be preserved as far as

practicable throughout the whole work.

The “APROVED EQUAL.” clause used in Bill of Quantities is to permit the proposal

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of another manufacturer’s products for the work, and the Architect’s decision

concerning equal product is final.

6. CONTRACTOR PRICE INCLUDED IN UNIT PRICE :

A. Delivery to the Site.

B. Product handling at site, including unloading, uncrossing and storage.

C.. Protection of product from elements and damage.

D. Labor for installation and finishing including the removal of waste material to approved

sites by local Authorities.

E. Other expenses required to complete installation.

F. All Required Testing , Adjusting , and Calibration.

G. All Documents Required in mechanical specifications.

H. Architecting and Administrative Work.

I. All works required in section ( 01 ) .

J. Contractor overhead and profit.

SECTION 01

BASIC MECHANICAL REQUIREMENTS

1. The air conditioning system is based on the following design conditions :

- Outside summer conditions : 35C of D.B.T. & 26C of W.B .T .

- Inside summer conditions : 24C of D.B.T. & 50% of H.R .

- Outside winter conditions : 0C of D.B .T.

- Inside winter conditions : 21C of D.B .T .

2. Code-required features shall be incorporated into the finished work, whether specifically

shown on the drawings or not, and with costs included in the bid.

3. Contractor shall promptly notify the Architect of any ambiguity, inconsistency, errors or

possible code violation which may become apparent during the bid

period. The Architect will provide a written interpretation.

Verbal interpretations will not be considered as binding.

4. Install equipment, materials and piping systems to provide required access for

servicing, maintenance, and general inspection. Co-ordinate the final location of

concealed equipment and devices requiring access with final location of required

access panels and doors. Allow ample space for removal of all parts that require

replacement or servicing. Piping systems shall not block service access of any

nature, such as filter removal, equipment access panels, cleaning of tubes, and

similar items.

5. Co-ordinate mechanical equipment and materials installation with other building

components.

6. Sequence, co-ordinate, and integrate installations of mechanical materials and

equipment for efficient flow of the Work. Give particular attention to large

equipment requiring positioning prior to closing-in the building.

7. Co-ordinate the cutting and patching of building components to accommodate the

installation of mechanical equipment and materials.

8. Where mounting heights are not detailed or dimensioned, install mechanical services

and overhead equipment to provide the maximum headroom possible.

9. Install mechanical equipment to facilitate maintenance and repair or replacement of

equipment components. As much as practical, connect equipment for ease of

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disconnecting, with minimum of interference with other installations.

10. Co-ordinate the installation of mechanical materials and equipment above ceilings

with suspension systems light fixtures, and other installations.

11. All materials, equipment and apparatus installed on the project shall be installed in

strict accordance with the manufacturer's printed instructions. Where specifically

noted, the manufacturer, or his authorised representative, shall certify, in writing, to

the Owner Architect, that the installation has been made in accordance with such

printed requirements.

12. Prepare and submit a set of co-ordination drawings showing major elements,

components and systems of mechanical equipment and materials in relationship with

other building components. Prepare drawings to an accurate scale of 1:100 or

larger. Indicate the locations of all equipment and materials, including clearances

for installing and maintaining insulation, servicing .

13. Lighting fixtures shall have precedence over air grilles and diffusers.

14. Do not endanger or damage installed Work through procedures and processes of

cutting and patching. no structural member may be cut without the written approval

of the Architect.

15. Arrange for repairs required to restore other works because of damage caused as a

result of mechanical installations.

16. No additional compensation will be authorised for cutting and patching Work that is

necessitated by ill-timed defective, or non-conforming installations.

17. Perform cutting , and patching of mechanical equipment and materials required to:

A. Uncover Work to provide for installation of ill-timed Work;

B. Remove and replace defective Work;

C. Remove and replace Work not confirming to requirements of the

Contract Documents;

D. Remove samples of installed Work as specified for testing;

E. Install equipment and materials in existing structures;

F. Upon written instructions from the Architect, uncover and restore Work to

provide for Architect observation of concealed Work.

18. Provide permanent operational data nameplate on each item of power operated

mechanical equipment, indicating manufacturer, product name, model number, serial

number, capacity, operating and power characteristics, labels of approval agencies

(U/L, PDI, ARI, NFPA, etc.) and similar essential data. Locate nameplates in an

accessible location.

19. Deliver products to project properly identified with names, mode numbers, types,

grades, compliance labels, and similar information needed for distinct

identifications; adequately packaged and protected to prevent damage during

shipments storage, and handling.

20.

Store equipment and materials at the site, unless off-site storage is authorised in

writing. Protect stored equipment and materials from, damage.

21. Include the following information in the product date catalogue:

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a. Description of function, normal operating characteristics and

limitations, performance curves, Architecting data and tests, and

complete nomenclature and commercial numbers of all replaceable

parts.

b. Manufacturer's printed operating procedures to include start- up,

break-in, routine and normal operating instructions; regulation,

controls stopping shut-down, and emergency instructions; and simmer

and winter operating instructions.

c. Maintenance procedures for routine preventative maintenance and

troubleshooting; disassembly, repair, and reassemble; aligning and

adjusting instructions.

d. Servicing instructions and lubrication charts and schedules.

e. Maintenance brochures shall be clearly marked to indicate the actual equipment

model numbers accessories, features, optional features, etc. furnished on this

specific project. All equipment brochures shall reference the identifying labels used

on the project drawings.

22. Provide complete warranty information for each item to include the name of the

project, the date of beginning of warranty or bond; duration of warranty or bond;

and names , addresses, and telephone numbers and procedures for filing a claim and

obtaining warranty services.

23.

24.

25.

Factory-applied finishes on equipment and apparatus installed on the project shall

be carefully protected.

At the conclusion of the works and prior to final acceptance of the project,

equipment and apparatus shall be thoroughly cleaned of all construction dirt, oil and

grease smears, temporary labels, debris, paint droppings etc.

Damaged factory finishes shall be restored to their original condition using

procedures, materials and application techniques as directed by the Architect.

SECTION 02- SPLIT SYSTEM AIR CONDITIONER UNITS

1. Submit manufacturer's technical product data, indicating full compliance with

scheduled capacities and characteristics, including specific capacities at the

scheduled entering air conditions.

2. Handle units and components carefully to prevent damage. Do not install damaged

equipment or components. Replace damaged equipment or components with new

items.

3. Store equipment and components in a clean, dry place, off the ground, and protect

from weather, water, and physical damage.

4. Install equipment and components to comply with the manufacturer’s written

installation instructions for unloading such equipment, moving it to the proper

location and making the final installation.

5. Provide units having sizes, and in locations indicated, and of capacities, style, and

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having accessories as scheduled.

6. Indoor unit features :

a. The cabinet is made of repainted sheet metal

b. Double - inlet centrifugal fans with forward curved blades, statically and

dynamically balanced, and factory-set for nominal airflow . The fans are driven by

three-phase motors with adjustable belt-pulley transmission .

c. Washable air filters.

7. Outdoor unit features:

a. The cabinet is made of repainted sheet metal , specially , specially suitable for use

outdoor.

b. Single-phase axial fans for quiet operation with generous service space. Motors

have internal thermal protection.

c. Refrigerant -to-air heat exchangers are manufactured from high quality copper

tubing , mechanically expanded into pre-treated aluminium fins and offer high

corrosion resistance.

d. Hermetic reciprocation compressors are mounted on shock absorbers for vibration

-free operation, and include internal mufflers and thermal protection

8. control system :

Electronic, with digital display touch panel wall mounted control . includes: 3 min

compressor start delay, cooling and heating freeze protection, fan stop on heating

mode, three speeds indoor fan +auto , three operating modes - cooling , heating ,

ventilation + auto. on/off timer, fault alarm.

9. Examine areas and conditions under which units are to be installed. Do not proceed

with work until unsatisfactory conditions have been corrected in manner acceptable

to Installer.

10. Install units as indicated, and in accordance with manufacturer's installation

instructions.

11. Install piping as indicated.

12. Protect units with protective covers during balance of construction,

13. Verify that electrical wiring installation is in accordance with manufacturer’s

submittal . Do not proceed with equipment start-up until wiring installation is

acceptable to equipment installer.

SECTION 03 - POWER VENTILATORS

1. Submit manufacturers technical data for power ventilators including specifications,

capacity ratings, dimensions, weights, materials, accessories furnished, and

installation instructions.

2. Except as otherwise indicated, provide standard prefabricated power ventilator

units of type and size indicated, modified as necessary to comply with requirements,

and as required for complete installation.

3.

4.

Centrifugal fan, direct or belt driven as scheduled Provide aluminium weatherproof

housings . Provide permanent split capacitor type motor for direct driven fans (1

pH); capacitor start, induction run type motor for belt driven fans (3pH).

Housing Design: Hooded dome type.

5.

Provide factory wired non-fusible type disconnect switch at motor in fan housing.

Provide thermal overload protection in fan motor. Provide conduit chase within unit

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6.

for electrical connection. Provide ventilated motor compartment.

Bird Screens: Provide removable bird screens, 1/2' mesh, 16 ga aluminium or brass

wire.

7. Axial Wall Ventilators: Provide axial glass mounted type power ventilators of type,

size, and capacity as scheduled, and as specified herein.

8.

9.

10.

11.

Axial fan, direct or belt driven as scheduled. Provide spun aluminium weatherproof

housing . Provide permanent split capacitor type motor for direct driven fans,

capacitor start, induction run type motor for belt driven fans.

Provide factory wired non-fusible type disconnect switch at motor in fan housing.

Provide thermal overload protection in fan motor. Provide conduit chase within unit

for electrical connection.

Bird Screens: Provide removable bird screens 1/2” mesh, 16 ga aluminium or brass

wire.

Dampers: Provide automatic louvered damper .

12. Except as otherwise indicated or specified, instant ventilators in accordance with

manufacturer's installation instructions and recognised industry practices to insure

that ventilators serve their intended function.

13. Co-ordinate ventilator work with work of roofing, and glazing necessary for proper

interfacing.

14. Solder bottom Joints and up 2” of side Joints of duct under roof ventilator to retain

any moisture entering ventilator.

15. Verify that electrical wiring installation is in accordance with manufacturer's

submittal . Verify proper rotation direction of fan wheels. Do not proceed with

equipment start up until wiring installation is acceptable to equipment installer.

16. Remove shipping bolts and temporary supports within ventilators. Adjust

dampers for free operation.

17. Testing: After installation of ventilators has been completed, test each ventilator to

demonstrate proper operation of units at performance requirements specified. When

possible, field correct malfunctioning units, then retest to demonstrate compliance.

Replace units which cannot be satisfactorily corrected.

SECTION 04 - METAL DUCTWORK

1. Comply with ASHRAE’s "HVAC Duct Construction Standards, First Edition,

1985, for fabrication and installation of metal ductwork,

2. Submit scaled layout drawings of metal ductwork and fittings including, but not

limited to, duct sizes, locations, elevations, and slopes of horizontal runs, wall and

floor penetrations, and connections, Show interface and spatial relationship between

ductwork and proximate equipment. Show modifications of indicated requirements

made to conform to local shop practice, and how those modifications ensure that

free area, materials, and rigidity are reduced.

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3. Protection: Protect shop fabricated and factory fabricated ductwork, accessories and

purchased products from damage during shipping, storage and handling. Prevent end

damage and prevent dirt and moisture from entering ducts and fittings.

4. Storage: Where possible, store ductwork inside and protect from weather. Where

necessary to store outside, store above grade and enclose with waterproof wrapping.

5. Sheet Metal: Except as otherwise indicated, fabricate ductwork from galvanized

sheet steel complying with ASTM A 527, lock forming quality; with G 90 zinc

coating in accordance with ASTM A 525 .

6. General: Provide miscellaneous materials and products of types and sizes indicated

and, where not otherwise indicated, provide type and size required to comply with

ductwork system requirements including proper connection of ductwork and

equipment.

7. Fittings: Provide radius type fittings fabricated of multiple sections with maximum

15 change of direction per section. Unless specifically detailed otherwise, use 45

laterals and 45 elbows for branch takeoff connections. Where 90 branches are

indicated, provide conical type tees.

8. Duct Sealant Non-hardening, non-migrating mastic or liquid elastic sealant of type

applicable for fabrication/installation detail as compounded and recommended by

manufacturer specifically for sealing joints and seams in ductwork.

9. Ductwork Support Materials:

a. Except as otherwise indicated, provide hot-dipped galvanized steel

fasteners, anchors, rods, straps, trim and angles for support of ductwork.

b. Comply with applicable provisions of ASHRAE Standards.

10. Shop-fabricate ductwork in 4, 8, 10 or 12 ft lengths, unless otherwise indicated or

required to complete runs. Pre-assemble work in shop to greatest extent possible, so

as to minimize field assembly of systems Disassemble systems only to extent

necessary for shipping and handling Hatch mark sections for reassembly and co-

ordinated installation.

11. Shop-fabricate ductwork reinforcement complying with ASHRAE Standards.

12. Fabricate duct fittings to match adjoining ducts, and to comply with duct

requirements as applicable to fittings. Except as otherwise indicated, fabricate

elbows with centre line radius equal to 1.25 duct width; and fabricate to include

turning vanes in elbows where shorter radius is necessary. Limit angular tapers to

30 for contracting tapers and 20 for expanding tapers.

13. Fabricate ductwork with accessories installed during fabrication to the greatest

extent possible.

14. Furnish and install acoustical duct lining on all duct work runs .

15.

Where liner is used, external duct insulation may be omitted.

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16. Liner shall be installed in strict compliance with manufacturer’s recommendations.

17. Examine areas and conditions under which metal ductwork is to be installed. Do

not proceed with work until unsatisfactory conditions have been corrected in manner

acceptable to Installer.

18. Install each run with minimum number of joints. Align ductwork accurately at

connections within 1/8” misalignment tolerance and with internal surfaces smooth.

Support ducts rigidly with suitable ties, braces, hangers and anchors of type which

will hold ducts true to shape and to prevent buckling. Support vertical ducts at

every floor.

19. Complete fabrication of work at project as necessary to match shop fabricated

work and accommodate installation requirements.

20. Locate ductwork runs, except as otherwise indicated, vertically and horizontally and

avoid diagonal runs wherever possible. Locate runs as indicated by diagrams,

details and notations or, if not otherwise indicated, run ductwork in shortest route

which does not obstruct useable space or block access for servicing building and its

equipment. Hold ducts close to walls, overhead construction, columns, and other

structural and permanent enclosure elements of building. Limit clearance to 1/2"

where furring is shown for enclosure or concealment of ducts, but allow for

insulation thickness, if any. Where possible, locate insulated ductwork for 1”

clearance outside of insulation. Do not encase horizontal runs in solid partitions,

except as specifically shown. Co-ordinate layout with suspended ceiling and

lighting layouts and similar finished work.

21. Where ducts pass through interior partitions and exterior walls, and are exposed to

view, conceal space between construction opening and duct or duct insulation with

sheet metal flanges of same gauge as duct. Overlap opening on 4 sides by at least

1/2”. Fasten to duct and substrate.

22. Install metal ductwork in accordance with ASHRAE Duct Construction Standards.

23. Connect metal ductwork to equipment as indicated, provide flexible connection for

each ductwork connection to equipment mounted on or hung by vibration isolators,

and/or equipment containing rotating machinery. Provide access doors as indicated.

24. Clean ductwork internally, unit by unit as it is installed, of dust and debris. Clean

external surfaces of foreign substances which might cause corrosive deterioration of

metal or where ductwork is to be painted, might interfere with painting or cause

paint deterioration.

25. Temporary Closure: At ends of ducts which are not connected to equipment or air

distribution devices at time of ductwork installation, provide temporary closure of

polyethylene film or other covering which will prevent entrance of dust and debris

until time connections are be completed.

26. Seal any leaks in ductwork that become apparent in balancing process .

27. Provide flexible duct connections wherever ductwork connected

to vibration isolated equipment. Construct flexible connections of neoprene coated

flameproof fabric crimped into duct flanges for attachment to duct and equipment.

Make airtight joint. Provide adequate joint flexibility to allow for thermal, axial,

transverse, and torsional movement, and also capable of absorbing vibrations of

connected equipment.

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SECTION 05 AIR OUTLETS AND INLETS

1. Submit manufacturer’s technical product data for air outlets and inlets including

the following:

A . Schedule of air outlets and outlet indicating drawing designation, room

location, number furnished, model number, size, and accessories furnished.

B . Data sheet for each type of air indicating construction, finish, and mounting

details.

C . Performance data for each type of air outlet and inlet furnished, including

aspiration ability, temperature and velocity traverses, and drop and noise criteria

ratings. Indicate selections on data.

2. Deliver air outlets and inlets wrapped in factory-fabricated fibber-board type

containers. Identify on outside of container type of outlet or inlet and location to be

installed. Avoid crushing or bending and prevent dirt and debris from entering and

settling in devices

3. Store air outlets and inlets in original cartons and protect from weather and

construction work traffic. Where possible, store indoors; when necessary to store

outdoors, store above grade and enclose with waterproof wrapping.

4. Except as otherwise indicated, provide manufacturer's standard ceiling air diffusers

where shown; of size, shape, capacity and type indicated; constructed of , extruded

aluminium continues slots and as required for complete installation.

5. Performance: Provide ceiling air diffusers that have, as minimum temperature and

velocity traverses, throw and drop, and noise criteria ratings for each size device as

listed in manufacturers current data.

6. Ceiling Compatibility: Provide diffusers with border styles that are compatible with

adjacent ceiling systems, and that are specifically manufactured to fit into ceiling

module with accurate fit and adequate support.

7. Diffuser Mountings:

a. Snap-In (S-I): Diffuser housing sized to fit between ceiling concealed suspension

runners, and snap into runners.

8. Diffuser Patterns:

4 ways or 2 ways, fixed louver face for 4 or 2-direction air flow.

9.

Diffuser Register :

Equalizing Deflectors (E-D): Adjustable parallel blades in frame for straightening

air flow.

10. 5. Diffuser Finishes:

Colour selection shall match architectural background; colour chips or a painted

sample device shall be submitted for approval.

11. Examine areas and conditions under which air outlets and inlets are to be installed.

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Do not proceed with work until unsatisfactory conditions have been corrected.

12. Install air outlets and inlets in accordance wit manufacturer’s written instructions

and in accordance with recognized industry practices to insure that products serve

intended functions.

13. Co-ordinate with other work, including ductwork and duct accessories, as necessary

to interface installation of air outlets and inlets with other work..

14. Unless otherwise indicated, locate units in centre of acoustical ceiling modules.

SECTION 06

SANITARY FIXTURES

1- w c , basin and sink :

Models shall be as specified in the bills of quantities, color will by chosen by the Supervisor,

cover, color the same of solid plastic open front seat with concealed check hinge.

The WC shall be installed so that the distance of the outlet from the finished wall be exactly as

listed by the manufacturer with a tolerance of + 5mm /0.0mm.

All fixtures shall be connected to drain by means of standard. rubber connectors , use of white

cement and mastics for obtaining tightness is not permitted . It is important to notice that all

brackets , hangers , supports ,bolts and other fixing materials used for fixation of sanitary

fixtures shall be of the standard types manufactured specially for the application it is intended

for and supplied or recommended by the manufacturer of the fixture himself in his catalogues .

No other locally or site made means shall by permitted.

2- Fittings for sanitary fixtures . Tap , Mixers & Valves :

All fittings shall be of the best types and models , ( Models shall be as specified in the Bills ) .

Handles shall be provided with red and blue inserts to designate hot and cold water

alternatively .

The fitting for the hand basin shall be of the combined supply and pip-up fitting with vanal-

proof aerator. Waste outlets and traps for fixtures other than WC, shall be chrome plated .

Handles for all fittings shall be of the same model. Water seals for any trap shall be more than

75 mm. All fixtures carrying fittings on their body, shall have holes to suite the fitting. This

shall be checked by the Contractor prior to place orders.

3 - PIPING:

The materials used in the various piping system, shall be as follows: -

- Galvanized steel pipe (GSP):

Schedule 40, seamless with the maker’s name stamped or rolled at each pipe length, GSP shall

be not dipped.

- Polyvinyl chlorine pipe (PVC):

Rigid unplasticised class 1, normal impact pipe, confirming to “TEKEN”.

- Copper pipe flexible pipe protected by p.v.c. sleeves by the manufacturer.

4 - WATER STORAGE TANKS:

Each water storage tank shall be made of PVC ( TEKEN ) label and shall be complete with an

overflow pipe taken to discharge in an external position approved by the Architect. The

overflow pipe shall be turned down inside the tank, terminating 2” below the water line, and

externally shall terminate 1” above drain grate.

The water feed connection to each water storage tank shall be complete gate valve , and copper

float valve.

After erection, each tank shall be thoroughly cleaned internally and painted with white Paint.

The painting shall be applied in accordance with the manufacturer’s recommendations.

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5 - ACCESSORIES:

5-1 Soap Holder

Each basin shall be complete with vitreous china soap holder.

5--2 Toilet Paper Holder

Each water closet shall be complete with vitreous china toilet paper holder.

5 - 3 Towel Hook

Each basin shall be complete with chrome plated towel hook.

It shall be fixed to the wall adjacent to basin by means of chrome-plated screws.

5 -4 Mirrors

Each basin shall be complete with a mirror.

Mirrors shall be 6mm thick beveled edges, thick silvering quality polished plate glass, with two

coats of silvering protected by electrically deposited copper baking and one coat of protective

coat. The size shall be as shown on bill of quantities.

6 - EXTERNAL , SANITRAY AND WATER SUPPLY:

6-1 General Requirements:

a ) Connections to manholes, drain inlets and catch basins shall be watertight after

installation.

b ) All piping shall conform accurately to the lines and grades shown on drawings.

c ) Any connections for existing systems shall be made with a minimum amount of

disturbance to the existing lines., without cost to the Owner.

d ) Any existing pipe lines or structures which are damaged while making connections shall

be replaced or reconstructed to the satisfaction of the project supervisor, without cost to

Owner.

e) All piping shall be examined for defects. Any defective piece discovered after

installation and test shall be removed and replaced by the Contractor at no expense to

the Owner.

f) System shall be inspected and joints approved before any backfilling is placed over

pipes.

g) All pipe and fittings shall be kept clean until final acceptance of work . The exposed

ends of all uncompleted lines shall be closed with plugs adequately secured at all times

when pipe laying is not actually in progress.

h) All piping shall be installed on a good foundation and adequate means taken to prevent

settlement.

I) The Contractor shall trim the bottom of trenches to receive the pipes and shall round

out bottoms so that the pipe will rest firmly on 20 cm undisturbed sand at proper line

and grade.

j) All piping laid in trenches shall be provided with a solid uniform bedding throughout

the entire length.

k )

Trenches shall be kept free of water by pumping, use Os well points under drains or

other approved means during pipe laying operations so that all pipe joints are made in

the dry .

Precautions shall be taken to protect incomplete work from floating due to storms or

from other causes. All pipe lines or structures not stable against uplift during

constriction shall be thoroughly braced or otherwise protected.

6-2 Tests:

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a )

b)

c)

a)

If an inspection of the completed system or any part thereof shows any structures, pipes

or joints, which are defective, the defective work shall be replaced or repaired as

directed.

The Contractor shall perform at his own expense any tests or inspection required by

local authorities. The Project supervisor shall witness the tests.

All joints shall be inspected and an inspection of the line as a whole shall show pipe to

be true to line and grade.

6-3 Manholes:

Manholes shall have a minimum of 60cm inside diameter and 15 cm wall thickness .

b) Manhole walls shall be constructed of reinforced concrete . Top section must be

tapered in to suit elevation and accommodate size of manhole frame and cover

c) Manhole floor shall be of reinforced concrete and inverts shaped with cement sand

mortar to size and shape of pipe . Inverts shall have a cross section of the exact shape

of the sewers which are connected and changes in size shall . be make gradually and

evenly, unless otherwise specifically directed . Half pipe inverts may be used in straight

through manholes.

d ) During the construction of each structure , steps shall be furnished and set in place on

the inside wall beginning two feet above the bottom , and spaced approximately fifteen

inches center to center , and shall be properly embedded in the wall .

e ) All pipes or castings to be embedded in the manhole walls shall be laid around the

casting so embedded.

Spurs or stubs for branch sewers shall be built in the manholes where shown on the

drawings or otherwise required by the project Supervisor. They shall be closed with

vitrified plugs.

g) All work must be carried on in a manner to ensure watertight work , and any leaks

shall be caulked , repaired , or the entire work shall be removed and rebuilt . Attention

is particularly called to the necessity of keeping the water level below all parts of the

foundation and walls until the cement has obtained adequate set .

a )

6-4 Excavation & Backfilling Work for pipe Laying :

The laying of pipe underground shall require trimming and grading of trench bottoms

for pipe and will require backfilling with approved materials and tamping around all

pipe to center line of pipe as the pipe laying progresses to provide protection and

stabilization of piping . Pipe laying work is conducted so that trenching operations

resulting in excessive length of open trench.

b ) The Contractor shall trim the bottom of all trenches to receive pipe and shall provide

finish grade by hand methods. the bottoms of all trenches shall be rounded so that

insofar as practical at least one -third of the circumference of the pipe will rest firmly

on 20 cm undisturbed sand at proper line and grade . Bell holes where required shall be

dug to ensure pipe resting for its entire length upon the bottom of the trench. Trenches

shall not be excavated below grade by machine

c) After pipes have been tested and approved , trenches shall be backfilled with approved

materials, carefully deposited in layers not to exceed 15 cm in thickness on both sides

and thoroughly and carefully tamped . Backfilling and tamping in layers of 15am in

thickness on both sides and thoroughly and carefully tamped . Backfilling and tamping

in layers of 15an shall be bank run sand . No backfill shall be placed in a manner such

as to cause injury to the pipe Where pipe crossings occur , the lower pipe shall be laid

first and the backfill thoroughly compacted to the level of the higher pipe before higher

pipe is laid . Backfill materials under such conditions shall be earth , approved gravel

or concrete as directed .

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6-5 Underground Pipe Supports

a) The Contractor shall furnish and place concrete cradle for water lines as required for

proper installation. Particular care shall be taken to prevent disturbing the line and

grade of the pipe during placing of the cradle . Flotation of pipe during placing

operations shall be particularly guarded by adequate bracing .

b)

c)

Where necessary to install piping on back fill or soft bottom , concrete piers or

concrete mats shall be provided as ordered by the project Supervisor .

Wherever trench bottoms are soft or wet from rain or where the bottom has been

undercut or where depth of trench is less than four feet deep , concrete cradle must be

provided .

6.6 Frames, Covers and Gratings

a) The Contractor shall furnish and set level, to the proper grade, a cast iron frame and

cover or frame and gratings . The concrete masonry shall be neatly and accurately

brought to the dimensions of the base of the frame. The frames shall be thoroughly

embedded in mortar.

b) All castings for frames, covers, and gratings shall be of tough gray iron . All castings

shall be made accurately to dimensions and shall be machined to provide even bearing

surfaces. Covers and gratings must fit the frames in any positions and if found to rattle

under traffic, shall be replaced. Filling to obtain tight covers will not be permitted. No

plugging, burning in or filling will be allowed. All castings shall be carefully coated

inside and out with coal tar pitch Varnish of approved quality. Manhole cover and grate

must have an approximate weight of 70kg or approved equal.

6.7 Manhole Steps

a) Manhole steps shall be furnished and placed in all structures as specified.

b) Steps shall be wrought iron.

SECTION 9- SUPPORTS AND ANCHORS

1. HORIZONTAL-PIPING RANGERS AND SUPPORTS

A. General: Except as otherwise indicated, provide factory- fabricated horizontal-piping

hangers and supports complying with MSS SP-58, of one of the following MSS

types listed, selected by Installer to suit horizontal-piping systems, in accordance

with MSS SP-69 and manufacturer's published product information. Use only one

type by one manufacturer for each piping service. Select size of hangers and

supports to exactly fit pipe size for bare piping, and to exactly fit around piping

insulation with saddle or shield for insulated piping. Provide copper- plated hangers

and supports for copper-piping systems

B. Adjustable Steel Clevis Hangers: MSS Type l.

C. Steel Double Bolt Pipe Clamps: MSS Type 3.

D. U-Bolts: MSS Type 24.

E. Pipe Slides and Slide Plates: MSS Type 35, including one of following plate types:

1. Plate: Unguided type.

2. VERTICAL-PIPING CLAMPS

A. General: Except as otherwise indicated, provide factory- fabricate vertical-piping

clamps complying with MSS SP- 58, of one of the following types listed, selected

by Installer to suit vertical piping systems, in accordance with MSS SP-69 and

manufacturer's published product information. Select size of vertical piping clamps

to exactly fit Pipe size of bare pipe. Provide copper-plated clamps for copper-piping

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systems.

B. TWO-Bolt Riser Clamps: MSS Type. 8.

3. HANGER-ROD ATTACHMENTS

A. General: Except as otherwise indicated, provide factory-fabricated hanger-rod

attachments complying with MSS- Sp. 58, of one of the following MSS types listed,

selected by Installer to suit horizontal piping hangers and building attachment, in

accordance with MSS SP-69 and manufacturer's published product information.

Use only one type by one manufacturer for each piping service. Select size of

hanger-rod attachments to suit hanger rods. Provide copper-plated hanger-rod

attachments for copper-piping systems.

4. CONCRETE INSERTS

A. Cast-In-Place Spot Type: Malleable iron, or steel with recommended insert nut. Size

inserts nut to suite threaded hanger rod. MSS SP-Type 18.

B. Drill-In Spot Type: Steel, attached wedge lock washer and nut. S inserts to suite

threaded hanger rod.

5. SADDLES AND SHIELDS

A. General: Except as otherwise indicated, provide saddles or shields under piping

hangers and supports, factory- fabricated, for all insulated piping. Size saddles and

shields for exact fit to mate with pipe insulation.

B. Protection Saddles: MSS Type 39; fill interior voids with segments of insulation

matching adjoining insulation.

C. Protection Shields: MSS Type 40; of length recommended by manufacturer to

prevent crushing of insulation.

6. MISCELLANEOUS MATERIALS.

A. Metal Framing: Provide products complying with NEMA STD ML 1.

B. Steel Plates, Shapes and Bars: Provide products complying with ASTM A 36w

C. Cement Grout: Portland cement (ASTM C 150, Type I or Type III) and clean

uniformly graded, natural sand (ASTM C 404, Size No. 2). Mix at a ratio of 1.0

part cement to 3,0 parts sand, by volume, with minimum amount of water required

for placement and hydration.

D. Auxiliary Steel: Fabricate from steel shapes selected for loads required; weld steel in

accordance with AWS standards.

E. Pipe Guides: Provide factory-fabricated guides, of cast semi-steel or heavy

fabricated steel, consisting has bolted two-section outer cylinder and base with two-

section guiding spider bolted tight to pipe. Size guide and spiders to clear pipe

and insulation (if any), and cylinder. Provide guides of length recommended by

manufacturer to allow indicated travel.

7 - EXECUTION

7.l INSPECTION

A. Examine areas and conditions under which supports and anchors are to be installed.

Do not proceed with work until unsatisfactory conditions have been corrected in

manner acceptable to Installer.

7.2 PREPARATION

A. Proceed with installation of hangers, supports and anchors only after required

building structural work has been completed in areas where the work is to be

installed. Correct inadequacies including (but not limited to) proper placement of

inserts, anchors and other building structural attachments.

B. Prior to installation of hangers, supports, anchors and associated work, Installer

shall meet at project site with Contractor, installer of each component of associated

work, inspection and testing agency representatives (if any), installers of other work

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requiring co-ordination with work of this section and Architect/Architect for purpose

of reviewing material selections and procedures to be followed in performing the

work in compliance with requirements specified.

7.3 INSTALLATION OF BUILDING ATTACHMENTS

A. Install building attachments at required locations within concrete or on structural

steel for proper piping support, Space attachments within maximum piping span

length indicated in MSS SP-69. Install additional at concentrated loads, including

valves, flanges, guides, strainers, expansion joints, and at changes in direction of

piping. Install,' concrete inserts before concrete is placed; fasten insert securely to

forms. Where concrete with compressive strength less than 2500 psi is indicated,

install reinforcing bars through openings at top of inserts.

7.4 INSTALLATION OF HANGERS AND SUPPORTS

A. General: Install hangers, supporter clamps and attachments to support piping

properly from building structure; comply with MSS SP-69. Arrange for grouping

of parallel runs of horizontal piping to be supported together on trapeze type hangers

where possible. Install supports with maximum spacing complying with MSS SP-

69. Where piping of various sizes is to be supported together by trapeze hangers,

space hangers for smallest pipe size or install intermediate supports for smaller

diameter pipe. Do not use wire or perforated metal to support piping, and do not

support piping from other piping, conduit, or ductwork.

B. Install hangers and supports complete with necessary inserts bolts rods, nuts,

washers and other accessories. Except as otherwise indicate for exposed continuous

pipe runs, install hangers and supports of same type and style as installed for

adjacent similar piping.

C. Support firewater piping independently of other piping.

D. Prevent electrolysis in support of copper tubing by use of hangers and supports

which are copper plated, or by other recognized industry methods.

E Insulated Piping: Comply with the following installation requirements.

1. Clamps: Attach clamps, including spacers (if any). to piping with clamps

projecting through insulation; do not exceed pipe stresses allowed by ANSI B31.

2. piping hangers shall be sized large enough to allow insulation to page through.

Hangers for piping 2-1/2” and greater shall be provided with pipe covering

protection saddle, or high compressive strength insulation saddle. Hangers for

piping 2” and less shall be provided with pipe covering shields. On cold or chilled

water piping provide vapour barrier through hanger.

8. ADJUSTING AND CLEANING

A. Hanger Adjustments: Adjust hangers so as to distribute loads equally on

attachments.

B. Support Adjustment: Provide grout under supports so as to bring piping and

equipment to proper level and elevations.

C. Cleaning: Clean factory-finished surfaces. Repair any marred or scratched surfaces

with manufacturer's touch-up paint.

SECTION 13 - MECHANICAL INSULATION

l. DELIVERYY STORAGE, AND HANDLING

A. Deliver insulation, coverings, adhesives, and coatings to site in containers with

manufacturer’s stamp or label, affixed showing fire hazard indexes of products.

B. Protect insulation against dirt, waters and chemical and mechanical damage. Do not

install damaged or wet insulation; remove from project site.

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2. ACCEPTABLE MANUFACTURERS

A. Manufacturer : Subject to compliance with requirements, provide products of one

of the following:

1. Armoflex Co.

2. Vidoflex Co.

3. Armstrong World Industries, Inc.

3. PIPING INSULATION MATERIALS

A. Piping Insulation: Blocks of tubes molded to conform to pipe , with a minimum

density of 110 Kg/m3 and a maximum K-factor of 0.04 w/m c at a mean

temperature of 24 C . The temperature range shall be 0 F to 200 F .

B. Jackets for Piping Insulation: ASTM C 921, Type I for piping with temperatures

below ambient, Type II for piping with temperatures above ambient. Type I may be

used for all piping at Installers option.

C. Encase exterior Piping and boiler room piping insulation with sheet metal Jacket

with weather-proof construction.

D. Bandage and Wires : As recommended by insulation manufacturer for applications

indicated.

E. Adhesives, Sealers, and Protective Finishes: As recommended by insulation

manufacturer for applications indicated.

4. DUCTWORK INSULATION MATERIALS

A. Rigid Fibreglass Ductwork Insulation: Duct insulation shall be flexible blanket of

fibrous glass faced on one side with fire-resistant reinforced aluminium foil having a

thickness of .025 mm bonded to flame-resistant Kraft paper . The density of the

insulation shall not be less than 24 Kg/m3 and a maximum K-factor of .04 w/m C at

24 C mean temperature .

B. Duct Insulation Accessories : Provide staples , bands , wires , tape , anchors , corner

angles and similar accessories as recommended by insulation manufacturer for

applications indicated .

5. INSPECTION

A. Examine areas and conditions under which mechanical insulation is to install. Do

not proceed with work until unsatisfactory conditions have been corrected in manner

acceptable to Installer.

B. Thickness of insulation shall be as recommended by the manufacturer for the

temperatures and pipe sizes involved, and in accordance standards of T.I.M.A.

6. DEMOSTIC HOT WATER PIPING SYSTEM INSULATION

A. Use 13 mm thick insulation for domestic hot water piping .

HVAC PIPING SYSTEM INSULATION 7.

A. Insulation Omitted: Omit insulation on cold piping within unit cabinets provided

piping is located over drain pan; and on unions, flanges, flexible connections, and

expansion joints.

B. Application Requirements: Insulate the following cold HVAC piping systems:

a. HVAC water supply and return piping,

2. Insulate each piping system specified above the following type and thickness of

insulation:

a. Tube Blocks : 19 mm thick for pipe sizes up to and including 3”, 25 mm thick for

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pipe sizes over 3”.

C. Insulation of Piping Exposed to Weather and Boiler room Piping : Protect outdoor

insulation from weather by installing outdoor protective jacketing sheet metal .

8. DUCTWORK SYSTEM INSULATION

l. Application Requirements: Insulate the following cold ductwork:

a. Outdoor air intake ductwork between air entrance and fan inlet or HVAC unit

inlet.

b. HVAC supply ductwork between f an discharge, or HVAC unit discharge, and

room terminal outlet.

c. Insulate neck and belle of supply diffusers.

d. HVAC returns ductwork between room terminal inlet and return fan inlet, or

HVAC unit inlet; except omit insulation on ductwork located in return air ceiling

plenums.

e. HVAC plenums and unit housings not pre-insulated at factory or lined.

2. Insulate each ductwork system specified above with one of the following types

and thickness of insulation:

a. Rigid Fibreglass: 1’’ thick, increase thickness to 2” in machine, fan and

equipment rooms.

9. INSTALLATION OF PIPING INSULATION

A. General: Install insulation products in accordance with manufacturer’s written

instructions, and in accordance with recognized industry practices to ensure that

insulation serves its intended purpose.

B. Install insulation on pipe systems subsequent to installation of heat tracing paintings

testing, and acceptance of tests.

C. Install insulation materials with smooth and even surfaces. Insulate each continuous

run of piping with full length units of insulation, with single cut piece to complete

run. Do not use cut pieces or scrape abutting each other.

D. Clean and dry pipe surf aces prior to insulating. Put insulation joints firmly together

to ensure complete and tight fit over surfaces to be override.

E. Maintain integrity of vapour-barrier jackets on pipe insulation, and protect to

prevent puncture or other damage.

F. Cover valves, fittings and similar items in each piping system with equivalent

thickness and composition of insulation as applied to adjoining pipe run. Install

factory molded, pre-cut or job fabricated units (at Installer's option) except where

specific form or type is indicated.

G. Extend piping insulation without interruption through walls, floors and similar

piping penetrations, except where otherwise indicated.

H. Insulation at strainers shall be neatly terminated at the basket removal flange.

10. INSTALLATION OF DUCTWORK INSULATION

A. General: Install insulation products in accordance with manufacturer' a written

instructions, and in accordance with recognized industry practices to ensure that

insulation serves its intended purpose.

B. Install insulation materials with smooth and even surfaces.

C. Clean and dry ductwork prior to insulating. Butt insulation joints firmly together to

ensure complete and tight fit aver surfaces to be covered.

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D. Maintain integrity of vapour-barrier on ductwork insulation, and protect it to

prevent puncture and other damage.

E. Extend ductwork insulation without interruption through walls, floors and similar

ductwork penetrations, except where otherwise indicated.

F. Corner Angles: Except for oven and hood exhaust duct insulation, install corner

angles on external corners of insulation on ductwork in exposed finished spaces

before covering with jacketing.

11. INSTALLATION OF EQUIPMENT INSULATION

A. General: Install equipment thermal insulation products in accordance with

manufacturer’s written instructions, and in compliance with recognized industry

practices to ensure that insulation serves intended purpose.

B. Install insulation materials with smooth and even surfaces and on clean and dry

surfaces. Redo poorly fitted joints. Do not use mastic or joint sealer as filler for

gapping joints and excessive voids resulting from poor workmanship.

C. Maintain integrity of vapour-barrier on equipment insulation and protect it to

prevent puncture and other damage.

D. Do not apply insulation to equipment, breaching, or stacks while hot.

E. Apply insulation using staggered joint method for both single and double layer

construction, where feasible. Apply each layer of insulation separately.

F. Coat insulated surfaces with layer of insulating cement, trawled in workmanlike

manner, leaving smooth continuous surface. Fill in scored block, seams, chipped

edges and depressions, and cover over wire netting and joints with cement of

sufficient thickness to remove surface irregularities.

G. Cover insulated surfaces with all-service jacketing neatly fitted and firmly secured.

Lap seams at least 2". Apply over vapour barrier where applicable.

H. Do not insulate boiler manholes, handholds, cleanouts, ASME stamps, and

manufacturer's nameplate. Provide neatly bevelled edge at interruption of

insulation.

I. Provide removable insulation sections to cover parts of equipment, which must be

opened periodically for maintenance; include metal vessel covers, fasteners, flanges,

frames and accessories.

12. INSULATION EXPOSED TO WEATHER

A Protect outdoor insulation from weather by installation of weather-barrier metal

jacketing. Metal jacketing shall be sheet metal . It may be factory-applied or field

applied. Joints shall be overlapped a minimum of 2 inches. Securement shall be

accomplished by using screws, rivets or stainless steel bands. Any vapour-barrier

jacket or coating under the metal jacketing shall not be disturbed or punctured by the

use of screws or rivets on the outer jacket.

SECTION 16- CIRCULATING PUMPS

PART 1 - GENERAL

1.1 SUMMERY

A. Extent of HVAC pumps work required by this section is indicated on drawings and

bill of quantities , and by requirements of this section.

B. Types of pumps specified in this section include the following:

l. Frame-mounted end auction.

L.2 QUALITY ASSURANCE

A. Manufacturer’s Qualifications: Firms regularly engaged in manufacture of general-

use centrifugal pumps with characteristics, sizes and capacities required, whose

products have been in satisfactory use in similar service for not less than 10 years.

B. Codes and Standards:

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l. HI Compliance: Install HVAC pumps in accordance with HI "Hydraulic Institute

Standards".

2. UL Compliance: Install HVAC pumps in accordance with UL 778 "Motor

Operated Water Pumps”..

3. UL and NEMA Compliance: Provide electric motors and components which

are listed and labelled by Underwriters Laboratories and comply with NEMA

standards.

1.3 SUBMITTALS

A. Product Data: Submit manufacturer’s pump specifications, installation and start-up

instructions, and current accurate pump characteristic performance curves with

selection points clearly indicated.

B. Shop Drawings: Submit manufacturer’s assembly-type shop drawings indicating

dimensions, weight loading, required clearances, and methods of assembly of

components.

C. Wiring Diagrams: Submit manufacturer’s electrical requirements for power supply

wiring to HVAC pumps. Submit manufacturer's ladder-type wiring diagrams for

interlock and control wiring. Clearly differentiate between portions of wiring that

are factory-installed and portions to be field-installed.

D. Maintenance Data: Submit maintenance data and parts lists for each type of pump,

controls and accessory; including "trouble shooting' maintenance guide. Include this

data, product data, shop drawings, and, wiring diagrams in maintenance manual; in

accordance with requirements of Division 1.

l.4 PRODUCT DELIVERY, STORAGE, AND HANDLING

A. Handle HVAC pumps and components carefully to prevent damage, breaking

denting and scoring. Do not install damaged HVAC pumps or components ; replace

with new.

B. Store HVAC pumps and components in clean dry place. Protect from weather, dirt,

fumes, water, construction debris, and physical damage.

PART 2 - PRODUCTS

2.1 PUMPS

A. General: Provide factory-tested pumps, thoroughly cleaned, and painted with one

coat of machinery enamel prior to shipment, Type, size, and capacity of each pump

is listed in pump schedule. Provide pumps of same type by same manufacturer.

2.2 FRAME-MOUNTED END SUCTION PUMPS

A. General: Provide frame-mounted end auction pumps where indicated, and of

capacities and having characteristics as scheduled.

B. Type: Horizontal mount, single stage, vertical split case, flexible coupling, base

mounted, designed for 175 psi working pressure,

C. Casing: Cast iron, 125 psi ANSI flanges, and tapings for gauge and drain

connections.

D. Shaft: Steel with replaceable shaft sleeve.

E. Bearings: Regreasable ball bearings.

F. Seal: Mechanical, with carbon seal ring and ceramic seat.

G. Motor: Open, drip-proof, regreasable ball bearings.

H. Impeller: Enclosed type, hydraulically and dynamically balanced, keyed to shaft and

secured with locking screw.

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I. Base plate: Structural steel with welded cross members and open grouting area .

J. Drip Lip Base: Provide a drip lip base for chilled water pumps. The drip lip shall be

constructed of minimum 10 gauge steel and shall extend a minimum 2-inches beyond

the companion flange to the pump flange.

K. Coupling: Flexible, capable of absorbing torsional vibration, equipped with coupling

guard.

L. Manufacturer: Subject to compliance with requirements, provide frame mounted end

suction pumps of one of the following:

1. Armstrong Co .

2. Salmson

PART 3 - EXECUTION

3.1 INSPECTION

A. Examine areas and conditions under which HVAC pumps are to be installed. Do

not proceed with work until unsatisfactory conditions have been corrected.

3.2 INSTALLATION OF PUMPS

A. General: Install HVAC pumps where indicated, in accordance with manufacturer's

published installation instructions, complying with recognized industry practices to

ensure that HVAC pumps comply with requirements and serve intended purposes.

B. Access: Provide access space around HVAC pumps for service as indicated, but in

no case less than that recommended by manufacturer.

C. Electrical Wiring: Install electrical devices furnished by manufacturer but not

specified to be factory-mounted. Furnish copy of manufacturer's wiring diagram

submittal to Electrical Installer.

1. Verify that electrical wiring installation is in accordance with manufacturer's

submittal and installation requirements of Electrical specifications sections. Do not

proceed with equipment start-up until wiring installation is acceptable to equipment

installer.

D. Piping Connections: Refer to Mechanical Specifications HAVC piping sections,

Provide, piping, valves, accessories, gauges, supports, and flexible connection as

indicated .

3.3 ADJUSTING AND CLEANING

A. Alignment: Check alignment, and where necessary, realign shafts of motors and

pumps within recommended tolerances by manufacturer, and in presence of

manufacturer’s service representative.

B. Start - Up: Lubricate Pumps before start-up . Start-up in accordance with

manufacturer’s instructions.

C. Refer to section "Testing, Adjusting and Balancing" for system balancing; not work

of this section.

D. Cleaning: Clean factory-finished surfaces. Repair any marred or scratched surfaces

with manufacturer’s touch-up paint.

DUCTWORK ACCESSORIES -SECTION 18

1. DAMPERS.

A. Low Pressure Manual Dampers: Provide dampers of single blade type or multiblade

type, constructed in accordance with ASHRAE Duct Construction Standards.

2. TURNING VANES

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A. Fabricated Turning Vanes: Provide fabricated turning vanes and vane runners,

constructed in accordance with ASHRAE “HVAC Duct Construction Standards".

B. Manufactured Turning Vanes: Provide turning vanes constructed of 1 1/2”, wide

curved blades set at 3/4" o/c., supported with bare perpendicular to blades set at 2”

o/c., and set into side strips suitable for mounting in ductwork.

C. Acoustic Turning Vanes: Provide acoustic turning vanes constructed of airfoil

shaped aluminium extrusions with perforated faces and fibreglass fill.

3. DUCT HARDWARE

A. General: Provide duct hardware, manufactured by one manufacturer for all items on

projects for the following:

1. Test Holes: Provide in ductwork at fan inlet and outlet, and

elsewhere as indicated, duct test holes consisting of slot and

covers for instrument tests.

2. Quadrant Locks: Provide for each dampers quadrant lock device on one end of

shaft; and end bearing plate on other end for damper lengths over 12”. Provide

extended quadrant locks and end extended bearing plates for externally insulated

ductwork.

4. DUCT ACCESS DOORS

A. General: Provide where indicated , duct access doors of size indicated.

B. Construction: Construct of same or greater gauge as ductwork served, provide

insulated doors for insulated ductwork. Provide flush frames for insinuated

ductwork, extended frames for externally insulated duct. Provide one size hinged,

other side with one handle-type latch for doors 12” high and smaller, 2 handle-type

latches for larger doors.

5. FLEXIBLE CONNECTIONS

A. General: Provide flexible duct connections wherever ductwork connected

to vibration isolated equipment. Construct flexible connections of neoprene coated

flameproof fabric crimped into duct flanges for attachment to duct and equipment.

Make airtight joint. Provide adequate joint flexibility to allow for thermal, axial,

transverse, and torsional movement, and also capable of absorbing vibrations of

connected equipment.

6. INSPECTION

A. Examine areas and conditions under which ductwork accessories will be installed.

Do not proceed with work until unsatisfactory conditions have been corrected in

manner acceptable to Installer.

7. INSTALLATION OF DUCTWORIK ACCESSORIES

A. Install ductwork accessories in accordance with manufacturer's installation

instructions, with applicable portions of details of construction as shown in

ASHRAE standards, and in accordance with recognized industry practices to ensure

that products serve intended function.

B. Install turning vanes in square or rectangular 90 elbows in supply and exhaust air

systems, and elsewhere as indicated.

C. Install access doors to open against system air pressure, with latches operable from

either side, except outside only where duct is too small for person to enter.

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D. Co-ordinate with other work, including ductwork, as necessary to interface

installation of ductwork accessories properly with other work.

8. FIELD QUALITY CONTROL

A. Operate installed ductwork accessories to demonstrate compliance with

requirements. Test for air leakage while system is operating. Repair or replace

faulty accessories, as required to obtain proper operation and leak proof

performance.

9. ADJUSTING AND CLEANING

A. Adjusting: Adjust ductwork accessories for proper setting, install fusible links in fire

dampers and adjust for proper action.

1. Label access doors in accordance with Mechanical specifications section

“Mechanical Identification".

2. Final positioning of manual dampers is specified in Mechanical specifications

section "Testing, Adjusting, and Balancing'.

B. Cleaning: Clean factory-finished surfaces. Repair any marred or scratched

surfaces with manufacturer's touch-up paint.

SECTION 20 - TESTING, ADJUSTING AND BALANCING

1. Verify the following the conditions before proceeding with any test operations

A. Installation of the designated system is complete and in full operation.

B. Outside temperature conditions, occupant loads, lighting loads special equipment

requiring extra sensible or ventilation requirements, and solar conditions are within a

reasonable range relative to design conditions.

2. Calibration and maintenance of instruments shall be in accordance with

manufacturer’s recommendations .

3. Check these items:

A. Filters are clean .

B. Filters leadage.

C. Damper operation and leakage.

D. Duct leadage.

E. Fan rotation.

F. Equipment vibration.

4.

5.

6.

Adjust dampers, diffusers, registers and grills for the delivery and distribution of

air quantities indicated on the drawings. Mark balancing device at final setting.

Adjust exhaust and re-circulation air systems for air quantities indicated on

drawings and the proper relationship between supply and exhaust established.

Adjust distribution system to obtain uniform space temperature free from

objectionable drafts and noise within the capabilities of the system.

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7. Acceptance : Final acceptance of the project will not be made until satisfactory

report is received . Owner reserves the right to spot check the report by field

verification prior to final acceptance.

9 - TESTING

The whole of the water and discharge installations shall be tested to the satisfaction of the

Architect and the Local Authority.

The Contractor shall provide all necessary testing apparatus and facilities for testing the

installations and any defective work shall be replaced immediately and shall be the subject of

re-testing until found satisfactory.

Where pipes are to be insulated, chased into walls or otherwise concealed, the work shall be

tested prior to insulating, making good chases , etc.

All hot and cold-water installations shall, if nothing else is specified, be tested to a cold-water

pressure of 7 k/cm .2.

The test pressure shall be applied by means of a manually operated test pump; Pressure gauges

shall be recalibrated before the test.

Upon completion of all tests and necessary replacements, all domestic water shall be

disinfected. Specialist shall take samples after chlorination and obtain signed certificate from

the concerned authority.

10 - COMMISSIONING:

Before handling over, the Contractor shall confirm that the installations have been examined,

tested, ready for use, and that it will operate properly and that it can be maintained efficiently.

Before handling over, the Contractor shall demonstrate to the owner the methods of operation,

limitations, the maintenance requirements, and the safety precautions to be observed, and shall

also submit any tools for operating, cleaning, testing and maintenance of the installation. 2

copies of As -Built Drawings must be submitted - Drawing scale should be 1/50 .

SECTION 21 - CONTRACT CLOSEOUT

1. CLOSEOUT PROCEDURES:

A. Comply with procedures stated in General Conditions of the Contract for issuance of

Certificate of Substantial Completion.

B. When Contractor considers Work has reached final completion, submit written

certification that Contract Documents have been reviewed, Work has been inspected,

and that Work is complete in accordance with Contract Documents and ready for

Architect's inspection.

C. In addition to submittals required by the conditions of the Contract, provide

submittals required by Governing authorities, and submit a final statement of

accounting giving total adjusted Contract Sum, previous payments, and sum

remaining due.

D. Architect will issue a final Change Order reflecting approved adjustments to

Contract Sum not previously made by Change Order.

2. FINAL CLEANING:

A. Execute prior to final inspection.

B. Clean interior and exterior surfaces exposed to view; remove temporary labels,

stains and foreign substances, polish transparent and glossy surfaces, vacuum

carpeted and soft surface. Clean equipment and fixtures to a sanitary condition,

clean or replace filters of mechanical equipment. Clean roofs, gutters, downspouts,

and drainage systems as applicable to project.

C. Clean project site; sweep paved areas, rake clean other surface.

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D. Remove waste and surplus materials, rubbish, and construction facilities from the

Project and from the project site.

3. PROJECT RECORD DOCUMENTS:

A. Store documents separate from those used for construction.

B. Keep documents current; do not permanently conceal any work until required

information has been recorded.

C. Recording:

1. Record information under Divisions 15 and 16 on a set of reproducible tracings.

2. Record information for all other work on a set of blue line opaque drawings and a

set of reproducible tracings.

3. Legible mark each item to record actual construction, including:

a. Measured depths of elements of foundation in relation to finish first floor datum.

b. Measured horizontal and vertical locations of underground utilities and

appurtenances, referenced to permanent surface improvements.

c. Measured locations of internal utilities and appurtenances concealed in

construction, referenced to visible and accessible features of construction.

d. Field changes of dimension and detail.

e. Changes made by modifications.

f. Details not on original Contract Drawings.

g. Reference to related shop drawings and modifications.

D. At Contract closeout, submit documents with transmittal letter containing data,

Project title, Contractor’s name and address, list of documents, and signature of

Contractor.

4. OPERATION AND MAINTENANCE DATA:

A. Provide data for:

1. Mechanical equipment and controls Mechanical Specifications.

2. Electrical equipment and controls Electrical specifications.

B. Submit three sets prior to final inspection, bound in 8-1/2 x 11 inch ties three-ring

side binders with durable plastic covers.

C. Provide a separate volume for each system, with a table of contents and index tabs

for each volume.

D. Part 1: Directory, listing names, addresses, and telephone numbers of: Architect and

Contractor.

E. Part 2: Operation and maintenance instructions arranged by system. For each

system, give names, addresses, and telephone numbers of subcontractors and

suppliers.

List:

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1. Appropriate design criteria.

2. List of equipment.

3. Parts list.

4. Operating instructions,

5. Maintenance instructions, equipment.

6. Maintenance instructions, finishes.

7. Shop drawings and product data.

8. Warranties.

5. WARRANTIES:

A. Provide duplicate, notarised copies. Execute Contractor's submittals and assemble

documents executed by subcontractors, supplies, and manufacturers. Provide table

of contents and assemble in binder with durable plastic- cover.

B. Submit material prior to final application for payment. For equipment put into use

with Owner’s permission during construction, submit within 10 days after first

operation. For items of Work delayed materially beyond Date of Substantial

Completion, provide updated submittal within 10 days after acceptance, listing date

of acceptance as start of warranty period.

SECTION 22 - METHODS OF MEASUREMENT

All unit prices in the Bills of Quantities shall include all materials and works

necessary for installation such as concrete, tiles, plastering, water proofing, bolts,

standard hangers or supports, frames, brackets, metallic bases, concrete foundation

when applicable, etc. necessary for building or installing the unit to the design or the

approved conditions, or necessary to the installation of the surrounding areas to the

initial conditions in case of restoration or repair. In addition to the above mentioned,

the unit price of the following items shall include as a minimum -whether mentioned

or not in the Bills, the following supplies and accessories and works shown besides

every item or them: -

1 - Hand basins, sinks, shower trays, bath tubes, urinals, bidets, cleaning sinks or similar

fixtures: The price shall include the unit itself, the stand if any, the waste fitting and

strainer, the chain and plug or pip-up, the vertical drain pipe in case of raised units,

and the rubber connector between the unit and the trap outlet pipe and drain pipe with

a suitable hole cover. It also includes earthing wire in case of cast iron bath tub or

shower tray to the earthing system under the electric section.

Two spare rubber connectors shall be supplied with each unit included in the same

price.

2 - W.C. and basin The price shall include the basin with the siphon or trap, the cover,

the flush cistern or flush valve, the flexible supply pipe and angle valve in case of

flush tank, all equipment of the tank, all bolts and joints and gaskets, rubber

connectors to the drain pipe, and adapters, the vertical and horizontal drain pipe and

joints and fittings to the first branchment or to 1 meter length from the trap outlet

whichever is shorter, and one spare rubber connector.

3 - Taps or mixers, for items of article 1 above: whether mentioned separately or

included in other items of the bills, the price shall include: the fixture itself, the

connection pipe to the angle valve, the angle valve (or to the stop valve) the hole

flanges or covers, joints and fittings, pip-up and waste outlet for types with integral

pop-up. In addition to that, it includes the whole components of the set for shower and

bath such as the fixed rose and the telephone shower rose.

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4 - All pipes: The price shall include the pipe runs, the fittings and components, adaptors,

flanges and counter flanges, gaskets, unions, expansion joints as needed, (and

expansion connectors as necessary for PVC pipes), coating, weather proofing and

protection when exposed to aggressive conditions, automatic air vents at all tops or

high points of water carrying pipes trapping air, and air admittance caps at tops of all

sewer or drain venting risers not penetrating through roof to the outside air.

NOTE:

Where two or more items are priced less than one item in the Bills of Quantities, the

price shall include the whole components mentioned above under every one of them.

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25. Electrical Work :

General

The mode of measurement is a combined one including the point system for final circuits

and the quantity unit (weight, length) for other parts of the work. Details are mentioned in

the following for each kind of element.

Cable Trays

Cable trays and ducts are measured per meter/length. Their price includes installation and

reinforcing hardware and supports under ceiling and above acoustic ceiling, including

their grounding.

Wires are defined and measured separately.

Cables and Conductors

Cables are measured per meter/length for all main feed lines between Main distribution

switchboard and secondary ones.

Cables for power and light circuits are considered included in the price of points and are

NOT measured separately.

The price of cables includes all fixing accessories for attachments to trays, wall etc. The

price also includes the connection of both cable ends to the switchboards and their

accessories.

Conduits

In general conduits are part of the point measurements. Conduits used for main or sub

feeder cables or for low voltage preparations other than

The mentioned in points are measured per meter/length.

Points

The price of points includes the supply and installation of wires, cables, conduits, Gewiss

junction boxes flush mount or surface mount, Gewiss boxes for outlets, all kinds of

switches and sockets

As described in B of Q as well as accessories such as galvanized clamps or cable ties,

protective ducts on the wall if needed cutting grooves 5 cm deep in existing or new walls

as well as covering them after installing the conduits with cement.

The price of power or light circuit is included in the price of light

Or socket point.

Lighting Fixtures

The price of a light fixture includes a complete unit, bulbs, reflectors starters, diffusers,

PF capacitors, ballasts, including supply and delivery to site, installation, connection,

reinforcing to concrete ceiling, cutting in gypsum boards.

The price includes all hanging hardware screws bolts terminal strips. As well as cables

between junction boxes and fixtures.

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Grounding Works.

Grounding conductors are measured per meter /length. The price includes supply,

installation, connection and fixing accessories, cable shoes.

Price for foundation grounding is measured as a complete job and includes cutting in

concrete columns welding galvanized strips connecting grounding conductors (measured

separately per meter/length).

Low voltage Work

Low voltage Boxes includes terminal connectors for telephone.

Telephone point includes conduits, cables in trays and telephone jack Gewiss type

6 pin with COMPACT type plate.

Fire alarm point includes 2X0.8 cable (red cable) 2X0.8 in conduits.

Fire Alarm siren includes 2X2X0.8 cable (red cable) in conduits.

Loudspeaker point for paging system includes conduits and 2X0.7 cable, junction

boxes and connectors.

Microphone point includes conduits and cable.

Alarm detector point includes conduits, 5 X 0.5 cable, and boxes.

Computer point includes 23 mm conduits and Cat 5 cable RJ45 connector Gewiss

type GW 20233 COMPCT plate.

General

The price of points includes labeling cables and marking the number of the circuit on all

outlets with engraved sandwich type labels in different colors

26. Glazing Work :

(A) Measurements

One) Glass and glazing work is included with the items in which the glass is fixed and

will not be measured separately .

(B) Rates

Rates for glass and glazing work shall include for :

One) Any size, shape and area,

Two) Glazing to wood or metal,

Three) Bedding edges,

Four) Labors to edges,

Five) Drilling holes and griding

27. Paintings and Decorating :

(A) Measurements

One) Painting and decorating to walls, ceilings and the like shall be measured net in

squared meters,

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Two) Painting and decorating to all other surfaces, items and things are included in

the items of surfaces, items and things, and will not be measured separately .

(B) Rates

Rates for painting and decorating work shall include for :

One) Preparation of surface including puttying, sealing and priming,

Two) Any area or width ,

Three) Any location ,

Four) Work in multicolor,

Five) Cutting in edges .

28. Asphalt Works

1st) Measurement:

1. Base course works shall be measured net in squared meter or in tons as specified in

the Bills of Quantities in case of base course works are not included in the asphalt

works.

2. Asphalt works shall be measured net in squared meter.

2nd) Rates:

Rates for base course and asphalt works shall include for:

1. Labor,

2. Supply and storage of base course materials,

3. Spreading, leveling, watering and compacting the base course to receive asphalt,

4. Supply and apply asphalt concrete,

5. Spreading by using Finisher,

6. Compacting,

7. Trimming, cutting and making good around edges, openings, corners and trenches.

29. Demolitions And Alterations :

(A) Measurements

One) Unless otherwise stated, old materials shall be understood to become the

property of the Contractor and shall be cleared away. Old materials required to

remain the property of the owner and shall be so described; setting aside and sorting

of such materials shall be given in the description .

Two) Demolishing individual structures, or part thereof, shall be given as an item,

stating the dimensions. Alternatively, demolishing all structures on site may be

given as one item .

Three) Cutting opening in existing structures and alterations to existing structures

shall be given either as an item or enumerated, stating the size of the opening and

the type and thickness of the existing structure. Making good all work damaged

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shall be understood to be included. The provision of new lintels shall be included in

the description of such work .

Four) The provision of temporary coverings to protect the existing structure or items

shall be understood to be included in the demolition and alteration items.

Five) Shoring incidental to demolitions and alterations, together with clearing away

and making good all work damaged, shall be understood to be included. Shoring,

other than that incidental to demolitions and alterations, shall be given as an item

stating the location; clearing away and making good all work damaged shall be

understood to be included .

(B) Rates

(a) Rates shall include for :

1. Labor, materials and plant,

2. Temporary propoing or shoring incidental to the Works,

3. Protection of adjacent buildings ,

4. Temporary protection of remaining finishing and structures,

5. Clearing all debris from site,

6. Making good finishes and structures disturbed,

7. Disposal of old materials by Contractor unless otherwise stated in the description.