Reinforced electric duct bank
Reinforced electric duct bank
(OP)
Went is an electric duct bank is recommended to be reinforced.
We understand that 3 ft below grade from the top of a concrete encased duct bank, heavy load in the surface will be distributed around the earth that minimize the impact on the duct bank assembly.
Any suggestion?
We understand that 3 ft below grade from the top of a concrete encased duct bank, heavy load in the surface will be distributed around the earth that minimize the impact on the duct bank assembly.
Any suggestion?






RE: Reinforced electric duct bank
See-for instance:
Pressure Reduction on Wide Culvert
http://surface.syr.edu/cgi/viewcontent.cgi?article...
and
EXPERIMENTAL AND NUMERICAL ANALYSIS OF A PIPE ARCH CULVERT SUBJECTED TO EXCEPTIONAL LIVE LOAD
https://etd.ohiolink.edu/rws_etd/document/get/ohio...
The transfer of stresses in a multi-component support system is known as arching. In the case where the buried structure is more rigid than the adjacent soil, arching will be defined as negative arching, where the structure will be exposed to greater pressures relative to the calculated “free-field” pressures from the sum of overburden pressures alone.
RE: Reinforced electric duct bank
RE: Reinforced electric duct bank
We had a case where a sewer contractor excavated a wide trench under a concrete duct bank without providing structural support. Eventually the duct bank cracked and required replacing all of the cables in the duct bank. I don't know the reinforcing details of the duct bank, but clearly the contractor overestimated the strength.