Min. Clearances for Utility Crossings
Min. Clearances for Utility Crossings
(OP)
I'm involved in a project, where an engineer wants to install a new storm pipe in a nest of existing utilities. The new pipe would cross 6" above an existing duct bank (no idea how many volts it's carrying) and an existing water main, and it would cross 8" below an existing gas line.
I'm trying to find standards on the minimum allowable clearances for crossings. The NEC didn't seem to have anything regarding the ductbank (or maybe I missed it), and I'm not sure where else to look. Thanks!
I'm trying to find standards on the minimum allowable clearances for crossings. The NEC didn't seem to have anything regarding the ductbank (or maybe I missed it), and I'm not sure where else to look. Thanks!





RE: Min. Clearances for Utility Crossings
Dik
RE: Min. Clearances for Utility Crossings
Appreciate your help, and I agree that would be the best thing to do.
RE: Min. Clearances for Utility Crossings
RE: Min. Clearances for Utility Crossings
RE: Min. Clearances for Utility Crossings
Similarly, the clearances are likely set by the owner of the property on which the utilities run. Are these public or private?
RE: Min. Clearances for Utility Crossings
RE: Min. Clearances for Utility Crossings
RE: Min. Clearances for Utility Crossings
Crossings with electric cables, underground or overhead, need to be as near perpendicular as possible and should never run parallel in close proximity.
Check in with your state's ONE CALL SYSTEM before beginning excavation work near any pipeline ... or buired electric cable.
Gas companies normally will require their rep/inspector to be present during any excavation near their pipelines. Convince them that it's an emergency.
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RE: Min. Clearances for Utility Crossings
RE: Min. Clearances for Utility Crossings
RE: Min. Clearances for Utility Crossings
Have you considered using elliptical pipe, or 2 smaller pipes to get you the clearance you need? If thick walled reinforced concrete pipe is being used, could you use PVC instead? That could get you upwards of four additional inches of clearance, top and bottom.
RE: Min. Clearances for Utility Crossings
http://www.oconomowoc-wi.gov/DocumentCenter/View/3...
RE: Min. Clearances for Utility Crossings
https://www.swgas.com/1409181734392/Excavator-Book...
12 inch minimum separation between wet and dry utilities in Phoenix (page 7)
https://www.phoenix.gov/streetssite/Documents/1075...
RE: Min. Clearances for Utility Crossings
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com
RE: Min. Clearances for Utility Crossings
Technology is stealing American jobs. Stop visas for robots.