Is there a way to estimate weight on a trapeze

[82angelfan]

In an OSHPD job I added a 1" pipe to a trapeze in an electrical room. my inspector is telling me I can never add to a trapeze, as we are now overloading the weight of the trapeze. Is there a way to estimate the weight to show inspector the trapeze is still below maximum?

example: B-Line strut on 1/2" steel rod in concrete Robinson deck.

I found a section on seismic drawing saying 1/2" rod is rated at 808 pounds, and I found a chart showing 1" EMT is 1.6 pounds per foot with #6 wire in it, Is there a quick calculation I can do with that information?

 

[LarryFine]

I would ask how he knows what the load was, what the capacity was, and that it's now overloaded.

 

[82angelfan]

I would ask how he knows what the load was, what the capacity was, and that it's now overloaded.

It doesn't work like that on OSHPD. The IOR needs to assume the seismic rack is at maximum capacity per design.

 

[norcal]

I would ask how he knows what the load was, what the capacity was, and that it's now overloaded.

OSHPD has a unique ability to turn a grain of sand into Mt. Everest, they live in their own world also.