Sleeves for Pipes passing through walls or ceilings.
Sleeves for Pipes passing through walls or ceilings.
(OP)
Pipe Sleeves that are two diameters bigger than pipe are provided during construction of walls to enable subsequent piping work without breaking or coring. The gaps or space between the sleeves and pipes are then closed with sealants suitable for fire or non fire rated walls. The fire rated expandable or other fire sealants usually become very hard after they dry. In other words they grip the pipe such that there does not appear to be left any flexibility to allow for pipe expansion, etc. So once the piping is done, why don't we simply plug the gaps between metal pipes and sleeves with mortar as that is ways cheaper than fire sealants.





RE: Sleeves for Pipes passing through walls or ceilings.
RE: Sleeves for Pipes passing through walls or ceilings.
RE: Sleeves for Pipes passing through walls or ceilings.
It takes many more hours of labor to pump concrete (plus board framing around the pipe) than using a foam injection. You will need concrete in liquid form to truly seal the space.
Non-rated walls with sleeves (for CMU walls) need sleeves to allow pipe insulation over the pipe through the wall.
Pipes should not be fixed to the structure the way you describe, they will transmit vibration from the pump to the building structure.
Read "Execution part" of green pages masterspecs. Piping installation procedures.
Sleeves are good, sleeves are our friends.
RE: Sleeves for Pipes passing through walls or ceilings.