MSMAware Computation

 
 
This column, explain details on steps by steps of OSD computation using MSMAware software.

 

Step 1:- Start your MSMAware software.

 

Step 2:- Select On Site Detention tab.

 

Step 3:- Select ESM tab.

 

Step 4:- Select General tab.

 

Step 5:- Insert the value for ‘tc’ and ‘tcs’. Make sure the change time values in minutes unit.

 

Step 6:- Insert the value for time ‘start’ , ‘end’ and ‘step’.

 

Step 7:- Choose the suitable ARI required to design the OSD storage.

 

Step 8:- Insert the area for ‘impervious and pervious data for ‘pre’ and ‘post’ development.

 

Step 9:- Select the earth cover categories for ‘pervious’ and ‘impervious’ area. If the ‘C’ value is fix, choose true. It not, choose false.

 

Step 10:- Select the suitable type for OSD design.

 

Step 11:- Select ‘state’ and ‘station’ for your site project.

 

Step 12:- Select ‘outlet’ tab.

 

Step 13:- Insert the orifice parameter for ‘cd’ and ‘ho’ value in primary outlet.

 

Step 14:- Insert the value of ‘head over weir’, ‘free board’ and ‘Cbcw’ for secondary outlet -weir.

 

Step 15:- Click ‘Run’ button.

 

Step 16:- The result will be shown in ‘calculation’ tab. The orifice size and weir will be automatically calculated for you.

 

Step 17:- Click ‘ESM‘ to get full ESM, OSD MSMAware report.


 
 

Editor: Dilah – 6 Feb 14

 
 

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