Shaft Conduits

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mstrlucky74

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NJ
Have to run (2) 4" conduit up shaft about 6 floors. Shaft is about 8'x10'. Thinking only way to do this is bosun chair and not scaffolding. Only access into is stairwell that has an access door about 4'x2'. Thanks.
 

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infinity said:
The fact that your opening is only 2'X4' your only choice will be a bosun chair. Can you even fit in 10' lengths of conduit into the shaft with such a small hole?
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yes we will be able to get conduit in. curious..install a lot slower in shaft and chair?

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mstrlucky74 said:
yes we will be able to get conduit in. curious..install a lot slower in shaft and chair?
Click to expand...

Well certainly slower than when you have access on every floor but two 4" runs 6 floors isn't a whole lot of conduit. DO you need to drill supports into the concrete? Drilling from a hanging chair or harness is challenging because it's hard to apply pressure to the drill unless there is something in front of you to tie off to.
 
infinity said:
Well certainly slower than when you have access on every floor but two 4" runs 6 floors isn't a whole lot of conduit. DO you need to drill supports into the concrete? Drilling from a hanging chair or harness is challenging because it's hard to apply pressure to the drill unless there is something in front of you to tie off to.
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dont know...it was hard for us to see clearly in shaft..

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mstrlucky74 said:
...install a lot slower in shaft and chair?
Click to expand...

Which conditions do you think this work falls under?

Normal Installation Conditions– When all of the conditions associated with the installation of an item will permit the maximum productivity of the electricians on a project

Difficult Installation Conditions– When one or more of the conditions associated with the installation of an item will permit less than maximum productivity of the electricians on a typical project

Very Difficult Installation Conditions– When one or more of the conditions associated with the installation of an item will permit substantially less than maximum productivity of the electricians on a typical project
 
What size conductors? There maybe an issue with 300.19.

As far as the labor, one step above very difficult conditions.
 
mstrlucky74 said:
Have to run (2) 4" conduit up shaft about 6 floors. Shaft is about 8'x10'. Thinking only way to do this is bosun chair and not scaffolding. Only access into is stairwell that has an access door about 4'x2'. Thanks.
Click to expand...

Confined space requirements?
 
follybeacher said:
Which conditions do you think this work falls under?

Normal Installation Conditions– When all of the conditions associated with the installation of an item will permit the maximum productivity of the electricians on a project

Difficult Installation Conditions– When one or more of the conditions associated with the installation of an item will permit less than maximum productivity of the electricians on a typical project

Very Difficult Installation Conditions– When one or more of the conditions associated with the installation of an item will permit substantially less than maximum productivity of the electricians on a typical project
Click to expand...
we were thinking very difficult.

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