MSMAware Computation

General Information


Location = Kuching, Sarawak

2P24  = 100

Type of Pre-development = Park Lawns and Meadows

Type of Post-development = Semi D houses (low density)

Area = 547 m²

Impervious = 43.14 % from total area

Pervious = 56.86 % from total area

Time constant, tc = 40 minutes

Time constant, tcs = 35 minutes

OSD design = Above-ground



Step 1: Start MSMAware. Select ‘One Site Detention’ tab.



Step 2:- Select MSMA1 and select “General” tab.





Step 3:-Enter the project time value for ‘tc’ and ‘tcs. Make sure the time is in ‘minutes’ units.





Step 4: Choose the design ARI for project storage.





Step 5: Enter the ‘impervious area’ and ‘pervious area’ for ‘pre’ and ‘post’ data. Make sure that the area is in ‘meter squared’ unit.





Step 6: Select the earth cover categories for ‘Pre’ and ‘Post’ development. If the C value is fixed, then choose true. Select ‘False’ if the C value is not fix value.

Step 7: Select the general type for the storage development.





Step 8: Select the type for ‘Town’ and ‘Location’ of the site project. Insert the value for 2P24.




For step 9 until 15 : please follow the steps shown in case study 1 for Kuala Lumpur








Back : Case Study 1         Next : Manual Calculation



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