Where are flow variation (or peak) factors applied in an extended state or dynamic sanitary sewer system model? For instance where would the Ten States Peaking Factors be Applied?: Should average daily dry weather flow loading values be multiplied by the peak factors, or should the diurnal use patterns reflect the large peak factors? (i.e. 4 x at the periods of heavy use). And do the peak factors reflect the inflow and infiltration component?
Hello Tim,
To the best of my knowledge, peaking factors / extreme flow factors (such as with the "ten states" method) are only meant for steady state simulations.
For an EPS (time varying) simulation, typically a diurnal pattern is used along with base loads at each manhole. The base load is often chosen to be the average daily load.
Someone else may be able to comment on the other items, but you can read much more about sanitary loading in chapter 6 of our Wastewater collection System Modeling and Design book.
Hope this helps.
Regards,
Jesse
Jesse DringoliTechnical Support Manager, OpenFlowsBentley Communities Site AdministratorBentley Systems, Inc.