pipe slope
pipe slope
(OP)
The last pipe in my proposed storm sewer network discharges into a detention pond. The pipe is 75' long, at a slope of 18% and discharges into the pond at a velocity of 8 fps. IS this too steep to construct? Will erosion be a problem? Would I be better off making a deep manhole and entering the pond at gentler slope? I can not lift the outlet end of the pipe because of HGL concerns. Thanks for the help.
RE: pipe slope
The anchoring requirements may depend on the type of soil. The geotech for the pond may be able to provide information on this. Although, at 18% I don't think that should be a big major concern.
Will this pipe have an anti-seep collar? That would provide some anchorage as well.