Design of Pipe with Minimal Cover
Design of Pipe with Minimal Cover
(OP)
Hello -
I have a project where I need to get the stormwater to an existing manhole. To do so, we have a pumping station with a force main. The problem is that there are two 54" combined sewer pipes to cross, and a 20" water main which goes under those two pipes. Either we have to go under EVERYTHING (about 16' below grade) or over everything!
At this point, over seems the most feasible. The limiting crossing is a 16" gas line with approximately 2' of cover above it. This is all within a roadway as well.
I have been scouring the internet for information on different types of pipe and the minimum cover. What I would love to hear is a type of 6" pipe that will only need 6-9" of cover, even for a road way...
I would like to know the minimum covers for various materials for 6" pipes that other engineers have used in the past, or links to detailed info on the net regarding the same.
If you need any more info regarding this specific project, let me know! Thanks!
I have a project where I need to get the stormwater to an existing manhole. To do so, we have a pumping station with a force main. The problem is that there are two 54" combined sewer pipes to cross, and a 20" water main which goes under those two pipes. Either we have to go under EVERYTHING (about 16' below grade) or over everything!
At this point, over seems the most feasible. The limiting crossing is a 16" gas line with approximately 2' of cover above it. This is all within a roadway as well.
I have been scouring the internet for information on different types of pipe and the minimum cover. What I would love to hear is a type of 6" pipe that will only need 6-9" of cover, even for a road way...
I would like to know the minimum covers for various materials for 6" pipes that other engineers have used in the past, or links to detailed info on the net regarding the same.
If you need any more info regarding this specific project, let me know! Thanks!





RE: Design of Pipe with Minimal Cover
RE: Design of Pipe with Minimal Cover
RE: Design of Pipe with Minimal Cover
On a related note: What is the minimum distance needed between the storm force main and the gas, if the storm goes over the gas?? Can the storm sit on the gas if concrete is placed around it?
Of course under everything would be best, and after more examination it does appear that it may be feasible, but everything is still a very tight squeeze!
Thanks!
Kate
RE: Design of Pipe with Minimal Cover
RE: Design of Pipe with Minimal Cover
We're about to send the plans to the MUA for review and comment, and we will discuss various options with them.
Thanks!
RE: Design of Pipe with Minimal Cover
RE: Design of Pipe with Minimal Cover
KRS Services
www.krs-services.com
RE: Design of Pipe with Minimal Cover
RE: Design of Pipe with Minimal Cover
Clifford H Laubstein
FL Certified PE #58662