part 1 general - taos construction...

SECTION 15010

GENERAL MECHANICAL REQUIREMENTS

PART 1 - GENERAL

1.01 SECTION INCLUDES

A. Mechanical Division Index

B. References

C- Codes and Permits

D. Operation and Maintenance Instructions

E. Record Drawings

F Qualifications

G. General Submittal Information

H. Altitude Ratings

I. Painting

J. Access Doors

K. Cooperation with other Trades

L. Piping and Ductwork Sealant through Walls

M. Protection of Materials and Equipment

N. Manufacturer's Instructions

0. Tests

P. Installation Check

Q. Operational Test

R. Interruption of Services

1.02 RELATED SECTIONS

A The requirements listed under General Conditions, SpecificConditions and Special Conditions and the GeneralRequirements are applicable to this section and allsubsequent sections of Division 15 and form a part of thecontract.

General Mechanical Requirements 15010-1

1.03 MECHANICAL DIVISION INDEX

15010 General Mechanical Requirements15250 Mechanical Systems Insulation15401 Building Water Supply System15405 Building Soil and Waste System15450 Plumbing Fixtures, Trim and Equipment15602 Building LP Gas Supply System15800 Air-Tempering System15900 Controls and Instrumentation15902 Electrical System Controls15990 Testing, Adjusting and Balancing of Mechanical

Systems1.04 Scope of Work

Heating, ventilating, and plumbing design for a buildingmechanical renovation.

1.05 REFERENCES

1. ASME - B40.1 - Gages - Pressure Indicating Dial Type -Elastic Element.

2. ASME MFC-3M - Measurement of Fluid Flow in Pipes UsingOrifice, Nozzle and Venturi.

3. ASTM D2458 - Method of Flow Measurement by The VenturiMotor Tube

4 ASTM El - Specification for ASTM Thermometers

5. ASTM E77 - Verification and Calibration of Liquid-in-GlassThermometers.

6. AWWA C700 - Cold Water Meters - Displacement Type

7 AWWA C701 - Cold Water Meters - Turbine Type for CustomerService.

B. AWWA C702 - Cold Water Meters - Compound Type.

9. AWWA C706 - Direct Reading Remote Registration System forCold Water Meters.

10. AWWA M6 - Water Meters - Selection, Installation, Testing,and Maintenance.

11. ISA RP 3.2 - Flange Mounted Sharp Edged Orifice Plates forFlow Measurement.

12. UL 393 - Indicating Pressure Gages for Fire and ProtectionServices-


13. UL 404 - Gages, Indicating Pressure, for Compressed GasService.

14i ASME B31.1 - Power Piping

15. ASME B31.2 - Fuel Gas Piping

16 ASME B31-5 - Refrigeration Piping

17. ASME B31.9 - Building Services Piping

18. ASTM F708 - Design and Installation of Rigid Pipe Hangers.

19. MSS SP58 - Pipe Hangers and Supports - Materials, Designand Manufacturer.

20- MSS SP69 - Pipe Hangers and Supports - Selection andApplication.

21. MSS SP89 - Pipe Hangers and Supports - Fabrication andInstallation Practices.

22- NFPA 13 - Installation of Sprinkler Systems.

23. NFPA 14 - Installation of Standpipe and Hose Systems

24 UL 203 - Pipe Hanger Equipment for Fire Protection Service

1-06 CODES AND PERMITS

A. The mechanical work shall be performed in strict accordancewith the applicable provisions of the InternationalBuilding Code, 2003 Edition, International Plumbing Code,2003 Edition, International Mechanical Code, 2003 Edition,as adopted and interpreted by the State of New Mexico,Village of Vaughn, and the National Fire ProtectionAssociation (NFPA) Regulations, current adopted edition,regarding fire protection, heating and ventilating and airconditioning systems and electrical systems. All materialsand labor necessary to comply with rules, regulations andordinances shall be provided- Where the drawings and/orspecifications indicate materials or construction in excessof code requirements, the drawings and/or specificationsshall govern. The Contractor shall hold and save theArchitect free and harmless from liability of any nature orkind arising from his failure to comply with codes andordinances.

B. Permits necessary for performance of the work shall besecured and paid for by the Contractor. All utilityconnections, extensions, meter pits and meter sets, andtap fees for water, sanitary sewerand natural gas shall be paid for by the Contractor,


unless otherwise specified herein.

1-07 OPERATION AND MAINTENANCE INSTRUCTIONS

A. The Contractor shall furnish the Architect completeoperating and maintenance instructions covering all unitsof mechanical equipment herein specified Furnish three[31 copies of all the literature; each shall be suitablybound in loose leaf book form.

B Operation and maintenance data: Include installationinstructions, assembly views, spare parts list, wiringdiagrams, and lubrication instructions. Include maintenanceand inspection data, instruction for filter replacement orperiodic cleaning requirements, servicing requirements,cleaning requirements, replacement part numbers andavailability, and service depot location and telephone.

C A "Lubrication Chart" framed under glass shall be providedlisting all types of oil to be used for each piece ofequipment and the recommended frequency of lubrication.This chart shall be hung on the wall of the equipment roomas directed by the Architect.

D. Complete temperature controls diagrams including operatingand maintenance manuals as required herein shall besubmitted to the Architect for review and distribution tothe Owner not less than two (2) weeks prior to the datescheduled for the Contractor to provide Operating andMaintenance Instructions to the Owner as specified herein.

E. Upon completion of all work and all tests, Contractorshall furnish the necessary skilled labor and helpers foroperating the mechanical systems and equipment for aperiod of one (1) day of eight (8) hours. During thisperiod, the Contractor shall instruct the Owner or hisrepresentative fully in the operations, adjustment andmaintenance of all equipment furnished. Contractor shallprovide at least two (2) weeks notice to the Architect inadvance of this period.

F. The O& M manuals, the Test and Balance Report and thecontrol as-builts shall be bound together along with theequipment model numbers and by the codes used on thedrawings. The name, address, and phone number of the localsupplier shall be included in the manuals

1.08 RECORD DRAWINGS

A. The Contractor shall be responsible to maintain a completeand accurate set of marked up drawings showing informationon the actual location of all mechanical work, and inparticular, where changes were made during construction


These drawings shall be transmitted to the Architect

B. See Division 1, Section for additional requirementsassociated with Project Record Drawings.

1.09 QUALIFICATIONS

A. Installer: Company specializing in performing the work inthe following respective sections with a minimum of three[3] years documented experience.

B. All welders shall be certified in accordance with the ASMEBoiler Test Code, Section IX, latest issue.

C. Manufacturer: Company specializing in manufacturing theproducts specified in the following respective sectionswith a minimum of three (3) years documented experience.

D Design applications to be under direct supervision of aProfessional Engineer experienced in type of work andlicensed at the place where the project is located

1.10 GENERAL SUBMITTAL INFORMATION

A. The Contractor shall submit to the Architect submittalbrochures of all equipment, fixtures and materials to befurnished under Division 15

See Division 1, for submission requirements.

B. The Contractor shall submit seven (7) copies of submittalbrochures for review. Brochures shall be submitted withinthirty (30) days after contract award.

C. Complete data must be furnished showing performance,quality and dimensions. No equipment or materials shall bepurchased prior to receiving written notification from theArchitect that submittals have been reviewed and markedeither "FURNISH AS SUBMITTED", "SUBMIT SPECIFIED ITEM","FURNISH AS CORRECTED"' Submittals returned marked"FURNISH AS CORRECTED" do not require re-submittal providedthat the Contractor agrees to comply with all exceptionsnoted in the submittal, and so states in a letter to theArchitect.

D. Review and Approval of Submittals: Submittals will bereviewed with reasonable promptness, but only forconformance with the design concept of the Project and withthe information indicated on the Drawings and stated in theSpecifications. Approval of a separate item as such willnot indicate approval of the assembly in which the itemfunctions. Approval of submittals shall not relieve theContractor of responsibility for any deviation from the


requirements of the Contract Documents, nor shall approval:relieve the Contractor of responsibility for the equipmentfitting within the allotted space shown on the drawingswith all clearances required for equipment operation,service and maintenance including a minimum of three (3)feet clear in front of all electrical control equipment andpanels, for errors or omissions in the submittals; or forthe accuracy of dimensions and quantities, the adequacy ofconnections, and the proper and acceptable fitting,execution, functioning and completion of the Work

E. Use of approved substitutions does not relieve theContractor from compliance with the Contract Documents.Contractor shall bear all extra expense resulting fromapproved substitutions where substitutions affect adjoiningor related work required in this Division or otherDivisions of this Specification

F. If Contractor substitutes equipment for that drawn to scaleon the drawings, he shall prepare a 1/4"=1'-0" fabricationdrawing for each equipment room where a substitution ismade, using dimensions of substituted equipment, to verifythat equipment will fit 'space with adequate clearances formaintenance. This 1/4"=1'-O" fabrication drawing shall besubmitted and approved by the Architect before constructionbegins.

G. Unauthorized Substitutions: If substitute materials,equipment or systems are installed without prior approvalor are installed in a manner which is not in conformancewith the requirements of this Specification and for whichthe Contractor has not received written approval, removalof all the unauthorized materials and installation of thoseindicated or specified shall be provided at no extra costto the Owner.

H. Expense: All costs for the preparation, correction,delivery, and return of the submittals shall be borne bythe Contractor

I. Prior Approval: If the contractor wants to substituteequipment in place of the specified equipment, hemust comply with the requirements for substitutions in theInstructions to Bidders.

PART 2 - PRODUCTS

2.01 ALTITUDE RATINGS

A Unless otherwise noted, all specified equipment capacitiesare for an altitude of 6,000 feet above sea level andadiustments to manufacturer's ratings must be madeaccordingly.


2.02 PAINTING

A. All finish painting of mechanical equipment will be underSection 09900, Painting, unless equipment is hereinafterspecified to be provided with factory applied finish coats.

B. All equipment shall be provided with factory applied primefinish, unless otherwise specified.

2.03 ACCESS DOORS

A. Furnish all access doors required for access to dampers,controls, or other items for which access is required foreither operation or servicing. All costs incurred throughfailure to perform this function as the proper sequence ofthis work dictates shall be borne by the Contractor. Thetype of access door shall be as required by the room finishschedule. Acoustical tile access doors shall be equal toKrueger Style B, Style A for acoustical plaster or Style C-CE for sidewall drywall or plaster construction-

B. Access doors shall be hot less than 24" x 24" in sizeexcept that larger panels shall be furnished whererequired, and panels in tile or other similar patternedceilings shall have dimensions corresponding to the tile orpattern module.

C. Where access doors are installed in walls required to havea specific fire rating, the access door installed shall befire rated access door with U.L. label, as manufactured byMilcor or approved equal Access door in 1-hourconstruction shall be Class C and access doors in 2-hourconstruction shall be Class B.

PART 3 - EXECUTION

3.01 COOPERATION WITH OTHER TRADES

A. The Contractor shall refer to other parts of thesespecifications covering the work of other trades which mustbe carried on in conjunction with the mechanical work sothat the construction operations can proceed without harmto the Owner from interference, delay, or absence ofcoordination. The Contractor shall be responsible for thesize and accuracy of all openings.

B. The mechanical drawings show the general arrangement of allpiping, ductwork, equipment, etc., and shall be followed asclosely as actual building construction and work of othertrades will permit. The Architectural and StructuralDrawings shall be considered as part of the work insofar asthis information furnishes the Contractor with details


relating to design and construction of the building.Architectural Drawings shall take precedence over theMechanical Drawings Because of the small scale of theMechanical Drawings, it is not possible to indicate alloffsets, fittings and accessories which may be required.The Contractor shall investigate the structural and finishconditions affecting the work and shall arrange his workaccordingly, providing such fittings, valves, andaccessories as may be required to meet such conditions.Should conditions necessitate a rearrangement of piping,such departures and the reasons therefore shall besubmitted by the Contractor to the Architect for approvalin the form of detailed drawings showing the proposedchanges. No such changes shall be made without the writtenapproval of the Architect All changes shall be marked ona set of drawings which shall subsequently be turned overto the Architect.

C. The Contractor shall verify the dimensions and conditionsgoverning his work at the building. No extra compensationshall be claimed or allowed on account of differencesbetween actual dimensions, including dimensions ofequipment, fixtures and materials furnished, and thoseindicated on the drawings. Contractor shall examineadjoining work, on which his work is dependent for perfectefficiency, and shall report any work which must becorrected. Coordination of all mechanical work within thebuilding will be the direct responsibility of theContractor Review of submittal data in accordance withparagraph "Submittals" shall in no manner relieve theContractor of responsibility for the proper installation ofthe mechanical work within the available space. No waiverof responsibility for defective work shall be claimed orallowed due to failure to report unfavorable conditionsaffecting his work. Installation of equipment and systemswithin the building space shall be carefully coordinated bythe Contractor with all building trades. Installation ofmechanical equipment within the ceiling cavity shall be inthe following order of priority:

1. Plumbing soil, waste and roof drain lines.

2. Supply, return and exhaust ductwork.

3. Lighting, bus duct and electrical cable trays.

4. Domestic hot and cold water mains.

S. Vent piping (for waste system).

6. Domestic hot and cold water branch piping.

3.02 EQUIPMENT SUPPORT


A. Contractor shall provide support for equipment to thebuilding structure. Contractor shall furnish all necessarystructures, inserts, sleeves, and hanging devices forinstallation of mechanical and plumbing equipment, ductworkand piping, etc. Contractor shall completely coordinateinstallation of such devices with all trades and Sub-Contractors. Contractor must further verify with theArchitect that the devices and supports are adequate asintended and do not overload the building's structuralcomponents in any way.

3.03 PIPING AND DUCTWORK SEALANT THROUGH WALLS

A. Sealant shall be capable of sealing pipe and duct openingsto restore fire and smoke rated walls and floors to theirrated integrity. Sealant shall be UL classified. Allpenetrations in fire and smoke rated wall or floorassemblies shall be closed with 3M, or approved equal, firebarrier penetration sealing systems, #7902/7904, CP-25caulk or 303 putty and installed in accordance withinstructions.

3.04 PROTECTION OF MATERIALS AND EQUIPMENT

A. The Contractor shall be responsible for the protection ofall work, materials and equipment furnished and installedunder this section of the specifications, whetherincorporated in the building or not.

B. The Contractor shall provide protection for all work wherenecessary and shall be responsible for all damage done toproperty, equipment and materials- Storage of materialswithin the building shall be approved by the Architectprior to such storage.

C. Pipe opening shall be closed with caps or plugs to preventlodgement of dirt or trash during the course ofinstallation. Plumbing fixtures shall not be used by theconstruction forces. At the completion of the work,fixtures, equipment and materials shall be cleaned andpolished thoroughly and delivered in a conditionsatisfactory to the Architect.

3.05 MANUFACTURER'S INSTRUCTIONS

A. All equipment shall be installed in strict accordance withrecommendations of the manufacturer If suchrecommendations conflict with plans and specifications, theContractor shall report such conflicts to the Architect whoshall make such compromises as he deems necessary anddesirable.


3.06 TESTS

A. All tests shall be conducted in the presence of theArchitect- The Contractor shall notify the Architect oneweek in advance of all tests- Contractor shall make allnecessary preliminary tests to ensure a tight system. Anyjoint found leaking under test shall be broken, cleaned,remade, and a new test applied Requirements for testingare specified under the sections covering the varioussystems. The Contractor shall furnish all necessaryequipment, materials, and labor to perform the requiredtests-

3-07 INSTALLATION CHECK

A- An experienced, competent, and authorized representative ofthe manufacturer or supplier of each item of equipmentindicated below shall visit the site of the work andinspect, check, adjust if necessary, and approve theequipment installation In each case, the equipmentsupplier's representative shall be present when theequipment is placed in operation. The equipment supplier'srepresentative shall revisit the job site as often asnecessary until all trouble is corrected and the equipmentinstallation and operation is satisfactory to theArchitect-

B. Each equipment supplier's representative shall furnish tothe Architect a written report certifying that theequipment (1) has been properly installed and lubricated;(2) is in accurate alignment; (3) is free from any unduestress imposed by connecting piping or anchor bolts; and,(4) has been operated under full load conditions and thatit has operated satisfactorily.

C. Equipment Requiring Installation Check

FurnacesExhaust FansPlumbing FixturesAir Cooled Condensers

3.02 OPERATIONAL TEST

A After completion of testing, adjusting and balancing work,see Section 15990, the Contractor shall make an operatingtest covering all equipment furnished and installed underDivision 15. This test shall cover a period of not lessthan 24 hours. The Contractor shall have all of hisequipment operating and check all equipment for


adjustments- The Contractor will instruct the Owner'soperating personnel in the operation and maintenance of thesystem following this operational test. The operationaltest shall be a demonstration of the operation of thesystems in all specified modes. Operational test shall beconducted by the Contractor with the assistance of theTesting and Balancing Sub-Contractor. Test shall beconducted in the presence of the Owner and the MechanicalEngineer.

3.09 INTERRUPTING SERVICES

A. The Contractor shall coordinate the installation of allwork within the building in order to minimize interferencewith the operation of existing mechanical, plumbing andutility systems during construction. Connections toexisting systems requiring the interruption of servicewithin the building shall be carefully coordinated withthe Owner to minimize system downtimes. Requests for theinterruption of existing services shall be submitted tothe Architect in writing a minimum of two (2) weeks beforethe scheduled date. Absolutely no interruption of theexisting services will be permitted without the writtenapproval of the Architect.

END OF SECTION


SECTION 15250

MECHANICAL SYSTEMS INSULATION

PART 1 - GENERAL

1.01 REQUIREMENTS

A. Conform with applicable provisions of the GeneralConditions, Special Conditions and General Requirements.

B See Section 15010 for general requirements.

1.02 SCOPE

A. Domestic hot water pipe including circulating hot water,domestic cold water piping shall be insulated.

1.03 TESTING

A. All piping and ductwork shall be tested and approved beforeany insulation is applied.

1.04 FITTINGS

A. All fittings except as otherwise specified, shall beinsulated with the same material and thickness as specifiedfor the pipe.

B. Unions, flanges and valves on hot water, will not requireinsulation.

PART 2 - PRODUCTS

2.01 INSULATION

A Insulation shall be as manufactured by Owens-CorningFiberglas, Gustin-Bacon, Johns-Manville, or Armstrong, orapproved equal, and shall be equal to that specified below.Insulation and all materials on the interior and exteriorsurfaces of ducts, pipes, and equipment shall have acomposite fire and smoke hazard rating not exceeding: FlameSpread - 25; Fuel Contribution - 50; Smoke Developed - 50,

as determined in accordance with ASTM Standard E-84.Linings in ducts, plenums, and equipment shall meet theErosion Test Method described in Underwriters' LaboratoryPublication No. 181. Insulation shall have a "'K"' factor of0.23 at 75 Degrees F mean temperature unless otherwiseindicated. All insulation materials used for valves andfittings shall have the same ratings as the insulation.Information must be submitted to Architect by means ofmanufacturer's literature showing that the materials conform

Mechanical Systems Insulation 15250 - l

to above specification without exception.

2.02 FITTINGS

A. Valves and fittings, where required to be insulated, shallbe covered with fitting mastic reinforced with fiberglassfitting tape and finished to a smooth surface orprefabricated or molded insulation may be used on allfittings where applicable, providing materials meetspecified fire and smoke hazard ratings.

PART 3 - EXECUTION

3.01 DOMESTIC HOT WATER PIPING

A. Domestic water piping including recirculating piping shallbe insulated with 1-inch thick Fiberglas one-piece preformedpipe insulation with all purpose (ASJ) fire retardantjacket- Fittings shall be finished with fitting masticreinforced with Fiberglas fitting tape and finished to asmooth surface- Hangers shall be installed under theinsulation.

3-02 DOMESTIC COLD WATER

A. Domestic cold water piping shall be insulated with Fiberglasone-piece preformed insulation 1/2-inch thick with Universal(ASJ) fire retardant vapor barrier jacket. Fittings shallbe finished with vapor barrier fitting mastic reinforcedwith Fiberglas fitting tape and finished to a smoothsurface. Domestic cold water pipe installed within walls orin chases where no return air is present need not beinsulated-

B. All domestic cold water piping exposed in the equipmentroom shall be insulated with 1/2-inch thick Fiberglassectional pipe insulation as specified above.

C. Pipe hangers shall be installed over insulation as requiredunder "CHILLED WATER PIPING"insulation paragraph of thesespecifications.

3.03 SUPPLY AND RETURN DUCTS

A All supply and return air ducts shall be insulated exceptpre-insulated flexible ducts, ducts with acoustical liningand fiberglass ductwork.

B. Cooling Ducts: Ducts handling cold air and ducts handlinga mixture of hot and cold air shall be insulated with 1-1/2" thick, 3/4 lb. density (R = 6-0) Johns-ManvilleMicrolite, FSK facing. The insulation shall be held inplace with spot daubing of a quick tacking rubber base

Mechanical Systems Insulation 15250 - 2

adhesive on approximately 6" centers. All end andlongitudinal joints shall be butted firmly and the vaporbarrier shall be overlapped not less than 2" and sealedcontinuously with Benjamin Foster 85-20. If staples areused, seal over staples with Childers CP-32, or approvedequal.

3.04 INSULATION AT VALVES

A. The termination of all insulation on pipes at valveconnections or unions, etc., shall be beveled and finishedsame as called for on all fittings.

3.05 APPLICATION

A. No pipe insulation shall be applied until piping has beenpressure tested and approved- No duct insulation shall beapplied until the ducts have been inspected and approved.All insulation shall be applied in strict accordance withthe manufacturer's recommendations-

3.06 VICTAULIC COUPLINGS

A- Where Victaulic type couplings or similar piping systems areused, all couplings shall be insulated in approved mannerwith insulation thickness equal to the pipingsystem. Insulation of couplings shall be as specifiedherein for fittings.

END OF SECTION

Mechanical Systems Insulation 15250 - 3

SECTION 15401

BUILDING WATER SUPPLY SYSTEM

PART 1 - GENERAL

1.01 REQUIREMENTS

A. Conform with the applicable provisions of the GeneralConditions, Special Conditions, and the GeneralRequirements.

1-02 RELATED SECTIONS

A. See Section 15010, General Mechanical Requirements.

B. See Section 15250, Mechanical Systems Insulation.

C. See Section 15405, Building Soil and Waste System.

D See Section 15450, Plumbing Fixtures, Trim and Equipment.

1.03 SCOPE

A. New fixtures to be connected to existing piping systems-.

B. Furnish and install all concrete, grout, and other requiredmaterials, to fill all blackouts and/or sleeves left openfor the Contractor's convenience, or for the installationof this work.

C. The work included in this contract consists of furnishingall labor, materials, equipment, tools and services; andincludes all costs of permits as specified in GeneralMechanical Requirements, Section 15010, and all costswhatsoever which may be required to completely install andplace in operation the systems herein described.

D. Equipment and Fixture Connections: The Contractor shall beresponsible for rough-in and connection to equipmentfurnished by the Owner, by others, or as under theEQUIPMENT Sections of this specification. This shallinclude any equipment requiring connection, to domestic hotor cold water systems, direct or indirect waste, or ventpiping as shown on the Architectural, Plumbing orMechanical Drawings. The Contractor shall coordinate hisrough-in work with the supplier of the equipment actuallybeing furnished and shall conform to the servicerequirements of the furnished equipment. All finalconnections required by such equipment shall be made andtested by the Contractor. Carefully review theArchitectural drawings for all of the equipment and fixturelocations.

Building Water Supply System 15401-1

PART 2 - PRODUCTS

2.01 PIPING

A. Domestic water system piping below grade or slab on gradeshall be Type "K" soft temper copper tubing. Type "L" softtemper tubing may be used only if specifically approved bythe Engineer and shall not be at the Contractor's option.

B. Domestic water system piping above slab on grade shall beType "L" hard drawn copper tubing.

2.02 FITTINGS

A. Fittings for copper piping below grade with brazed jointsshall be wrought copper (the same thickness as the piping)for solder joint-pressure type.

B Fittings for copper piping above grade shall be wroughtcopper or cast red brass for solder joint-pressure type.

2.03 JOINTS

A Joints for copper piping systems 1-1/2" and smaller shallbe made using 95-5 Tin-Antimony or approved lead freesolder. (No 50/SO or any lead containing solder will bepermitted on domestic water piping, hot or cold.)

sW Joints for copper piping systems 2" and larger above gradeslab and all sizes below grade slab shall be made usingSil-Fos, Easy Flow, or Phos Copper brazing rods with amelting temperature above 1000 deg F.

2.04 PROTECTION OF PIPING

A. Copper piping installed below grade or slab on grade shallbe protected against corrosion as follows.

B. One and one half inch (1-1/2") or smaller shall beinstalled in polyethylene protective conduit, or shall beprotected by a "IMCOA" watertight polyolefin 3/8" thickinsulation terminated not less than 6" above finished floorslab and a minimum 36" from the building outside wall.

C. Two inch (2") or larger shall be protected by a doublewrapping of X-Tru-Coat, or Scotch Wrap, or by a "IMCOA"watertight polyolefin 3/2" thick insulation. Terminationof coating shall be the same as described for 1-1/2" orsmall pipes.


2.05 WATER HEATING EQUIPMENT, PUMPS AND OTHER EQUIPMENT

A. Domestic water heating equipment and other equipment, arespecified in the Plumbing Fixtures, Trim and EquipmentSpecifications, Section 15450, or as shown on the drawings.

2.06 TRAP PRIMERS

A. Where required by plumbing code and/or as shown on thedrawings, all infrequently used floor drains and floorsinks connected to the sanitary sewer shall be protected bytrap primers. 3/4" copper tubes shall be run from theprimers to the traps of the floor drains or floor sinksThe trap primers shall be mounted in accessible locationsand shall be as specified in Section 15450

PART 3 - EXECUTION

3-01 INSTALLATION OF PIPING

A. All water piping shall be run free from traps and arrangedso that all parts of the system can be drained. Provideaccessible 3/4" gate valves with hose ends where requiredfor this purpose. Provide expansion loops or connectionsthroughout the system to allow for adequate horizontal andvertical expansion and contraction, and for buildingsetting at the point of water main entry into the building.All pipe size changes shall be made with reducing fittingsor bell reducers or increasers where any change in the pipesizes occur. No bushing of any nature shall be allowed inpiping-

B Care shall be taken to avoid mechanical ductwork,electrical equipment and air handling equipment aboveceiling. The Contractor shall be responsible forcoordinating routing of piping with ceiling Contractor andSheet Metal Contractor. Relocation of piping required frompoor coordination by the Contractor shall be at his ownexpense-

C. No water piping shall be located in outside walls unlessshown, and then piping is to be insulated and located asclose as possible to inside of wall cavity with additionalinsulation between piping and exterior of wall.

D. Written prior approval required for all proposedsubstitutions of equipment and materials, 10 days prior tobid date of project.

E All piping (hot water, hot water re-circulating and coldwater) within the building, including mechanical equipment


rooms, shall be insulated

Note: Fixture branches inside of the walls may beinstalled without insulation - both hot and cold water.

F. All piping shall be concealed where possible.All exposedpiping where concealment is not possible, or in equipmentroom, shall be painted

G. All trenching and backfill for piping shall be theresponsibility of the Contractor.

H- Any changes to the plans shall be approved byArchitect/Engineer. Contractor shall submit in writing anyproposed changes for approval and receive approval prior tomaking such changes

I. Connect each hot water re-circulation riser to hot waterriser before take-off for last fixture.

J Contractor shall balance hot water systems.

K. All pipe through footings below floor slab shall have castiron soil pipe sleeve (minimum two pipe sizes larger) whichextends full width of footings.

L. No existing water lines located below the floor slab shallbe reused as part of new system, unless specifically notedand permitted on drawings

M. All pressure and temperature relief valves shall haveadjacent unions and shall be piped separately to nearestfloor drain or outside

N. Reduced pressure backflow preventers for mechanical make-upwater shall be installed max 5'-0" above finished floor.

3 -02 VALVE CONTROL

A. Control valves shall be installed where shown on the plansand/or as directed, wherever necessary for controlling theseveral sections of the domestic water system. All valvesshall have adjacent unions (except on copper piping.)Valves shall be provided on all inlet connections to allkinds of apparatus, all risers and all groups of fixtures.Groups of fixtures shall be arranged to have their groupvalves in one location. Access shall be provided to allconcealed valves by means of access doors furnished by theContractor and installed by the Contractor. The Contractorshall coordinate the location of valves with architecturalfeatures of the building in order that the access doorswill be located symmetrically with the other features.


B. The hot and cold water supply lines to each and everyfixture specified on the drawings shall be equipped withapproved stop valves, which shall be chromium-plated whereexposed chrome-plated pipe is used. (See Plumbing Fixtures,Trim and Equipment Specifications, Section 15450 ordrawings.)

3.03 VALVES

A. All valves shall be designed for re-packing under pressurewhen fully opened and shall be equipped with packingsuitable for the intended service Gate valves shall beinstalled in the horizontal position, other valves in thevertical position and, whenever possible, shall be grouped.

B. Valves shall be manufactured by Jenkins, Nibco, Crane,Milwaukee, Walworth, Norris, Stockham, Kennedy,Lunkenheimer, Nordstrom, Dezurick or Grinnell and shall beof the following types (all valves of the same type shallbe of the same manufacturer).

Ball Valves:

Screwed 2-1/2" and smaller Milwaukee BA-100Solder 2" and smaller Milwaukee BA-150

Gate Valves:

Screwed 2-1/2" and smaller Milwaukee 1141 or 1151Solder 2-1/2" and smaller Milwaukee 1169Flanged 3" and larger Milwaukee F-2882 or

F-2885

Check Valves:

Screwed 2-1/2" and smaller Milwaukee 510Solder 2-1/2" and smaller Milwaukee 1510Flanged 3" and larger Milwaukee F-2974

Balancing Cocks:

Screwed Nordstrom Fig. 142 w/indicatorand indicator arc

Underground Gate Valves:

Water Service Kennedy Fig. 571A withFig. 123 box and

Pressure Reducing Valves - As specified in the PlumbingFixtures, Trim and Equipment Specifications, Section 15450


or as shown on the drawings.

Butterfly Valves:

Fall lug, cast iron body, bronze disc, corrosion resistantsteel stem, EPDM seat with phenolic hard backing, suitablefor domestic water systems. Valves are to be suitable formounting between flanges, with lugs drilled and tapped sothat pipe line can be disconnected with valve still holdingpressure. Valves 5" and smaller to have lever operatorswith seven throttling positions. Valves 6" and larger areto have worm gear and hand wheel manual operators.Butterfly valves or balancing cocks for water service 2"and larger, Milwaukee "ML" series. Butterfly valves orbalancing cocks for water service 2" and smaller, Milwaukee"Butterball" BB2-100 screwed or BB2-350 solder. Balancingcocks shall have calibrated flow set handle.

3-04 RELIEF VALVES

A. All pressure vessels shall be equipped with ASME rated andlabeled valves as manufactured by Keckley, or Bell andGossett. Size for proper flow and pressure as directed byequipment manufacturing data or by the Engineer. Extenddischarge lines to nearest floor sink, or to outside, or asdirected at the job site by the Engineer.

3.05 UNIONS AND FLANGES

A. Unions and flanges shall be installed at all pointsnecessary to permit easy removal of valves and equipmentwithout injury to other parts of the system. Unions inscrewed piping shall be Grinnell Fig. 459. Unions incopper piping shall be Grinnell Fig. 9102 in wroughtcopper, Fig. 9730 in cast brass. Fabricate flanged headersto make it possible to remove tube bundles, or similaritems, without having to disconnect any major portions ofpiping.

B. All connections between ferrous and non-ferrous piping orequipment shall be made with dielectric unions. Dielectricmaterial shall not be paper.

3.06 GAUGES AND THERMOMETERS

A. Furnish and install pressure gauges where shown on plans orare called for:Trerice Series 500, 4-1/2" dial withsnubber, needle valve gauge cock (similar to Hoke 300Series); select scale range to put normal pressure readingnear mid-scale.

B Furnish and install thermometers where called for or are


shown on the plans: Weiss "Vari-Angle," 9" case, 3-1/2"'insertion element with separable socket and well. Selecttemperature scale range to put normal reading near mid-scale (for example, 30 to 300-deg. F for domestic hotwater).

3-07 ACCESS DOORS

A. All concealed valves, controls, etc., shall be providedwith access doors. Type of doors as specified in theSpecification Section 15450.

3.08 STRAINERS

A. Strainers shall be of the "Y" pattern type unless shown orspecified otherwise. Ends shall be screwed or flanged tomatch the type of joints in the piping in which thestrainers are installed. Each strainer shall have theproper type of opening size for the flow duty, brass, ormoneal screen. Where space does not permit theinstallation of the "Y" strainer, install an equivalentbasket strainer. Strainers for screwed piping shall beSARCO Type AT for steel piping, SARCO Type D; or equivalentas manufactured by Grinnell, Crane, Keckley, Leslie orMcAlear. Install a blowoff valve and discharge piping tofloor sink at each strainer.

3.09 BACKFLOW PROTECTION

A. Protection: All plumbing fixtures, faucets with hoseconnections, and all other equipment having plumbingconnections shall have their water supplies protectedagainst back-siphonage, as shown on the drawings, or asrequired by the plumbing code or local health authorities.

B. Testing: Arrange for testing and approval of all backflowdevices as required by the UPC Section 1003, local healthauthorities and the Engineer.

3.10 TESTS

A. Tests: All water piping, hot and cold, shall be made tightunder a hydrostatic test pressure of 150 pounds per squareinch and maintained without pressure loss and visibleleakage for a minimum of four (4) hours. No caulking tojoints will be permitted. Any joint found to leak underthis test shall be broken, remade, and a new test applied.Certify to the Architect that the tests have been

completed.

3.11 INSULATION

A As an alternative to insulation specified in Section 15250,


domestic cold water or hot water piping systems maybe insulated with "IMCOA" polyolef in insulation ofequivalent fire rating and insulation valve as specified inSection 15250.

3 12 STERILIZATION

A. On the building side of the water supply piping, provide a3/4 inch connection through which chlorine shall beintroduced into the building water piping systems tosterilize those systems thoroughly.

B. After completion of testing, the entire cold and hot waterpiping systems, with attached equipment, shall bethoroughly sterilized with a solution containing not lessthan 50 parts per million of available chlorine, or calciumhypochlorite or chlorinated lime, and shall be pumped intothe system through the connection described above. Thesterilization solution shall be allowed to remain in thesystem for a period of twenty-four (24) hours during whichtime, all valves and faucets shall be opened and closedseveral times. After sterilization, the solution shall beflushed from the system with clean water until the residualchlorine content is not greater than 0.2 parts per million.

C The sterilization process shall be conducted as describedby the State of New Mexico, Department of Public Health,and upon completion of the process, the Contractor shalltest and certify the cleanliness of the water pipingsystem- The Contractor shall pay all costs and chargesincidental to this test

END OF SECTION


SECTION 15405

BUILDING SOIL AND WASTE SYSTEM

PART 1 - GENERAL

101 REQUIREMENTS

A. Conform with applicable provisions of the GeneralConditions, Special Conditions, and General Requirements.

1K02 RELATED SECTIONS


B See Section 15401, Building Water Supply System.

C. See Section 15400, Outside Utilities

C. See Section 15450, Plumbing Fixtures, Trim and Equipment.

1.03 SCOPE

A. New plumbing fixtures shall be connected to existing pipingsystems. All fixtures and drains shall be properly trappedand vented as required by the applicable plumbing code.

B. Furnish and install all concrete, grout, and other requiredmaterials to fill all blackouts and/or sleeves left openfor the Contractor's convenience, or for the installationof this work.

C. The work included in this contract consists of furnishingall labor, materials, equipment, tools and services, andincludes all costs of permits as specified in GeneralMechanical Requirements, Section 15010, and all costswhatsoever which may be required to completely install andplace in operation the systems herein described.

D. Equipment and Fixture Connections: The Contractor shall beresponsible for rough-in and connection to equipmentfurnished by the Owner, by others, or as under PlumbingFixtures, Trim and Equipment Section 15450 of thisspecifications. This shall include any equipment requiringconnection to domestic hot or cold water systems, direct orindirect waste, or vent piping as shown on theArchitectural Plumbing or Mechanical Drawings. TheContractor shall coordinate his rough-in work with theSupplier of the equipment actually being furnished andshall conform to the service requirements of the furnishedequipment. All final connections required by suchequipment shall be made and tested by the ContractorCarefully review the Architectural drawings for all of the

Building Soil and Waste System 15405-1

equipment and fixture locations.

PART 2 - PRODUCTS

2.01 PIPING

A. Sanitary Waste Piping: Conventional soil, waste, and ventpiping below slab on grade shall be schedule 40 PVC

B. Conventional soil, waste, and vent piping above slab ongrade shall be Schedule 40 PVC.

C_ Trap arms shall be galvanized Schedule 40 pipe encased inchrome-plated thin wall brass tubing, or 17 gauge chrome-plated brass tubing. If specifically required chrome-plated Schedule 40 brass pipe trap arms shall be used.

2.02 FITTINGS

A. Fittings for sanitary vent system shall be Schedule 40 PVCsolvent weld fittings.

B Tapped sanitary tees and crosses will be permitted only forfixtures connections. Crosses shall have the barrel of thefitting two pipe sizes larger than the largest branchinlet.

2.03 JOINTS

A. Joints on Schedule 40 PVC soil waste and vent system aboveslab shall comply with the applicable plumbing coderequirements to achieve rigid installation.

PART 3 - EXECUTION

3.01 INSTALLATION OF PIPING

A The Contractor shall promptly install sewer, drains, andpiping after excavating, chasing or cutting for same as hasbeen done, so as to keep the openings for such piping openas short a time as possible No piping shall, however, bepermanently closed up, furred in or covered before thetesting and examination of same by the authorities havingjurisdiction-

B. All piping shall be run in the most direct manner.Horizontal pipe shall have a grade of one-quarter (1/4)inch per foot wherever possible and not less, in any case,than one-eighth (1/8) inch per foot (1/8" per footallowable only for pipes 4" in diameter and larger). Alloffsets shall be 45-deg. F or less.


C. Cleanouts shall be provided at:

1. The bottom of each soil or waste stack;

2. On horizontal drain lines below grade longer than 5';

3. On each kitchen sink and urinal;

4. On horizontal vent lines if rising at an angle lessthan forty-five (45) degrees from the horizontal up toa point at least six inches (6") above the flood rim ofthe fixture served by the vent;

5. At each change of direction greater than ninety (90)degrees;

6. On interior horizontal runs below grade at intervalsnot exceeding 75';

7. On exterior horizontal runs at intervals not exceeding100';

and/or

8. As shown on the drawings and as required by theplumbing code in addition to these specifications.

D. Two-way cleanouts outside of the building shall beinstalled as shown on the drawings, or as a substitutionfor an upper terminal cleanout.

E All interior cleanouts shall be the same size as the pipeserved up to 4" size and 4" for all larger lines. Exteriorcleanouts shall consist of a concrete encased wye in theline with sewer piping extending upward therefrom andterminating in a concrete slab at grade. A cleanoutcasting as specified shall be set on this slab in such amanner as to be flush with the finished grade. Allexterior cleanouts shall be the same size as the sewer upto 6" size and shall be 6" for all larger lines. SeeCleanout Details and Specifications.

F. Fixture vent piping shall be kept above the fixtures insuch a manner as to preclude the use of the vents as waste,if the waste pipes later become obstructed. All vent pipesshall be properly graded without drops or sags, and soconnected as to drip back to waste pipes by gravity.Whenever practical, or as shown on the drawings, two ormore vents shall be connected together at a point not lessthan 6" above flood rim of fixtures served by the vent, andextended as one vent through the roof. Vent pipinginstalled below grade slab shall be not less than 2"diameter.


3.02 FLASHINGS

A. Flash vent piping through roof (V.T.R.) with lead flashing,weight of not less than four (4) pounds per square foot,extending at least 14" in all directions under roofing and12" up around the vent pipe. Cap flash pipe and turn downinside 1" approximately. Install all vent pipes extendingthrough roof prior to roof installation. Flashing shall betwo-piece type, base and cap flashing. Prior to theroofing installation, furnish base flashing pieces to theContractor for installation by the Contractor. TheContractor shall install cap flashing.

B. Stoneman two-piece or vinyl V.T.R. flashing is permissibleas an option to two-piece lead flashing- The vinylflashing shall be 20 mil thickness, ASTM C69-62 tearstrength, 0.14 #/ft. equal to Pasco Manufacturing Co-, 777Standford Dr., Los Angeles, California (90021). Theflashing shall be installed in accordance with themanufacturer's recommendations.

C. Floor drains and floor sinks (which are specified with aflashing clamp) and all job-site built shower pans shall beflashed with 0-40" thick non-plasticized chlorinatedpolyethylene sheet, Chloraloy 240, as manufactured by NobleCompany, or approved equal- Each floor drain and floorsink flashing shall be minimum 36" x 36" square and shallbe terminated (if applicable, in corners and against walls)not less than 6" above finish floor.

D. Lead flashing of floor drains, floor sinks and shower panswill not be permitted.

3.03 FLOOR DRAIN AND FLOOR SINKS

A. Floor drains and sinks shall be as manufactured by Smith,Wade, Josam or Zurn. Provide flashing clamp devices andflashing where required by floor construction and wherespecified.

B. See Plumbing Equipment Specifications Section 15450 ordrawings for types. All floor drains and sinks shall beinstalled with grates square with building lines.

3.04 TESTS

A. The entire sanitary waste and vent system shall be testedby filling the entire system or in sections (if required bysequence of construction), with water to provide a minimumof 10 ft. head of water on each system joint and pipe.System shall remain filled with no loss of water andvisible leakage for a minimum of four (4) hours.Preliminary testing shall be accomplished as necessary


prior to final test

B. The Contractor shall certify in writing that all tests weresatisfactorily completed before piping was concealed, andshall submit the certification to the Architect for hisrecords, and for transmittal to the Owner.

END OF SECTION


SECTION 15450

PLUMBING FIXTURES, TRIM AND EQUIPMENT

PART 1 - GENERAL

101 REQUIREMENTS

A. Conform with applicable provisions of the GeneralConditions, Supplementary Conditions and the GeneralRequirements.


A. See Section 15010, General Mechanical Requirements

B See Section 15401, Building Water Supply System.

C. See Section 15405, Building Soil and Waste System.

103 SCOPE

A Plumbing fixtures and equipment shall be supplied, set andconnected as shown on the plans, or as recommended by theequipment manufacturer. Fixtures and equipment shall beprotected from damage during construction, and shall bethoroughly cleaned of all tape, paint and adhesive prior tofinal acceptance.

B. The work included in this contract consists of furnishingall labor, materials, equipment, and tools, to completelyinstall and place in operation the fixtures and equipmentdescribed herein.

C. Equipment and Fixture Connections: The Contractor shall beresponsible for rough-in and connection to the equipmentfurnished by the Owner, by others, or as under the otherSections of this specification. This shall include anyequipment requiring connection to domestic hot or coldwater systems, direct or indirect waste, or vent piping,as shown on the Architectural, Plumbing or MechanicalDrawings. The Contractor shall coordinate his rough-inwork with the Supplier of the equipment actually beingfurnished, and shall conform to the service requirementsof furnished equipment. All final connections required bysuch equipment shall be made and tested by the Contractor.Carefully review the Architectural Drawings for equipmentand fixture locations.

PART 2 - PRODUCTS

2.01 PLUMBING FIXTURES AND EQUIPMENT

Plumbing Fixtures, Trim and Equipment 15450-1

A Plumbing fixtures, pumps, water heaters, and all otherplumbing equipment shall be as specified in this section,on the plans, or an approved equal

2.02 QUALITY ASSURANCE

A. The substitutes of the following manufacturers of fixtures,equipment and material are acceptable to bid against themanufacturers specified. Manufacturers which are not listedor specified shall apply for prior approval as specified inGeneral Mechanical Requirements Written prior approvalrequired for all proposed substitutions of equipment andmaterials, 10 days prior to bid date of project.

ITEM OF MATERIAL APPROVEDOR EQUIPMENT MANUFACTURER

Plumbing Fixtures American Standard, Eljer,

Water Heaters A. 0. Smith, Patterson-Kelly,(NOTE: For all N.M. Weben-Jarco, Lochinvar,Government funded jobs, Adamson, Teledyne Laars,all submitted units shall Aerco, Raypac, State,have minimum 80% thermal National, RUUD, Bradford-efficiency.) White, Precision, Hamilton,

Rheem.Sinks (Stainless Steel) Elkay, Just, Designer's

Choice, Metcraft

Access Panels Zurn, Williams, Brothers, Karp

Cast Iron Castings Neenah, McKinley, Vulcan,

Hydrants (Wall, Post or Zurn, Wade, Josam, J.R. SmithBox)

Hose Bibbs Woodford, Chicago Faucet, T&S

Floor Drains, Floor Sinks, Zurn, Wade, Josam, JR. SmithRoof Drains, Downspouts Ancon, Jonespec-Cleanouts, Chair Carriers,Backwater Valves, Air GapFittings, Water HammerArrestors,

Water Closet Seats Church, Beneke, Bemis, Sperzel


Flush Valves Sloan, Delany, Zurn - withdiaphragm type only

Faucets Grohe, Speakman, American(NOTE: Only ceramic cart- Standard.ridge type faucets may besubmitted as substitute tospecified- Any other systemwill not be accepted.)

Stops Grohe, Chicago Faucet, T & S,Sanitary-DashNote: All submitted stopsshall have threaded or sweatinlet connection as specified.No Stops with compressioninlet will be accepted assubstitution.

Backflow Preventers Febco, Wilkins, Orion, Watts,Beeco

Electric Water Coolers Haws, Halsey-Taylor, Oasis,Elkay, Sunrock

Mop Basin Receptors Fiat, Williams, Oberon

No-Hub Couplings Husky, Clamp-All, Anaco, TylerJonespec, MG Couplings

Domestic Water Expansion Tank Weinman WAST12-55 or approvedequal

2.03 PLUMBING FIXTURES

SEE PLUMBING DRAWINGS

2.04 PLUMBING EQUIPMENT

SEE PLUMBING DRAWINGS.

PART 3 - EXECUTION

3.01 INSTALLATION

A. Fixtures connecting fittings, piping and valves shall bebrass or copper and, whenever exposed, shall be polishedchrome-plated. Provide tight fitting wall or floorescutcheons of chrome- plated brass wherever pipes passthrough floors, wall or ceilings.

B. Equipment connecting fittings, piping and valves whenever


exposed in occupied areas, except in equipment rooms, shallbe chrome-plated. Painting may be used only if specificallyapproved by the Architect or Engineer.

C. All porcelain or vitreous china shall be clean, smooth andbright. All shall be warranted not to craze, discolor orscale.

D. The Contractor shall furnish and install all requiredwater, waste, soil and vent connections to all plumbingfixtures together with all fittings, supports, fasteningdevices, cocks, valves, traps, etc., leaving all incomplete working order.

E. Provide factory fabricated (or as specified) carriers forall wall hung fixtures

F_ All automatic or self-closing valves for faucets shall beadjusted in accordance with manufacturer's instructions andsupervised as necessary by equipment supplier'srepresentative at the request of the Architect or Engineer.

G Owner (or others) furnished equipment shall be connectedwith drains, traps, hot water, cold water and otherservices required for optimum operation. The Contractorshall obtain information from the Owner or his appointedrepresentative for services required, or field verifyspecific requirements. The Contractor shall also, prior tobidding, verify what type of connecting material and trimthe Contractor shall provide for Owner, or others,furnished equipment. Contractor shall furnish andinstall all P-traps required and it shall be hisresponsibility to furnish traps compatible with thetailpieces.

H. All fixtures shall be thoroughly cleaned to thesatisfaction of the Architect before acceptance of thework.

END OF SECTION


SECTION 15602

BUILDING L.P. GAS SUPPLY SYSTEM

PART 1 - GENERAL

1.01 REQUIREMENTS

A. Conform with applicable provisions of the GeneralConditions, the Supplementary Conditions and GeneralRequirements.



1.03 SCOPE

A. The Contractor shall furnish and install a complete L.P.gas piping system as shown on the drawings.

System shall include storage tank on site, service line upto the building and the pressure reducing equipment (orstation) with all necessary components as required by theGas Company.

B. The work included in this contract consists of furnishingall labor, materials, equipment, tools and services, andincludes all costs of permits as specified in GeneralMechanical Requirements, Section 15010, and all costswhatsoever which may be required to completely install andplace in operation the systems described herein

C. Equipment Connections: The Contractor shall beresponsible for rough-in and connection of the equipmentfurnished by the Owner, or by others, or as under theEquipment Section of this specifications. This shallinclude any equipment requiring connection to gas pipingsystems as shown on the Plumbing, Mechanical orArchitectural drawings. The Contractor shall coordinatehis rough-in work with the supplier of the equipmentactually being furnished and shall conform to the servicerequirements of the furnished equipment. All finalconnections required by such equipment shall be made andtested by the Contractor. Carefully review theArchitectural drawings for all of the equipment locations.

D. Furnish and install all concrete, grout, and other requiredmaterials to fill all blackouts and/or sleeves left openfor the Contractor's convenience, or for the installationof this work.

E. The gas system shall be installed only by a properlylicensed firm with a qualified and experienced gas piping

Building L.P. Gas Supply System 15602-1

crew.

PART 2 - PRODUCTS

2.01 PIPING

A. Piping below grade outside of the building and up to 6"above finish grade shall be Schedule 40 black steel pipe,conforming to ASTM Designation A-53 with factory (or job-site) applied protective wrapping in accordance with thestandards of the gas industry (X-Tru-Coat or Scotch Wrap).

B. Piping above grade and inside of the building shall beSchedule 40 black steel pipe, conforming to ASTMDesignation A-53.

2.02 FITTINGS

A. Below grade outside of the building in the return airspace, and 2" and larger fittings shall be Schedule 40welding type by "Tube-Turns," or an approved equal.

B. Above grade piping 1-1/2" and smaller may have screwedfittings, except in the return air space where all gaspiping shall be welded.

2.03 GAS COCKS

A. Gas cocks shall be as manufactured by Crane Co. All gascocks 2" and larger shall be lubricated type asmanufactured by Rockwell-Nordstrom.

PART 3 - EXECUTION

3.01 INSTALLATION OF PIPING

A. All piping shall be run straight without sags or traps andshall be so pitched as to drain back to the risers A droppocket consisting of a nipple and a cap shall be screwedinto the bottom of each main riser and as shown on thedrawings.

B. Installation of all gas piping in the building shall complywith the latest applicable addition of the UPC, standardsset by NFPA 54, National Fuel Gas Code, and otherapplicable standards, unless otherwise shown on thedrawings, or as specified in these specifications.

C. No gas valve shall be installed in the return air ceilingspace. Piping passing through the return air ceilingspaces shall be welded and encased in steel protectiveconduit (minimum Schedule 20 pipe), vented to the outside.The conduit shall be also welded Protective conduit maybe eliminated if specifically approved by the local

Building L-P. Gas Supply System 15602-2

governing authority and written authorization is obtainedby Contractor and submitted to the Engineer for approvalGas piping installed below sidewalks or paved areasadjacent to the building shall be installed in protectiveconduit (Schedule 40 PVC pipe) vented to the outside andterminated not less than 12" above the finished grade and5' beyond the end of the pavement or sidewalk.

D. All piping and fittings below grade and up to 6" abovegrade outside of the building structure shall be protectedagainst corrosion by a wrapping (factory or job-site)applied in accordance with the standards of the gasindustry (X-Tru-Coat or Scotch Wrap).

E. Provide expansion loops throughout the system to allow foradequate horizontal and vertical expansion and contraction.

F. Unions or companion flanges shall be provided for easyremoval of all equipment.

G. All gas lines exposed to weather (above roof, etc.) shallbe treated with two coats of asphalt paint. All exposedlines inside building' shall be painted to matchsurroundings or as directed by the Architect.

H. Welding of pipes shall comply with the Standard Practice ofthe American Welding Society using standard weldingfittings- No notching or mitering of pipe will beaccepted. Weld-o-lets may be used for the tee connectionup to one half of the line size and not to exceed 4" insize.

I. No bending of pipe will be permitted.

3.02 TESTS

A- Gas piping shall be tested with air pressure in accordancewith Section 1206 of the latest edition of the UniformPlumbing Code, or as directed by the State Inspector

END OF SECTION

Building L.P. Gas Supply System 15602-3