�ݺ�ߣ

N A M E : N U R S Y A Z A N A B I N T I A H M A D Z U L K I F L I
N U M B E R M A T R I C : 1 1 1 4 9 4
S U P E R V I S O R : A S S O C . P R O F . D R . R O Z I A B D U L L A H
EAA 492/6:
Final Year Project
Academic Session 2014/2015
Peak Flow Attenuation of On Site Detention (OSD)
using Storm Water Management Model (SWMM)

Introduction
 Stormwater runoff is the water from rain falls on the land and drain
into watershed .
 Impervious surfaces will cause the stormwater runoff to flow
quickly over the ground into the drain or stream.
 The excess stormwater flow into the stream without control will
cause flooding.
 Stormwater management is an approach for controlling the volume
of stormwater runoff flow into the stream.

Introduction
 The function of On Site Detention is as a water quantity device.
 By providing the temporary storage and release the water
gradually it will limit the peak outflow rate.
 Storm Water Management Model (SWMM) is the dynamic
rainfall-runoff simulation model used to simulate continuous the
runoff quantity and quality from primarily urban area.

Literature review
Author /years Review
N.C DEPARTMENT OF
TRANSPORTATION (2006)
STORMWATER AND YOU
“Stormwater runoff is the water rain falls on the ground and then
flow into watershed without seeping into the ground”
Stormwater management
manual
(2008)
“ water runoff which is produced from precipitation on any site,
basin or watershed and usually refer as runoff”

Literature review
Author /years Review
Lewis A.R.
(2010)
Storm Water Management
Model User’s Manual version
5.0
“ SWMM is a model to analyze the rainfall –runoff for
continuous analysis of runoff quantity and quality from urban
area”
Donald .I.P
Bruce W.B
(2006)
ON SITE STORMWATER
DETENTION “THE
SWINBURNE METHOD”
“All component of the drainage system need to be designed to
carry the flows generated by specified design storm”

Problem statement
 Urbanization increase the volume of stormwater runoff flow
into the stream.
 Rapid disposal approach requires continuous upgrading of the
drainage.
 Additional cost are required to design and construct the drain to
accommodate the increase volume of runoff.

Objectives
 To develop the Storm Water Management Model (SWMM) for
On site detention (OSD).
 To study the flow attenuation of On Site Detention (OSD).
 To evaluate the OSD for terrace house, semi D and bungalow.

Scope of works
 10 years Average Recurrence Interval (ARI) of On Site
Detention (OSD) design .
 Research location : Alor Setar
 Model used : Storm Water Management Model
 3 different type of residential development

Literature Review
•Principle and
procedure of SWMM
(storm water
management Model)
• Principle and procedure
of On site detention (OSD)
,the flow attenuation of
OSD
•The principle of control
at source for water
quantity control
Identify problem

Data collection
•Layout and number
of terraced house
•Layout and lot size for
semi D house/
bungalow
•The layout of
drainage for the
development
•The size and
number of OSD
Modeling and
analysis
•Layout of
drainage and
OSD
•Model of on site detention (OSD) of
different development (terraced, semi
D and bungalow) using SWMM
•Assesment of flow
attenuation of OSD
(On site detention )
•Design rainfall for
10 year Average
Recurrence
Interval (ARI)

Expected outcome
 SWMM model of On Site Detention(OSD) for different
residential development.
 Establish the flow attenuation for different size of OSD.
 The size of OSD for different development for particular
flow attenuation.

Benefits project to Civil Engineering
 Application of stormwater management based on control at
source which is sustainable approach to mitigate flooding.
 Provide the potential and benefit of SWMM as a tool for
planning and design OSD.
 The study were generate the size of OSD for different
residential development.

References
 AMEC Environment and Infrastructure a division of AMEC
Americas Limited.(2013), Innovative Stormwater Source Control
Policy For Industrial, Commercial and Institutional Land Uses.
 Donald I.P , Bruce W.B (2006) , On Site Stormwater Detention
“The Swinburne Method”.
 Government of Malaysia Department of Irrigation and
Drainage.(2000),Urban Storm Water Management for
Malaysia, Volome 7.

References
 Lewis, A.R .(2010), Storm Water Management Model.
 N.C Department of transportation (2006) , Stormwater and you
 Stormwater management manual ( 2008).

�ݺ�ߣ

OSD using SWMM...

Recommended

More Related Content

What's hot (20)

Similar to OSD using SWMM... (20)

OSD using SWMM...