byIr Ismail Abd Rahman (JKR HQ)

Ir Ellias Saidin (Perunding Ikatan)

Proposed Rainwater Harvesting System for The

Rest and Service Area

The Project is one of the component in the East Coast Expressway 2 which

consists of the construction of expressway from Jabor in Kemaman to

Chendering in Kuala Terengganu

MISSION STATEMENT EAST COAST EXPRESSWAY 2

Taking Pride in its dedication to deliver first class road infrastructures, the Public Works Department Malaysia (JKR) is fully committed in ensuring a truly pleasurable and memorable traveling experience for every road user driving along the East

Coast Expressway (ECE)

SELAMAT DATANG

HENTIAN REHAT JABOR

KEMAMAN TERENGGANU

PROJECT COMPONENTS• Food Court & Fruit Stall - 30 units• Shops, offices - 1 block• Fast Food Outlet - 1 block• Toilet - 1 blocks (Male)• Toilet - 1 block (Female)• Surau - 1 block (Male)• Surau - 1 block (Female)• Elevated Water Tank - 1 Unit• TNB Sub Station - 1 Block• Refuse Bin - 1 block• Carp park - Light & Heavy Vehicle

LOCATION PLAN

LOCATION

PROJECT BRIEF• Managed by JKR• Architectural Concept is Minangkabau Terengganu• Rest and Service Area only at one side of the

Expressway• Users from both ways will be required to exit the

same route after taking break at Rest and Service Area

• Dedicated access for the local people introduced• Using Industrialized Building System (IBS)

Components• Rainwater Harvesting System for toilet flushing

introduced

CRITERIA GREEN BUILDINGINDEX (GBI)

the rating system will provide opportunity to design and construct green, provide

energy savings, water savings, a healthier indoor environment, better connectivity to

public transport and the adoption of recycling and greenery for their projects.

(extract from slide SEMINAR ON GREEN BUILDING INDEXMALAYSIA 9th April 2009, JKR Kuala LumpurBy Ir CHEN Thiam Leong

GREEN BUILIDING INDEX RATING

(extract from slide SEMINAR ON GREEN BUILDING INDEXMALAYSIA 9th April 2009, JKR Kuala LumpurBy Ir CHEN Thiam Leong

N

LAKE

From Kuantan

To Kuantan

From Kuala

Terengganu

Exit to Kuala

Terengganu

Future Expansion

Parking Kuantan-KT

Route

Parking Kuantan-KT

Route

Parking KT-KuantanRoute

Parking KT-KuantanRoute

Parking MIEL

Recreational Area

EAST COAST EXPRESSWAY 2

Rest & Service Area

Future Expansion

P R O P O S E D R E S T A N D S E R V I C E A R E A I NP E R A S I N G K E M A M A N T E R E N G G A N U

KEY PLAN

SITE PLAN

CAWANGAN ARKITEK

SURAU (M/F )Toilet (M/F )

Shops & Offices

Foodcourt

Fruit Stall

TNB Sub Station

Fast Food Outlet

Heavy Vehicle parking

Lorry Parking

MIEL Parking

Elevated Water Ttank

Children Playground

BUILDING COMPONENT

P R O P O S E D R E S T A N D S E R V I C E A R E A P E R A S I N G EAST COAST HIGHWAY PHASE 2, TERENGGGANU DARUL IMAN

CAWANGAN ARKITEK

PELAN TAPAK

WHERE RAINWATER GOES

RWH IN MALAYSIA

• After 1998 drought, study was conducted on alternative source of supply is carried out

• In 1999 guidelines for installation a rainwater policy in Malaysia

• Purpose to reduce dependence on treated water• 2004 – NARHRIM established• 2006 – mandatory to implemented RWH to large

building, school and bungalow

RWH IN MALAYSIA

BENEFIT OF USING RAINWATER

Reduce the demand of domestic supply

Overcoming shortage of water

Reduction ofPeak Discharge

Reduction of water bills

Rainwater System Components• Roof Surface Catchments • Conveyance gutters and down pipes • Filtering - First flush• Rainwater storage tank• Booster pump • Flushing Tank• Distribution via plumbing to toilets• Water Supply Topping up by Water Authority

Water Demand forToilet Flushing

Item Usage(liters)

Average Daily use (liters)

82 nos. WC 180 l/day

180 l/day

15,000 l/day

10 nos. urinal 1800 l/day

Total 16,800 l/day

Kemaman Rainfall Data from 1986 to 2006Average Monthly Rainfall Annual Rainfall

No. Month Total (mm)

1 January 253.2

2 February 132.7

3 March 189.8

4 April 109.5

5 May 160.7

6 June 148.8

7 July 148.7

8 August 190.3

9 September 289.2

10 October 310.1

11 November 699.5

12 December 722.2

No. Year Total (mm)

10 1995 2581.0

11 1996 2125.5

12 1997 2165.5

13 1998 2512.0

14 1999 2564.0

15 2000 3721.5

16 2001 4756.5

17 2002 2848.5

18 2003 4863.0

19 2004 4115.0

20 2005 8460.5

21 2006 3012.0

Average annual rainfall 3354.81

Potential Rainfall Capture

• Roof Area = 900 m2• Kemaman Annual Rainfall = 3355 mm/year• Potential capture monthly = 900 x 3355/12

= 252 m3= 8400 liters/day

POTENTIAL WATER CAPTURED PER DAYIS 8400 LITRES/DAY

Roof Surfaces Catchments

Flushing Tank

Roof Surfaces

Catchments

Rainwater Tank

• Roof surface catches rainwater

• Transport to sump via gutter and down water pipe

•Rainwater pumped to Flushing Tank

FIRST FLUSH SYSTEM• During the first moments

of a rain storm pollen, mold spoors and other contaminants are washed off a rooftop and into its drainage system.

• First Flush device to remove this foul water it will be washed into a rainwater harvesting system.

FIRST FLUSH DIVERTER

•Prevents the first most contaminated rainwater components to improve quality and safety

Help extend the life of pumps (used to distribute rainwater for use)andinternal appliances (such as hot water systems, washing machines, dishwashers, etc)

•Reduce tank maintenance

FILTER SUMP COLLECTION

• To collect rainwater• First flush instilled

inside rainwater down pipe

• Rainwater filtered by stainless steel screen

RAINWATER TANK

Flush Valve Tank

Rainwater Supply

Topping up Supply

FLUSH VALVE TANK

•

• Rainwater supply only for toilet flushing• Tests to be conducted to check the quality

of rainwater • Flush valve tank to supply rainwater for

toilet flushing• Topping up supply from elevated water

tank during dry season or no rainwater

RAINWATER FOR TOILET FLUSHING

Toilet

CONCLUSION

• JKR is moving towards implementation sustainable design

• First JKR Project rainwater harvesting in rest and service area

• No extensive treatment required• Reduce water demand/consumption• Compliance Green Building Index