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Different drainage system
DRAINAGE SYSTEM
3
SURFACE WATER DRAINAGE CHARACTERISTIC OF GOOD DRAINAGE SYSTEM
4
1. Final Platform Level Must Be Above Flood
INTRODUCTION
2. Provide Retention Pond To Retain/Store Surface Water Before
IN MALAYSIA A SEPARATE SYSTEM IS USED TO DRAIN Draining Downstream.
SEWAGE AND SURFACE WATER.
CIRCULAR CLOSED CONDUITS ARE USED AS SEWERS AND 3. Drain should be constructed with efficient gradient 1:40, 1:60,1:80,
1:120
OPEN CHANNEL DRAINS USED AS SURFACE WATER
DRAINAGE.
4. Size and depth of drainage system should be enough to cater water
SURFACE WATER AS A RESULT OF RAINFALL MUST BE during heavy storm in order to prevent any flash flood
DRAINED AS FAST AS POSSIBLE OUT OF THE
DEVELOPMENT AREA TO AVOID FLASH FLOOD. 5. Drain should be design according to the purpose and function of
drainage system, so that it can work efficiently
6. Maintenance to drainage system to prevent any blockage
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TYPES OF DRAIN Main / Monsoon Drain
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Any drain that requires width of more than 4 feet
TYPES OF DRAIN or 1.2 meter.
1. Main Drain / Monsoon Drain
There will be at least one such drain in any housing
2. RCP Concealed Drain
development.
3. PC Covered Drain / Box Drain
4. PC Open Drain (V and U Shape) The exact size will depend on the hydraulics
5. Cascade Drain parameters of the area that it serves.
6. Scupper Drain This is normally rectangular RC or pre-cast concrete
7. Sub-soil Drain drain
8. Roadside Drain
Main / Monsoon Drain
Main / Monsoon Drain RCP Concealed Drain
Spigot & socket with
rubber Joint
600 Dia. Spigot Socket RCP Drain
PC Main / Monsoon Drain
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PC Covered Drain / Box Drain PC Cascade Drain / Roadside Drain
Mortar Spigot & socket with
Joint rubber Joint CASCADE DRAIN BERM DRAIN
600 x 600 PC Covered /Box Drain
CASCADE DRAIN ROADSIDE DRAIN
SCUPPER DRAIN
PC Open Drain
A drain and opening in the side of a building, wall or
road for running off and draining off water
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Sub-soil Drain
POND AREA & DRAINAGE DISCHARGE OUTLET CHARACTERISTIC OF VARIOUS TYPES OF DRAIN
TYPES OF DRAIN CHARACTERISTIC DIAGRAM
Cascading Drain - Drain construct in stages (stair)
- As a support for hill drain
- Construction only for embankment
along roadside
Scupper Drain - Construction at roadside area
- To flow water along roadside to
drainage
during rainfall
Roadside Drain - Construction at roadside area
- Function of roadside drain is to
designed to be installed within the ground in order to remove excessive prevent flooding at road area
water from the soil, so that it doesn’t cause damage to buildings or to
the landscape
CHARACTERISTIC OF VARIOUS TYPES OF DRAIN Unplasticized Material
(UPVC) Polyvinyl chloride Vitrified clay pipes
TYPES OF DRAIN CHARACTERISTIC DIAGRAM
(PVC) (VCP)
Pre Cast V Drain - "V” Shape
- Normally can be found along
roadside or as a berm drain.
Pre Cast U Drain - "U” Shape
- Normally can be found at around
perimeter houses or building.
PC Box Drain RCP Drain HDPE Sub-soil Drain
R.C Drain - Drain which made up from
reinforced concrete structure.
- In-situ reinforced concrete drain
- Construction for roadside drain
Half Round Drain - Half Round Shape
- Construction of drain for housing
area
V-Shape Drain U-Shape Drain UPVC Pipe
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Installation & Laying Of PC U-shape/Box Drain
Installation & Laying Of RC Pipe / Storm Water Drain
1 2 3 4
1 2 3
5 Covered Drain
4 5 6
6 7
Construction of Concealed Drain POND AREA & DRAINAGE DISCHARGE OUTLET
Golf Course Drainage & Sub-soil Drain
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COMPARISON METHOD OF DRAIN CONSTRUCTION
15m
15m
600mm dia.RCP Socket Spigot
225mm Half Round Glazed
Class ‘X’
ROAD
75m 15m 75m
ROAD
Grass Swale 75x75 Strut @ 3m c/c
15m
Compact Earth
1340mm
Compact Earth
1340mm
600mm
Double Brickwall
dia.RCP
socket
spigot Class Plastering
‘X’ 15m 2% 225mm ø Half Round
Hard Material Glazed
Concrete G15
1000mm 1000mm
CONCEALED DRAIN OPEN DRAIN
COMPARISON METHOD OF DRAIN CONSTRUCTION
1 EXCAVATION
75x75 Strut @ 3m c/c
Grass Swale
5 5
Compact Earth
450mm
Compact Earth
4
70mm 3 6 6 3
1340mm
1127.5mm Double Brickwall
7 7
600mm dia.RCP socket
spigot Class ‘X’ 600mm Plastering
2% 225mm ø Half Round
3 70mm
2%
Glazed
112.5mm 4 4
Hard Material 2 150mm 100mm Concrete G15
2
80mm 740mm 80mm 35 240 450mm 240 35
mm mm mm mm
1000mm
1000mm
CONCEAL DRAIN OPEN DRAIN
