Expansion or Isolation Joints for concrete
Expansion or Isolation Joints for concrete
(OP)
Does anyone know where I can find specifications and/or details on expansion joints for concrete? I'm looking fo dimensions,placement, etc. If a code or standard exists, I need to reference it.





RE: Expansion or Isolation Joints for concrete
RE: Expansion or Isolation Joints for concrete
Expansion joints are rarely needed. Control joints are almost always needed. General rule of thumb is the joint spacing should be about 24 to 36 times the slab thickness (that will be in inches). Joints should be saw-cut to a depth of about 25 percent of the thickness and should be cut THE DAY OF PLACEMENT! If you wait until the next day, it's too late. Cut the joint as quickly as you can get the saw to cut without raveling the joint.