Column Base Plate Grout Chamfer
Column Base Plate Grout Chamfer
(OP)
The column base plate grout usually needs to be chamfered 45-degree around the edges.
When does the guy on site do the chamfering? (The forms for the grouting have chamfer strips? or the edges of the grout chamfered after the forms removed?)
What kind of tool does the guy on site use in chamfering?
Thanks.
When does the guy on site do the chamfering? (The forms for the grouting have chamfer strips? or the edges of the grout chamfered after the forms removed?)
What kind of tool does the guy on site use in chamfering?
Thanks.





RE: Column Base Plate Grout Chamfer
1. The edge of the grout even with the edge of the base plate on 3 sides, as they set their forms tight to 3 sides, then left a small gap on the fourth to pour in the grout.
2. They form up around the base plate leaving a gap all around at least as wide as the depth of teh grout, then they pour the grout flat over the entire formed area, up to at least the bottom of the base plate. That way, the chamfer angle is "included" in the grout cross-section. This is my preferred construction method, except I usually tell them to go at least 1/4" up above the bottom of the plate, just to be sure they have full bearing.
I have very rarely seen actually chamfered grout pads.
RE: Column Base Plate Grout Chamfer
RE: Column Base Plate Grout Chamfer
RE: Column Base Plate Grout Chamfer
Thanks for your replies.
As you say,you have very rarely seen actually chamfered grout pads,and you pointed out in the next reply, "If it were not chamfered away from the plate, then the edges of the grout could easily crack due to be unconfined."
The question: Have you seen cracked unchamfered edges of the grout very often since chamfered grout pads rarely seen?
Thanks a again.
RE: Column Base Plate Grout Chamfer
When I have seen them pour tight to the edge of the plate, yes I have seen some damaged edges of the grout pad. So this will lead to partial bearing (albeit almost full bearing) of the base plate. If the plate has very high overturning moments, this could lead to crushing of the grout at the edge of the plate. Which would lead to less bearing, which could lead to more crushing, etc....
Some of the problem is mitigated if the base plate and bottom of column is encased in concrete, as this will help fill any voids, and also help confine the grout pad. But if the column base is exposed, like in pre-engineered metal building, then a problem could occur. Though, the most times I have seen actually chamfered grout pad is in PEMB.
RE: Column Base Plate Grout Chamfer
RE: Column Base Plate Grout Chamfer
RE: Column Base Plate Grout Chamfer
Please see the attached file.
File's link is: http
Shoulder edges(as you usually do)would lead to crack.
Please comment on this.
RE: Column Base Plate Grout Chamfer
RE: Column Base Plate Grout Chamfer
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