paramerters for the structural design of 33KV duct bank under roads?
paramerters for the structural design of 33KV duct bank under roads?
(OP)
I am interested in the design parameters for the design of an 33KV duct bank under a main road. An example of an actual design will help.






RE: paramerters for the structural design of 33KV duct bank under roads?
2. Schedule 40 galvanized steel conduit spaced using available commercial plastic conduit spacers manufactured for this purpose.
3. 3000 psi concrete (properly formed, placed, vibrated & cured) with the top of concrete painted or stained red (any future excavation will show the red colored concrete and warn that this is a ductbank).
4. Heavy electrical grounding cable (typically 500MCM) running (loosely) on top of the concrete - frequent electrical connections to ground rods. Test for adequate grounding.
5. Backfill with select, well compacted soil.
6. Accurately label and show location of ductbank on as-built drawings.
RE: paramerters for the structural design of 33KV duct bank under roads?
RE: paramerters for the structural design of 33KV duct bank under roads?
RE: paramerters for the structural design of 33KV duct bank under roads?
RE: paramerters for the structural design of 33KV duct bank under roads?
Carlon conduit (216-464-3400) has a publication for direct buried conduit. It does not take much cover over a direct buried conduit.
Remember to watch your fill factor. A spare conduit is cheap to install the first time, but very expensive after the fact.