separate the steel support and the steel pipe

[MrBoom]

Hi All,
Please can you help me:do we need separate the steel support and steel pipe? I knew that we don't need, but can't find any standard or specification to root my thought :(

[Brian_UK]

Mr Boom, we can use rubber type or wooden block type.

This website link is to a UK site but hopefully something similar is near to you.

http://www.crestabuildingproducts.com/products/

Click on pipe support,