Sunday, July 28, 2013

The Time Base is T + T*K from the Time(T) and Storage (K) values for RDII in SWMM5


Note:  Each of the RDII UH's has a base time for the convolution of the RDII from each UH.  The Time Base is T + T*K from the Time(T) and Storage (K) values  used in the RTK data.  In this particular case:

·         The Fast UH has a time base of 22 hours,
·         The Medium UH has a time base of 430 hours, and
·         The Slow UH has a time base of 4212 hours.

If this is altered as in the  bottom image you can see the difference in the total  RDII I&I Flow

·         The Fast UH has a time base of 22 hours,
·         The Medium UH has a time base of 36 hours, and
·         The Slow UH has a time base of 52 hours.


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