Lowering Housing Development Costs Towards A More Sustainable Housing Market: Divergent Dwelling Design (D3) Experience

Transcription

1 1 Lowering Housing Development Costs Towards A More Sustainable Housing Market: Divergent Dwelling Design (D3) Experience Ir. Dr Zuhairi Abd. Hamid, FASc Chief Executive Officer of CREAM Construction Research Institute of Malaysia (CREAM)

2 Affordable Housing Affordable housing in the past has never been designed to last. Its aimed to provide short term solution for maximum number of houses in the shortest possible time-to meet urgent housing demand

3 ADEQUATE and AFFORDABLE HOUSING is one of the main challenges faced by developing countries like Malaysia which is heading towards the status of a high income nation. This challenge requires an integrated solution that is through the combination of SCIENCE, TECHNOLOGY AND INNOVATION

4 NO. OF RESIDENTIAL PROPERTY TRANSACTION BASED ON PRICE RANGE Considering the trend of property appreciation has shifted towards low end to middle-high-end, supply of affordable houses range RM200K to RM500k are expected to increased in the future. (Source : NAPIC)

5 FOREIGN WORKERS IN MALAYSIA In Malaysia, construction industries was recorded as the industry with the lowest productivity level compared to other industries Comparison of Workers Productivity based on Sectors Percentage of High-skilled & Low-skilled Foreign Workers in the Construction Sector (Source: MPC 2016) (Source: MPC 2016)

6 FOREIGN WORKERS IN MALAYSIA Percentage Comparison of Foreign Workers based on Sectors Construction Agriculture Manufacturing Services^ Total (Source: MOHA, EPU) Most construction companies in Malaysia are still inclined towards the recruitment of unskilled foreign labour who are willing to work in unfavourable conditions with lower pay.

7 CURRENT AFFORDABLE HOUSING CHALLENGES OCCUPANTS Rooms too hot Kitchen space too small and inefficient 3rd bedroom often not habitable Insufficient courtyard area Insufficient natural lighting * Source: survey conducted by University Putra Malaysia (UPM).

8 D3 stands for Divergent Dwelling Design which focuses on affordability, adaptability, quality and sustainability via a collaboration between Sime Darby Property and CREAM (research arm of CIDB). Objectives: To meet the affordable housing needs of the nation with quality homes An innovative design and construction method to improve the quality of affordable homes that creates value on a massive scale. To adopt higher IBS content in line with the National Construction Industry Road Map to enhance construction time, quality and cost. Benefits: Improves standard of living without the penalty of high prices Improves livability with superior designs Improves construction speed with the use of Industrialized Building System (IBS) Improves site safety and lower labor dependency via off-site fabrication Reduces material wastage and preliminary cost through modularization

9 A combined design and construction system that makes use of the prefabrication construction to produce a variety of housing design options that meet potential user requirements not yet identified at the design stage, while retaining principal uniformity to facilitate the execution of simple but accurate construction with a minimal initial cost

10 KECEKAPAN NEW RUANG INNOVATION DESIGN CONCEPT VS Common mass housing design (900sqft) D3 mass housing design (900sqft)

11 NEW INNOVATION DESIGN CONCEPT 11

12 NEW INNOVATION DESIGN CONCEPT 12

13 NEW INNOVATION DESIGN CONCEPT 13

14 DESIGN METHODOLOGY Fragmentation of dwelling into independent design units that enable mass production and mass customisation

15 DESIGN METHODOLOGY From Craftsmanship to Manufacturing 15

16 Divergence Construction Methodology The divergent nature of D3 allows each dwelling pods, such as bathroom, kitchen and wall partition, to be built, altered and renewed independent of others. The detailing of the pods was based on criteria of rapid assembly process; the use of repetitive units and guarantee quality through precision. CONSTRUCTION EFFICIENCY 16

17 CONSTRUCTION EFFICIENCY KECEKAPAN PEMBINAAN IBS COMPONENT COMPONENT 1 Cast In Situ Shear Wall Size : 250 mm thick COMPONENT 2 Precast Column Size : 450 Mm X 1100 Mm 6 COMPONENT 3 Precast Beam Size : 250 X 550 Mm 1 6 COMPONENT 4 Precast Plank Slab Size : 150 X 1200 X 6500 Mm COMPONENT 6 Precast Acotect Wall Size : 100 mm Thick COMPONENT 8 Prefab Toilet / Bath Unit Size : 1550 X 1950 X 2350 Mm Quantity : 2 Nos. 7 8 NON-IBS COMPONENT COMPONENT 5 Prefab Aluminium Sliding Door Adj. Louvers Size : 1600 X 2100 mm 4 9 COMPONENT 7 Ceramic Floor Tiles Size : 400 X 400 mm COMPONENT 9 Prefab Ms Railing Size : 1200 mm AFFL COMPONENT 10 Plumbing and M&E

18 PREFABRICATED TOILET POD 18

19 PREFABRICATED TOILET POD Ceiling, Wall and Floor are made of SMC (Sheet Moulding Compound) material 19

20 IBS SCORE D3 RSKU IBS SCORE IBS Structure System - 38 points Precut metal roof truss PC column, beam and slab In-situ column, beam and slab with reusable system formwork IBS Wall System - 13 points Dry Wall System In-situ concrete with reusable system formwork Other IBS System - 28 points Utilisation of standardized components based on MS 1064 Repetition of structural Layout Total IBS Score: points

21 ENERGY EFFICIENCY PASSIVE DESIGN STRATEGY Reduce interior temperature Maximise airflow rate Provide protection from sunlight and rain. Wall set back Recessed external wall Indoor-outdoor living Cross ventilation Urban farming 21 Natural lighting

22 ENERGY EFFICIENCY PASSIVE DESIGN STRATEGY Recessed external wall Cross ventilation Indoor-outdoor living Urban farming

23 MOA SIGNING CEREMONY on 26 JANUARY 2017

24 MOA SIGNING CEREMONY on 26 JANUARY

25 Tajaan R&D

26 PROTOTYPE & PILOT PROJECT SITE LOCATION RSKU (EG2) Apartment 562 units 7.33ac D3(Lot 52051) Prototype Gallery cum Project Site Office 0.53ac KEY PLAN 26

27 PROTOTYPE To materialise and commercialise D3SH research into reality To study customer feedback towards D3 design To study energy efficiency functions of D3 design To study customer feedback on the usage of construction materials and IBS building techniques

28 D3 Pilot Project Township : Elmina West Lot No. : PT Area : 7.33 acre No. of unit : 562 units ; 76.6 unit/acre Density : 79% Residential (5.78 acre) Landuse : 21% Commercial (1.54 acre) Total GFA : sqft

29 PILOT PROJECT Type C 900 sqft 98 units Type D 1000 sqft 464 units

30 SITE CONTEXT NEAR TO AMENITIES - schools & linkage to existing Saujana Utama neighbourhood R S K U ( E G 2 ) Apartments 562 Units 7.33ac RSKU TYPE C & D allow direct cost comparison with SDP s existing D&B BBR 17A RSKU contract TO SAUJANA UTAMA LOCATED ON NEUTRAL SITE without close proximity to sewerage plant or HT elec tower CORNER PLOT OFFERING OPTIMUM VIEW EXPOSURE 30

31 JALAN CASUARINA SHOPLOTS SITE PLAN MULTILEVEL CARPARK SURAU MPH BLOCK A BLOCK B BLOCK C 31

32 TYPICAL FLOOR LAYOUT Typical Floor Plan Block A & C 10 units = 8JD + 21JC Typical Floor Plan Block B 10 units = 9JD + 1JC 32

33 NORTH ELEVATION TOWER C (SIDE) 33 PODIUM (SIDE)

34 SECTION - BLOCK A 34

35 SECTION - BLOCK B 35

36 SECTION - BLOCK C 36

37 ENVIRONMENTAL ANALYSIS Shadow analysis Computational Fluid Dynamic (CFD) analysis Daylight Factor analysis 37

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41 3D PERSPECTIVE 41

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