Rgs mechanical injury

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mkgrady

Senior Member
Location
Massachusetts
I would not assume all areas of a mechanical room would subject conduit to damage. There may be places in the room or in other parts of the job where conduit is subject to damage. If you can take a position as to where those areas are you could reasonably interpret that the whole mechanical room is not it. A typical example of where physical damage would occur would be a loading dock....another would be where conduit stubs up through a concret floor.
 

BJ Conner

Senior Member
Location
97006
It's not you that makes the call

It's not you that makes the call

If a spec read RGS where subject to mechanical injury would you interpret that as RGS in all mechanical rooms?

It's a spec that is full of opportunity to get it wrong. IF you make the call and the owner or the owner rep disagrease it will lead to an argument and even if you win they will be pissed.
If you going to run EMT get their approval ahead of time and document where and what logic you used.
For example it could be something like "everything above 8' in elevation" Or Every thing above the pump removal monorail" Etc.
A lot of EMT while it would be good after it's all done won't make it throug construction, fitters, painter, carpenters etc all like to stand on it or other wise damage it.
Show the owner or his rep your trying to save you both some money. ;)
 
If a spec read RGS where subject to mechanical injury would you interpret that as RGS in all mechanical rooms?

The intent of the statement is to protect the wiring in areas where mechanical injury is likely to occur as the result of the normal activity in the area. Example; in a machine shop were material is moved around on carts and the carts can accidentally bump into the wiring would be considered a potential for mechanical injury. There are no set parameters around these statements, nor do they address the degree of force that can be expected. Obviously a 2 ton fork-truck can easily crush a RigidGalvanizedSteel Conduit.
 

GUNNING

Senior Member
Get clarification.

Get clarification.

If you don't like the GRS, for any reason you want, get them to sign a change order or add a clarification addendum.

Personally I think anything below say 5 feet out of the slab should be covered. Its the architects/engineers call.
 
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