I NEED TO DETAIN ABOUT 12 CFS WITHIN A SUBSURFACE PIPE SYSTEM.
I NEED TO DETAIN ABOUT 12 CFS WITHIN A SUBSURFACE PIPE SYSTEM.
(OP)
How do I calculate the storage volume required if I have:
a. my impact, in cubic feet per second, to the site due to development
b. my proposed hydrograph
I NEED TO DETAIN ABOUT 12 CFS WITHIN A SUBSURFACE PIPE SYSTEM. I'm just not sure which time I need to compare that rate to in order to calculate the storage volume necessary.
Thx in advance.
a. my impact, in cubic feet per second, to the site due to development
b. my proposed hydrograph
I NEED TO DETAIN ABOUT 12 CFS WITHIN A SUBSURFACE PIPE SYSTEM. I'm just not sure which time I need to compare that rate to in order to calculate the storage volume necessary.
Thx in advance.





RE: I NEED TO DETAIN ABOUT 12 CFS WITHIN A SUBSURFACE PIPE SYSTEM.
RE: I NEED TO DETAIN ABOUT 12 CFS WITHIN A SUBSURFACE PIPE SYSTEM.
RE: I NEED TO DETAIN ABOUT 12 CFS WITHIN A SUBSURFACE PIPE SYSTEM.
For a particular portion of the development, I have 13.596 cfs within a pipe. I'd like to decrease this flowrate to about 1.50 cfs before outfall. I have about 10,000 sf to work with under the parking lot, but also know that area will be less due to pipe spacing for adequate compaction.
My peak flow time is at 12.403 min (corresponding to the 13.596 cfs) with a flow end time of 61.449 mins.
RE: I NEED TO DETAIN ABOUT 12 CFS WITHIN A SUBSURFACE PIPE SYSTEM.
RE: I NEED TO DETAIN ABOUT 12 CFS WITHIN A SUBSURFACE PIPE SYSTEM.
Pick an outlet control that gives you your target discharge at your target head. I suggest an orifice.
Generate a stage-discharge relationship from your chosen outlet control.
Lay out a sample pipe system.
Generate a stage-storage relationship for your pipe system.
Derive a Storage-Indication Curve, like they taught you in hydrology class. (you have had that, right? if not go back to school for a semester, or buy a textbook and teach yourself)
Use the SIC to route the inflow hydrograph through the facility.
See if it pegs out the facility. If so, add more pipes and recalc your stage-storage relationship.
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com