flat area hgl
flat area hgl
(OP)
I am working in a flat topographical area. Our pipes are allowed to surcharge provided that the HGL doesnt reach the street. What type of factor of safety should I use if any. I am already designing for the 25 year storm and I am using the SCS method (conservative( to size the pipes. Thanks.





RE: flat area hgl
RE: flat area hgl
RE: flat area hgl
RE: flat area hgl
RE: flat area hgl
RE: flat area hgl
RE: flat area hgl
i guess i could design for the 50 as a safety but that seems excessive for a residential development
RE: flat area hgl
RE: flat area hgl
RE: flat area hgl
RE: flat area hgl
Also, I don't know the exact reason behind it, but I've been told that the Rational Formula produces higher runoff values say SCS, etc.
RE: flat area hgl
RE: flat area hgl
But watch out if you are connecting the basement drains to storm, here in Canada we have three pipe system(Storm, Sanitary &FDC) , we use third pipe(FDC) to basement drains and it has no connection with the storm and outlets in creeks or natural water courses or sometimes in the Bypass line of Storm system.
zarar
RE: flat area hgl
RE: flat area hgl
It all depends on your local requirements.