Day2Session3A REGALA NHA Standards for Housing Design Construction

STANDARDS FOR HOUSING STANDARDS HOUSING DESIGNAND CONSTRUCTIO CONSTRUCTION N Relevance/Appl Relev ance/Applic icability ability in View of “New Normal”

A presentat p resentation ion by Ar. Ar. Maria Benita O. Reg Regala. ala. fuap Manager,, Housing Manager Hou sing Technology Technology Development Office (HTDO), NHA to the Technical Technical Workshop on Holistic Solutions for Resilient Low-Cost Housing at The Oracle Hotel, Quezon City on 03 April 2014

OUTLINE OF PRESENTATION •

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Standards from BP 220 Site Selection Criteria and Planning Principles being applied for NHA Projects 22 m Row House Mo e w t 11 m Lo t developed as a disaster-resilient housing

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OUTLINE OF PRESENTATION •

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•

Standards from BP 220 Site Selection Criteria and Planning Principles being applied for NHA Projects 22 m Row House Mo e w t 11 m Lo t developed as a disaster-resilient housing

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BP 220 Standards A. Site Criteria (Sec. 5, BP 220) 1. Avail Availabi abilit lityy of Basi Basicc Needs Needs (Wat (Water er,, Move Movemen mentt and Circulation, Storm Drainage, Solid and Liquid Waste Disposa , Par s P aygroun , Power 2. Conf Confor ormi mity ty with with Zon Zonin ing g Ordi Ordina nanc nces es// City City or Municipality Land Use Plan 3. Phy Physic sical Sui Suitabi ability ity 4. Accessibility 3

BP 220 Standards B. Planning Considerations (Sec. 5, BP 220) 1. Area Planning 2. Site Site Pre Prese serv rvat atio ion/ n/ Alt Alterat eratio ion n a. Slope b. Pres Preserv ervat atio ion n of Site Site Asse Assets ts c. Ground Cover

3. Easements 4. Circulation 4

BP 220 Standards B. Design Parameters (Sec. 5, BP 220) 1. 2. 3. 4. 5. 6. 7.

Land Allocation Lot Requirement Length of Block Shelter Component Setback/ Yard Water Supply Electrical Power Supply

8.Sewage Disposal System 9. Drainage Disposal System 10. Garbage Disposal System 11. Firefighting

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SITE SELECTION CRITERIA •

LOCATION –

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With consideration of both the regional and local context Housing projects shall be within suitable sites for housing and outside potential hazard prone and protection areas

ACCESSIBILITY FROM MAJOR TRANSPORTATION FACILITIES –

Site shall have an existing legal road right of way from a major thoroughfare

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ZONING AND LAND USE CLASSIFICATION –

Classification shall be Residential as defined under approved CLUP

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Must be relatively flat (or filling requirement for rolling terrain shall not exceed max cost) Slopes should not exceed 15% max gradient. For high density, slope should be below 5%. Soil characteristics must conform to the suitability standards for construction by DENR through its Bureau of Mines and Geo-Sciences 7


WATER SUPPLY FACILITIES –

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POWER SUPPLY FACILITIES –

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

Presence of power utility company that will serve the needs of new community

DRAINAGE –

Natural waterways and outfalls shall be established on ground 8

SITE PLANNING PRINCIPLES •

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Compliance to all existing laws, rules and regulations on housing (local or national) Adoption of the green infrastructure and preservation of existing natural assets of the land (e.g., trees, ground cover, vegetation, natural waterways) Promotion of “walkable communities” 9


Promotion of appropriate community facilities and infrastructure –

To serve the socio-economic needs and cultural the implementation of environmental management programs in the housing sites

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NHA shall provide the minimum requirements for community facilities

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LAND USE ALLOCATION PER SITE 66% Saleable –

Residential housing development

34% Non-Saleable –

Circulation/ Road Network

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Parks and Playgrounds

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Community Facilities

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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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MAXIMUM ALLOWABLE DENSITY PER HECTARE –

Horizontal Development •

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

Vertical Development (Low Rise Buildings) •

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2-Storey LRB 3-Storey LRB 4-Storey LRB 5-Storey LRB

: 225 units/ha. : 245 units/ha. : 325 units/ha. : 405 units/ha. 13

HOUSING UNIT DESIGN GUIDELINES •

MINIMUM FLOOR AREA – – –

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22.0 square meters loftable 22.0 square meters with 11 sq.m loft 24.0 square meters (for LRBs)

HIGHER THAN BP 220 MINIMUM

Models for lots along major roads may be modified to include provision of a space for home-based economic activity, but should not exceed cost parameters If new technology or material substitute: must have passed AITECH (Accreditation of Innovative Technologies for Housing) 14

STANDARDS FOR COMMUNITY FACILITIES •

Provision of community facilities shall be determined based on the needs of target beneficiaries –

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Based on existence of public infrastructure within the 5-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 15

OTHER FACTORS IN PROJECT PLANNING Factors that Help Ensure Effective Project Planning and Management for Disaster Resilient Homes: Local Inter-Agency Committee with POs and NGOs organized at e s ar o e pro ec

Securing of all Environmental Clearances and Permits prior to construction: *ECC from DENR *Clearance from PHIVOLCS *Dev’t/ Building Permit from LGUs

A Planning Team and a Project Management Composite Team were set up by NHA

Community Representatives were made part of project monitoring during and after construction

Individual beneficiaries accept their housing units prior to payment to Contractors 16

22 SQ. M. ROW HOUSE MODEL FOR TYPHOON YOLANDA VICTIMS (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) REVISED 06 MAR 2014

TOTAL FLOOR AREA: 33 sq. m. (GROUND FLOOR AND LOFT) 17

22 SQ. M. ROW HOUSE MODEL FOR TYPHOON YOLANDA VICTIMS (WITH 11 SQ. M. LOFT) DISASTER RESILIENT HOUSING STRUCTURAL DESIGN STANDARDS DESIGN PARAMETER

ONE-STOREY

TWO- STOREY

3-STOREYS OR MORE

WIND LOAD

250 KPH

250 KPH

250 KPH

STRENGTH OF WALL

3,000 PSI

3,000 PSI

3,000 PSI

SOIL BEARING CAPACITY

95 KPA

95 KPA

95 KPA

SEISMIC LOAD

ZONE 4

ZONE 4

ZONE 4

LOADINGS

50 PSF

50 PSF

50 PSF

FIRE RESISTANCE

2 HOURS

2 HOURS

2 HOURS

SUPERSTRUCTURE

This is one of the outputs generated from the consultation meetings of the NHA TWG on Disaster-Resilient Housing in November to December 2013.

22 SQ. M. ROW HOUSE MODEL FOR TYPHOON YOLANDA VICTIMS (WITH 11 SQ. M. LOFT) PROPOSED LOT SIZE: 40 sq. m. (10.00m x 4.00m)

SITE DEVELOPMENT PLAN

22 SQ. M. ROW HOUSE MODEL FOR TYPHOON YOLANDA VICTIMS (WITH 11 SQ. M. LOFT) GROUND FLOOR AREA 22 sq. m. (5.50m x 4.00m)

GROUND FLOOR PLAN

22 SQ. M. ROW HOUSE MODEL FOR TYPHOON YOLANDA VICTIMS (WITH 11 SQ. M. LOFT) LOFT FLOOR AREA 11 sq. m. (2.75m x 4.00m)

LOFT FLOOR PLAN


CROSS SECTION


LONGITUDINAL SECTION


FRONT ELEVATION


REAR ELEVATION


FRONT ELEVATION

TYPHOON SHUTTER DETAILS


SECTION

SIDE ELEVATION



WINDOW SILL DETAILS



CONCRETE GUTTER DETAIL


INCLINED ROOF BEAM DETAILS


PURLIN EMBEDMENT DETAILS


ROOFING SHEETS OVERLAP DETAIL

22 SQ. M. ROW HOUSE MODEL FOR TYPHOON YOLANDA VICTIMS (WITH 11 SQ. M. LOFT) OUTLINE SPECIFICATIONS STRUCTURAL : RC BEAM, COLUMN & FOOTING RC WALL FOOTING RC FLOOR SLAB, 100MM thk. WITH 10mmØ RSB @ 400mm BOTHWAYS WALLS : 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 8’ 2.0mm X 50mm X 150mm C-PURLINS WITH 12mmØ SAGROD @ MIDPOINT DOORS(OPTIONAL) : 1 – FLUSH DOOR TYPE 1 – PANEL DOOR TYPE 1 – PVC DOOR TYPE WINDOWS (OPTIONAL) : ALUMINUM JALOUSIE TYPE with TYPHOON SHUTTERS : 4” x 8” x 8” CONCRETE LOUVER BLOCKS FINISHES : EXTERIOR WALL – PLASTERED AND PAINTED FINISH T & B FLOOR – 200mm X 200mm FLOOR TILES PLUMBING : WATER LINE – uPVC PIPES SANITARY & DRAINAGE LINES – PVC PIPES TOILET BOWL – PAIL FLUSH TYPE LAVATORY SEPTIC TANK : PURIFYING POLYTHYLENE SEPTIC TANK


INCREASE SIZE OF REINFORCING STEEL BARS FROM 12 mm ø TO 16 mm ø DIAMETER

INCREASE BEAM WIDTH FROM 150mm to 175mm

STRUCTURAL DRAWINGS

22 SQ. M. ROW HOUSE MODEL FOR TYPHOON YOLANDA VICTIMS (WITH 11 SQ. M. LOFT) DPWH COMMENTS AND RECOMMENDATIONS

INCREASE SIZE OF LOFT WOODEN FLOOR JOISTS FROM 2” x 3” to 2” x 6”

INCREASE COLUMN WIDTH FROM 150mmto 175mm

STRUCTURAL DRAWINGS


CHANGE ROOFING SCREWS FROM TEKSCREW TO J-BOLT

STRUCTURAL DRAWINGS


INCREASE FLOOR TO FLOOR HEIGHT TO ACCOMMODATE LARGER FLOOR JOIST AND BEAM (FROM 5.30M TO 5.50M)

REVISED STAIR RISER HEIGHT TO ACCOMMODATE LARGER FLOOR JOIST AND BEAM

ARCHITECTURAL DRAWINGS

22 SQ. M. ROW HOUSE MODEL FOR TYPHOON YOLANDA VICTIMS (WITH 11 SQ. M. LOFT) COMPARATIVE ANALYSIS

22 sq.m. LOFTABLE ROWHOUSE

22 sq.m. ROWHOUSE WITH LOFT

COST

Php 125,000.00

Php 219,723.63

TOTAL FLOOR AREA

22sq.m.

33 sq.m. (22 sq.m. G/F AREA and 11 sq.m. LOFT)

COST PER SQ. M.

Php 5,681.81

Php 6,658.29

22 SQ. M. ROW HOUSE MODEL FOR TYPHOON YOLANDA VICTIMS (WITH 11 SQ. M. LOFT) COMPARATIVE ANALYSIS 22 sq.m. LOFTABLE ROWHOUSE


Architectural Features

Structural Provision for Loft and Stairs

Loft, Stairs, Wooden Typhoon Shutters

G/F Floor to Loft Floor Finish Height

2.40 meters

2.60 meters

Gutter

No Gutter and Downspout

Concrete Gutter (3 inches thick) and Downspout

Height of Firewall

4.80 meters

5.80 meters

Roof Thickness

0.30millimetersthk. Corrugated GI Sheet

0.40millimetersthk. Corrugated GI Sheet

Roof Purlins

1.2 x 100 x 50 mm

2.0 x 150 x 65mm

ARCHITECTURAL



Column Size

200 x 150 mm, with 4-12 mm ø reinforcing bar

250 x 175 mm, with 4-16 mm ø reinforcing bar

Beam Size

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

B-1 and B-3: 300 x 175 mm and B-2: 250 x 175 mm, with 4-16 mm ø reinforcing bar

Footing Size

400 x 400 mm

800 x 800 mm

Wall Footing Size

300 mm

400 mm

STRUCTURAL



ELECTRICAL Number of Lighting Outlets

3

4

Number of Convenience Outlets

3

4

Number of Switches

2

2

Service Entrance

2-5.5 mm² ø THW + 1-3.5 mm² ø TW in 20 mm ø PVC CONDUIT

2-5.5 mm² ø THHN + 1-5.5 mm² ø THHN (G) in 20 mm ø RSC CONDUIT

22 SQ. M. ROW HOUSE MODEL FOR TYPHOON YOLANDA VICTIMS (WITH 11 SQ. M. LOFT) DESCRIPTION

MATERIAL COST

LABOR COST

ESTIMATED TOTAL INDIRECT TOTAL COST DIRECT COST COST

I. EARTHWORKS SUB-TOTAL

2,418.00

1,943.63

4,361.63

610.63

4,972.25

SUB-TOTAL

65,420.75

19,135.65

84,556.41

SUB-TOTAL

3,460.00

720.78

SUB-TOTAL

16,105.00

3,952.28

20,057.28

2,808.02

22,865.30

SUB-TOTAL

13,000.00

1,741.89

14,741.89

2,063.86

16,805.75

SUB-TOTAL

7,008.00

1,321.43

8,329.43

1,166.12

9,495.55

SUB-TOTAL

14,557.32

4,805.39

19,362.70

2,710.78

22,073.48

SUB-TOTAL

12,881.00

4,127.43

17,008.43

2,381.18

19,389.61

SUB-TOTAL

17,880.74

2,260.76

20,141.49

2,819.81

22,961.30

II. CONCRETE/STRUCTURAL WORKS 11,837.90

96,394.30

III. FORMWORKS 4,180.78

585.31

4,766.09

IV. ROOFING WORKS

V. DOORS AND JAMBS

VI. WINDOWS

VII. PLUMBING WORKS

VIII. ELECTRICAL WORKS

IX. ARCHITECTURAL WORKS

TOTAL

152,730.81

40,009.22

192,740.02

26,983.60

219,723.63

Day2Session3A REGALA NHA Standards for Housing Design Construction

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