How much is the standard gap for U-bolt and Grip-type U-bolt? Is this standard used for the whole pipe and is it can be changed?
Greetings Thang Ngo.
There is no standard for gaps between a u-bolt and the pipe. Sometimes the designer wants the gap to be very restrictive while other times the gap can be much looser. It all depends on stresses in the pipe. Can a support be tight or does the pipe need the ability to move? You, as the designer, must make decision, and use a pipe stress analysis application to evaluate if you made the correct decision or not.
Another possibility, design your support system based on equipment availability. Example, if the project had 12" pipe but can only get 16" U-bolts, then you must specify the gaps based on the difference.
In conclusion, best for you to know for perform a iterative study on gaps. Start assumption with large gaps and progressively reduce the gaps until the displacement and stress leaves meet you project requirements.
Regards, Mike Dattilio Design Analysis Engineering Group Senior Analyst Bentley Systems Inc=============================================================================
Answer Verified By: Mike Dattilio
yes, I understood your response. I am working on stress analysis for environment projects and there is sometimes discussion on the gap value support types, I often made as 0 1 1 1 in down up left right for U-bolt and 0 5 1 1 in down up left right for Grip type U-bolt respectively