Tolerance between a pipe and grating

[Deeso]

Good Day

I got a client who is complain that the grating is installed too close to the pipe, but I can not find anything in the spec or code regarding the tolerance. Does anybody know what is the acceptable distance?

Kind Regards
Denver

 

[LittleInch]

0.1mm between the outer edge of the pipe and the bottom of the grating when the stoutest of your fellow workers walks on top of it ( an adaption of the FGT - "Fat Guy Test").

Tell your client it passes the FGT and let him or her work it out.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[Deeso]

Thanks for your response, but would you perhaps have any reference to a code or standard that prescribes this?

 

[LittleInch]

Codes and standards tell you how to do things.

This doesn't cover every single situation, nor should it. Things like this they leave to Engineering Judgement.

In this case I would simply state your minimum clearance and say based on the worst case operating loads and deflections, there is clearance between the pipe and the grating.

Let the client come back to you and state in code XYZ it states..... Won't happen.

They might have a guidance or their own specification, but this sort of thing is not mandated by code.

Ps - don't double post - it's not allowed.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[JLNJ]

If it's a cold pipe which is going to get hot and move around, then maybe more clearance is needed.

Or maybe the was a dimension on the plans and the actual opening in the field is not within tolerance to the given dimension.

Or maybe the insulator can't get in there and do his job if the gap is too small.

Or maybe the toe plate can't be put on if the opening is too close to the pipe.

Or maybe it's an issue with the pipe fitter, and the opening in the grating is spot on.

As LittleInch says, these are not code-mandated items. Use your judgment.

 

[TLHS]

Check to make sure the client didn't have a spec you should be following. Most midsized or larger industrial clients or institutional clients would have some sort of spacing requirement.

 

[Deeso]

Thanks very much for the advise again