day2session3a regala nha standards for housing design construction

STANDARDS FOR HOUSINGSTANDARDS FOR HOUSINGDESIGNAND CONSTRUCTIONDESIGNAND CONSTRUCTIONRelevance/Applicability in View of New Normal

A presentationby Ar. Maria Benita O. Regala. fuap

Manager, Housing Technology Development Office (HTDO), NHAto the Technical Workshop on Holistic Solutions for Resilient Low-Cost Housing

at The Oracle Hotel, Quezon Cityon 03 April 2014

OUTLINE OF PRESENTATION

Standards from BP 220 Site Selection Criteria and Planning Principlesbeing applied for NHA Projects

22 m Row House Model with 11 m Loftdeveloped as a disaster-resilient housing

Standards from BP 220 Site Selection Criteria and Planning Principlesbeing applied for NHA Projects

22 m Row House Model with 11 m Loftdeveloped as a disaster-resilient housing

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BP 220 Standards

A. Site Criteria (Sec. 5, BP 220)1. Availability of Basic Needs (Water, Movement

and Circulation, Storm Drainage, Solid and LiquidWaste Disposal, Parks/Playground, Power)

2. Conformity with Zoning Ordinances/ City orMunicipality Land Use Plan

3. Physical Suitability4. Accessibility

A. Site Criteria (Sec. 5, BP 220)1. Availability of Basic Needs (Water, Movement

and Circulation, Storm Drainage, Solid and LiquidWaste Disposal, Parks/Playground, Power)

2. Conformity with Zoning Ordinances/ City orMunicipality Land Use Plan

3. Physical Suitability4. Accessibility

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BP 220 Standards

B. Planning Considerations (Sec. 5, BP 220)1. Area Planning2. Site Preservation/ Alteration

a. Slopeb. Preservation of Site Assetsc. Ground Cover

3. Easements4. Circulation

B. Planning Considerations (Sec. 5, BP 220)1. Area Planning2. Site Preservation/ Alteration

a. Slopeb. Preservation of Site Assetsc. Ground Cover

3. Easements4. Circulation

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BP 220 Standards

B. Design Parameters (Sec. 5, BP 220)1. Land Allocation2. Lot Requirement3. Length of Block4. Shelter Component5. Setback/ Yard6. Water Supply7. Electrical Power Supply

B. Design Parameters (Sec. 5, BP 220)1. Land Allocation2. Lot Requirement3. Length of Block4. Shelter Component5. Setback/ Yard6. Water Supply7. Electrical Power Supply

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8.Sewage Disposal System9. Drainage Disposal System10. Garbage Disposal System11. Firefighting

SITE SELECTION CRITERIA LOCATION

With consideration of both the regional and localcontext Housing projects shall be within suitable sites forhousing and outside potential hazard prone andprotection areas

ACCESSIBILITY FROM MAJOR TRANSPORTATIONFACILITIES Site shall have an existing legal road right of way froma major thoroughfare

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LOCATION With consideration of both the regional and localcontext Housing projects shall be within suitable sites forhousing and outside potential hazard prone andprotection areas

ACCESSIBILITY FROM MAJOR TRANSPORTATIONFACILITIES Site shall have an existing legal road right of way froma major thoroughfare

SITE SELECTION CRITERIA ZONING AND LAND USE CLASSIFICATION

Classification shall be Residential as defined underapproved CLUP

TOPOGRAPHY AND SOIL CHARACTERISTICS Must be relatively flat (or filling requirement forrolling terrain shall not exceed max cost) Slopes should not exceed 15% max gradient. For highdensity, slope should be below 5%. Soil characteristics must conform to the suitabilitystandards for construction by DENR through itsBureau of Mines and Geo-Sciences

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ZONING AND LAND USE CLASSIFICATION Classification shall be Residential as defined underapproved CLUP

TOPOGRAPHY AND SOIL CHARACTERISTICS Must be relatively flat (or filling requirement forrolling terrain shall not exceed max cost) Slopes should not exceed 15% max gradient. For highdensity, slope should be below 5%. Soil characteristics must conform to the suitabilitystandards for construction by DENR through itsBureau of Mines and Geo-Sciences

SITE SELECTION CRITERIA WATER SUPPLY FACILITIES

Source of potable water should be establishedwhether from local water company, from the ground,or other alternative source

POWER SUPPLY FACILITIES Presence of power utility company that will serve theneeds of new community

DRAINAGE Natural waterways and outfalls shall be established onground

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WATER SUPPLY FACILITIES Source of potable water should be establishedwhether from local water company, from the ground,or other alternative source

POWER SUPPLY FACILITIES Presence of power utility company that will serve theneeds of new community

DRAINAGE Natural waterways and outfalls shall be established onground

SITE PLANNING PRINCIPLES Compliance to all existing laws, rules andregulations on housing (local or national)

Adoption of the green infrastructure andpreservation of existing natural assets of the land(e.g., trees, ground cover, vegetation, naturalwaterways)

Promotion of walkable communities

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Compliance to all existing laws, rules andregulations on housing (local or national)

Adoption of the green infrastructure andpreservation of existing natural assets of the land(e.g., trees, ground cover, vegetation, naturalwaterways)

Promotion of walkable communities

SITE PLANNING PRINCIPLES Promotion of appropriate community facilitiesand infrastructure To serve the socio-economic needs and culturalactivities of the beneficiaries as well as encouragethe implementation of environmentalmanagement programs in the housing sites

NHA shall provide the minimum requirements forcommunity facilities

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Promotion of appropriate community facilitiesand infrastructure To serve the socio-economic needs and culturalactivities of the beneficiaries as well as encouragethe implementation of environmentalmanagement programs in the housing sites

NHA shall provide the minimum requirements forcommunity facilities

SITE PLANNING PRINCIPLES LAND USE ALLOCATION PER SITE

66% Saleable Residential housing development

34% Non-Saleable Circulation/ Road Network Parks and Playgrounds Community Facilities

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LAND USE ALLOCATION PER SITE66% Saleable

Residential housing development


SITE PLANNING PRINCIPLES LAND USE ALLOCATION PER SITE

66% Saleable Residential housing development


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LAND USE ALLOCATION PER SITE66% Saleable

Residential housing development


SITE PLANNING PRINCIPLES MAXIMUM ALLOWABLE DENSITY PER HECTARE

Horizontal Development 1-Storey Row House (Loftable) : 160 units/ha. 1-Storey Row House (with loft) : 160 units/ha. 2-Storey Row House : 160 units/ha.

Vertical Development (Low Rise Buildings) 2-Storey LRB : 225 units/ha. 3-Storey LRB : 245 units/ha. 4-Storey LRB : 325 units/ha. 5-Storey LRB : 405 units/ha.

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MAXIMUM ALLOWABLE DENSITY PER HECTARE Horizontal Development

1-Storey Row House (Loftable) : 160 units/ha. 1-Storey Row House (with loft) : 160 units/ha. 2-Storey Row House : 160 units/ha.

Vertical Development (Low Rise Buildings) 2-Storey LRB : 225 units/ha. 3-Storey LRB : 245 units/ha. 4-Storey LRB : 325 units/ha. 5-Storey LRB : 405 units/ha.

HOUSING UNIT DESIGN GUIDELINES MINIMUM FLOOR AREA

22.0 square meters loftable 22.0 square meters with 11 sq.m loft 24.0 square meters (for LRBs) Models for lots along major roads may be modified toinclude provision of a space for home-based economicactivity, but should not exceed cost parameters If new technology or material substitute: must havepassed AITECH (Accreditation of InnovativeTechnologies for Housing)

HIGHER THANBP 220 MINIMUMHIGHER THAN

BP 220 MINIMUM

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MINIMUM FLOOR AREA 22.0 square meters loftable 22.0 square meters with 11 sq.m loft 24.0 square meters (for LRBs) Models for lots along major roads may be modified toinclude provision of a space for home-based economicactivity, but should not exceed cost parameters If new technology or material substitute: must havepassed AITECH (Accreditation of InnovativeTechnologies for Housing)

STANDARDS FOR COMMUNITY FACILITIES Provision of community facilities shall bedetermined based on the needs of targetbeneficiaries

Based on existence of public infrastructure within the5-km radius of the site

For horizontal development: 1 covered basketball court/ multi-purpose center 1 day care center w/ 2 classrooms 1 MRF 1 tricycle terminal

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Provision of community facilities shall bedetermined based on the needs of targetbeneficiaries Based on existence of public infrastructure within the5-km radius of the site

For horizontal development: 1 covered basketball court/ multi-purpose center 1 day care center w/ 2 classrooms 1 MRF 1 tricycle terminal

OTHER FACTORS IN PROJECT PLANNINGFactors that Help Ensure Effective Project Planningand Management for Disaster Resilient Homes:

Local Inter-Agency Committeewith POs and NGOs organized atthe start of the projectLocal Inter-Agency Committeewith POs and NGOs organized atthe start of the project

A Planning Team and a ProjectManagement Composite Team wereset up by NHAA Planning Team and a ProjectManagement Composite Team wereset up by NHA

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Local Inter-Agency Committeewith POs and NGOs organized atthe start of the projectLocal Inter-Agency Committeewith POs and NGOs organized atthe start of the project

Securing of all EnvironmentalClearances and Permits prior toconstruction:*ECC from DENR*Clearance from PHIVOLCS*Devt/ Building Permit from LGUs

Securing of all EnvironmentalClearances and Permits prior toconstruction:*ECC from DENR*Clearance from PHIVOLCS*Devt/ Building Permit from LGUs

A Planning Team and a ProjectManagement Composite Team wereset up by NHA

Community Representatives weremade part of project monitoringduring and after constructionCommunity Representatives weremade part of project monitoringduring and after construction

Individual beneficiaries accepttheir housing units prior topayment to ContractorsIndividual beneficiaries accepttheir housing units prior topayment to Contractors

22 SQ. M. ROW HOUSE MODEL FOR TYPHOON22 SQ. M. ROW HOUSE MODEL FOR TYPHOONYOLANDA VICTIMSYOLANDA VICTIMS (WITH 11 SQ. M. LOFT)(WITH 11 SQ. M. LOFT)

LOT SIZE:40 sq. m.

(10.00m x 4.00m)BUILDING

FOOTPRINT:22 sq. m.

(5.50m x 4.00m)TOTAL FLOOR AREA: 33 sq. m.(GROUND FLOOR AND LOFT)

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REVISED 06 MAR 2014

LOT SIZE:40 sq. m.

(10.00m x 4.00m)BUILDING

FOOTPRINT:22 sq. m.

(5.50m x 4.00m)TOTAL FLOOR AREA: 33 sq. m.(GROUND FLOOR AND LOFT)

DISASTER RESILIENT HOUSING STRUCTURAL DESIGN STANDARDSDESIGN PARAMETER ONE-STOREY TWO- STOREY 3-STOREYS OR

MOREWIND LOAD 250 KPH 250 KPH 250 KPHSTRENGTH OF WALLANDSUPERSTRUCTURE

3,000 PSI 3,000 PSI 3,000 PSI


STRENGTH OF WALLANDSUPERSTRUCTURESOIL BEARINGCAPACITY

95 KPA 95 KPA 95 KPA

SEISMIC LOAD ZONE 4 ZONE 4 ZONE 4LOADINGS 50 PSF 50 PSF 50 PSFFIRE RESISTANCE 2 HOURS 2 HOURS 2 HOURSThis is one of the outputs generated from the consultation meetings of theNHA TWG on Disaster-Resilient Housing in November to December 2013.

PROPOSED LOT SIZE:40 sq. m. (10.00m x 4.00m)


SITE DEVELOPMENT PLAN

GROUND FLOOR AREA22 sq. m. (5.50m x 4.00m)


GROUND FLOOR PLAN

LOFT FLOOR AREA11 sq. m. (2.75m x 4.00m)


LOFT FLOOR PLAN


CROSS SECTION


LONGITUDINAL SECTION


FRONT ELEVATION


REARELEVATION


TYPHOON SHUTTER DETAILSFRONT ELEVATION


TYPHOON SHUTTER DETAILSSECTIONSIDE

ELEVATION


TYPHOON SHUTTER DETAILSWINDOW SILL DETAILS


CONCRETE GUTTER DETAIL


INCLINED ROOF BEAM DETAILS


PURLIN EMBEDMENT DETAILS


ROOFING SHEETSOVERLAP DETAIL

OUTLINE SPECIFICATIONSSTRUCTURAL : RC BEAM, COLUMN & FOOTINGRC WALL FOOTINGRC FLOOR SLAB, 100MM thk. WITH 10mmRSB @ 400mm BOTHWAYSWALLS : 150mm thk. CHB (FIREWALL)

100mm thk. CHB, PLASTER FINISH (EXTERIOR)100mm thk. CHB, TOOL JOINT FINISH (INTERIOR)

ROOFING : 0.404mm thk CORR. G.I. ROOFING SHEETS at 82.0mm X 50mm X 150mm C-PURLINS WITH12mm SAGROD @ MIDPOINT

DOORS(OPTIONAL) : 1 FLUSH DOOR TYPE1 PANEL DOOR TYPE1 PVC DOOR TYPEWINDOWS (OPTIONAL) : ALUMINUM JALOUSIE TYPE with TYPHOON SHUTTERS

: 4 x 8 x 8 CONCRETE LOUVER BLOCKSFINISHES : EXTERIOR WALL PLASTERED AND PAINTED FINISH

T & B FLOOR 200mm X 200mm FLOOR TILESPLUMBING : WATER LINE uPVC PIPES

SANITARY & DRAINAGE LINES PVC PIPESTOILET BOWL PAIL FLUSH TYPE LAVATORY

SEPTIC TANK : PURIFYING POLYTHYLENE SEPTIC TANK


OUTLINE SPECIFICATIONSSTRUCTURAL : RC BEAM, COLUMN & FOOTINGRC WALL FOOTINGRC FLOOR SLAB, 100MM thk. WITH 10mmRSB @ 400mm BOTHWAYSWALLS : 150mm thk. CHB (FIREWALL)

100mm thk. CHB, PLASTER FINISH (EXTERIOR)100mm thk. CHB, TOOL JOINT FINISH (INTERIOR)

ROOFING : 0.404mm thk CORR. G.I. ROOFING SHEETS at 82.0mm X 50mm X 150mm C-PURLINS WITH12mm SAGROD @ MIDPOINT

DOORS(OPTIONAL) : 1 FLUSH DOOR TYPE1 PANEL DOOR TYPE1 PVC DOOR TYPEWINDOWS (OPTIONAL) : ALUMINUM JALOUSIE TYPE with TYPHOON SHUTTERS

: 4 x 8 x 8 CONCRETE LOUVER BLOCKSFINISHES : EXTERIOR WALL PLASTERED AND PAINTED FINISH

T & B FLOOR 200mm X 200mm FLOOR TILESPLUMBING : WATER LINE uPVC PIPES

SANITARY & DRAINAGE LINES PVC PIPESTOILET BOWL PAIL FLUSH TYPE LAVATORY

SEPTIC TANK : PURIFYING POLYTHYLENE SEPTIC TANK


STRUCTURAL DRAWINGS

INCREASE BEAM WIDTH FROM150mmto175mm

INCREASE SIZE OF REINFORCING STEELBARS FROM12 mm

TO16 mm DIAMETER

DPWH COMMENTS AND RECOMMENDATIONS


STRUCTURAL DRAWINGS

INCREASE COLUMN WIDTH FROM150mmto175mmINCREASE SIZE OF LOFT WOODEN FLOORJOISTS FROM2 x 3 to2 x 6



STRUCTURAL DRAWINGSCHANGE ROOFING SCREWS FROM

TEKSCREW TO J-BOLT



ARCHITECTURAL DRAWINGS

REVISED STAIR RISER HEIGHT TOACCOMMODATE LARGER FLOOR JOIST

AND BEAMINCREASE FLOOR TO FLOOR HEIGHT TOACCOMMODATE LARGER FLOOR JOISTAND BEAM (FROM 5.30M TO 5.50M)

COMPARATIVE ANALYSIS22 sq.m.LOFTABLEROWHOUSE

22 sq.m.ROWHOUSEWITH LOFT

COST Php 125,000.00 Php 219,723.63TOTAL FLOOR AREA 22sq.m. 33 sq.m.

(22 sq.m. G/F AREAand 11 sq.m. LOFT)


COST Php 125,000.00 Php 219,723.63TOTAL FLOOR AREA 22sq.m. 33 sq.m.

(22 sq.m. G/F AREAand 11 sq.m. LOFT)

COST PER SQ. M. Php 5,681.81 Php 6,658.29

22 sq.m. LOFTABLEROWHOUSE

22 sq.m. ROWHOUSEWITH LOFT

ARCHITECTURALArchitectural Features Structural Provision

for Loft and StairsLoft, Stairs, WoodenTyphoon Shutters

COMPARATIVE ANALYSIS


Structural Provisionfor Loft and Stairs

Loft, Stairs, WoodenTyphoon Shutters

G/F Floor to LoftFloor Finish Height

2.40meters 2.60meters

Gutter No Gutter andDownspout

Concrete Gutter(3 inches thick) andDownspout

Height of Firewall 4.80meters 5.80metersRoof Thickness 0.30millimetersthk.

Corrugated GI Sheet0.40millimetersthk.Corrugated GI Sheet

Roof Purlins 1.2 x 100 x 50mm 2.0 x 150 x 65mm



STRUCTURALColumn Size 200 x 150 mm, with

4-12 mm reinforcingbar

250 x 175 mm, with4-16 mm reinforcingbar





Beam Size B-1: 250 x 150 mm,with 4-12 mm reinforcing bar

B-1 and B-3:300 x 175 mm andB-2: 250 x 175 mm,with4-16 mm reinforcingbar

Footing Size 400 x 400mm 800 x 800mmWall Footing Size 300mm 400mm



ELECTRICALNumber of LightingOutlets

3 4



Number of LightingOutletsNumber ofConvenience Outlets

3 4

Number of Switches 2 2Service Entrance 2-5.5 mm THW +

1-3.5 mm TW in 20mm PVC CONDUIT

2-5.5 mm THHN +1-5.5 mm THHN(G) in 20 mm RSCCONDUIT

DESCRIPTION MATERIALCOST LABOR COSTESTIMATED

DIRECT COSTTOTAL INDIRECT

COST TOTAL COST

I. EARTHWORKSSUB-TOTAL 2,418.00 1,943.63 4,361.63 610.63 4,972.25

II. CONCRETE/STRUCTURAL WORKSSUB-TOTAL 65,420.75 19,135.65 84,556.41 11,837.90 96,394.30

III. FORMWORKSSUB-TOTAL 3,460.00 720.78 4,180.78 585.31 4,766.09

IV. ROOFING WORKSSUB-TOTAL 16,105.00 3,952.28 20,057.28 2,808.02 22,865.30


SUB-TOTAL 16,105.00 3,952.28 20,057.28 2,808.02 22,865.30V. DOORS AND JAMBS

SUB-TOTAL 13,000.00 1,741.89 14,741.89 2,063.86 16,805.75VI. WINDOWS

SUB-TOTAL 7,008.00 1,321.43 8,329.43 1,166.12 9,495.55VII. PLUMBING WORKS

SUB-TOTAL 14,557.32 4,805.39 19,362.70 2,710.78 22,073.48VIII. ELECTRICAL WORKS

SUB-TOTAL 12,881.00 4,127.43 17,008.43 2,381.18 19,389.61IX. ARCHITECTURAL WORKS

SUB-TOTAL 17,880.74 2,260.76 20,141.49 2,819.81 22,961.30

TOTAL 152,730.81 40,009.22 192,740.02 26,983.60 219,723.63

THE DPWH APPROVAL OF THE PLAN IS BASED ONTHE REVIEW OF DESIGN CONCEPT AND DESIGNANALYSIS SUBMITTED BY NHA.

CLOSE SUPERVISION DURING CONSTRUCTIONSHOULD BE UNDERTAKEN BY NHA TO ENSURECOMPLIANCE TO THE APPROVED PLANS.

SUFFICIENT TESTING OF MATERIALS SHOULD BECONDUCTED TO VERIFY COMPLIANCE TO STANDARDDPWH STANDARDS.

DPWH NOTES


THE DPWH APPROVAL OF THE PLAN IS BASED ONTHE REVIEW OF DESIGN CONCEPT AND DESIGNANALYSIS SUBMITTED BY NHA.

CLOSE SUPERVISION DURING CONSTRUCTIONSHOULD BE UNDERTAKEN BY NHA TO ENSURECOMPLIANCE TO THE APPROVED PLANS.

SUFFICIENT TESTING OF MATERIALS SHOULD BECONDUCTED TO VERIFY COMPLIANCE TO STANDARDDPWH STANDARDS.

day2session3a regala nha standards for housing design construction

Documents

site criteria

site preservation alterationa

preservation of site

liquidwaste disposal

land allocation2

localcontext housing

nha projects

planning principlesbeing