Sleeves for Embedded Railing Posts
Sleeves for Embedded Railing Posts
(OP)
Our handrail & railings spec indicates that the when railing posts are to be anchored into the stair concrete itself, that posts are to be anchored with core-drilled holes or pre-set sleeves of diameter at least 3/4" more than the diameter of the post being anchored, not less than 5" deep. Fill space around post with non-shrink, non-metallic grout or anchoring cement."
My questions is that I would usually specify steel sleeves at this location but the contractor has PVC sleeves on site. Are there any concerns with the bonding of the grout to the PVC sleeve or the PVC sleeve to the base concrete that I should be aware of?
My questions is that I would usually specify steel sleeves at this location but the contractor has PVC sleeves on site. Are there any concerns with the bonding of the grout to the PVC sleeve or the PVC sleeve to the base concrete that I should be aware of?






RE: Sleeves for Embedded Railing Posts
RE: Sleeves for Embedded Railing Posts
I agree with SEIT...could be a crushing/deformation issue with the PVC as well.
RE: Sleeves for Embedded Railing Posts
RE: Sleeves for Embedded Railing Posts
Be careful with the grout. I recently investigated a case where the grout expanded enough to crack the surrounding concrete. Seems the contractor's choice was a rapid-setting grout containing gypsum, which was poured short of the top and finished later with a different grout that was a better color match to the concrete.
Ralph
Structures Consulting
Northeast USA