manhole detail and drawing???

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anbm

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TX
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Designer
We (electrical designers) are working on a design with civil folks, and they are asking us to provide a manhole detail drawing…
I never heard or knew electrical has to design or draw manhole, need some advises here.
 
The electrical side must supply the required sizes and raceway layouts, then the civil side can design the actual structure.
 
anbm said:
We (electrical designers) are working on a design with civil folks, and they are asking us to provide a manhole detail drawing…
I never heard or knew electrical has to design or draw manhole, need some advises here.
Click to expand...
I had this happen once on a project in an earthquake zone. We just had the PE that was doing the electrical construction drawings add it to their drawings. It was not a big deal for them 30 some years ago, so I imagine it could be done today as well.
 
I've never worked with a civil engineer that knew how to size one. We design them ourselves when we need them. There's lots of details you can steel acquire on the interwebs. I know some of the precast concrete manufacturers have handy product info on their web pages.
 
JoeStillman said:
I've never worked with a civil engineer that knew how to size one. We design them ourselves when we need them. There's lots of details you can steel acquire on the interwebs. I know some of the precast concrete manufacturers have handy product info on their web pages.
Click to expand...
The PE firm had EEs that worked on the system. They had drawings of all the trapezes that held up the conduits, the wall penetrations, on UG services, so it was not real hard for them to add the UG electrical stuff. The city where it was going had some pretty strict earthquake rules and there had to be drawings of the structural details of just about everything.

We just farmed it out to a PE firm, as we had no one who knew anything about it.
 
JoeStillman said:
I've never worked with a civil engineer that knew how to size one. We design them ourselves when we need them. There's lots of details you can steel acquire on the interwebs. I know some of the precast concrete manufacturers have handy product info on their web pages.
Click to expand...
Do you have/know website address?
 
don_resqcapt19 said:
The electrical side must supply the required sizes and raceway layouts, then the civil side can design the actual structure.
Click to expand...
raceway layout? like duct bank? is there certain spacing requirement when conduit run in parallel?
 
The Electrical Physical Design will design the duct bank and manhole general arrangement [layout], since we know what cables are and from where to where they will run.
We have a list of manhole type ,also.
See the typical attached sketches.
 

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  • Cable Duct and Manholes Layout.jpg
    Cable Duct and Manholes Layout.jpg
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See attached standard ductbank and menhole [typical]
 

Attachments

  • Standard Duct bank and Manhole.jpg
    Standard Duct bank and Manhole.jpg
    81.8 KB · Views: 11
Julius Right said:
The Electrical Physical Design will design the duct bank and manhole general arrangement [layout], since we know what cables are and from where to where they will run.
We have a list of manhole type ,also.
See the typical attached sketches.
Click to expand...
can the manhole be square shape or has to be hexagon?
 
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