drquek
07-01-2009, 12:32 PM
<o:smarttagtype namespaceuri="urn:schemas-microsoft-com<img src=" images="" smilies="" redface.gif="" border="0" alt="" title="Embarrassment" smilieid="2" class="inlineimg">2.4 Worked Example 2.2
Design OSD for a factory site in Ipoh.
Total area is 50228 m2.
Assume that 25% of the surface area is impervious and the rest pervious.
The times of concentration are as follows:
tc= 12 min (factory site outlet)
tcs= 6 min (roof and property drainage)
</o:smarttagtype>
Design OSD for a factory site in Ipoh.
Total area is 50228 m2.
Assume that 25% of the surface area is impervious and the rest pervious.
The times of concentration are as follows:
tc= 12 min (factory site outlet)
tcs= 6 min (roof and property drainage)
</o:smarttagtype>