Rebar Spacing
Rebar Spacing
(OP)
I was just thinking about something I saw today and was wondering in my mind......
If a cast-in-place concrete retaining wall is designed to have #7 bars at 4" o.c. on the tension face as vertical reinforcing, does that meet the ACI criteria for bar spacing minimum?
The reason I ask is, if the wall is reinforced with vertical #7 hooked dowels, and is lapped with #7 vertical bars at 4", then the distance between sets of bars would be 4" minus (2)(7/8") which would be 2 1/4" clear.
As I recall, the spacing minimum is one bar diameter clear, or at least 1".
Is there any ACI provision requiring more spacing than this? I don't know of any, I was just thinking about it and wondering if there was.
I was just thinking about development length, splice lengths, and overlapping engagement of the concrete about each splice.
If a cast-in-place concrete retaining wall is designed to have #7 bars at 4" o.c. on the tension face as vertical reinforcing, does that meet the ACI criteria for bar spacing minimum?
The reason I ask is, if the wall is reinforced with vertical #7 hooked dowels, and is lapped with #7 vertical bars at 4", then the distance between sets of bars would be 4" minus (2)(7/8") which would be 2 1/4" clear.
As I recall, the spacing minimum is one bar diameter clear, or at least 1".
Is there any ACI provision requiring more spacing than this? I don't know of any, I was just thinking about it and wondering if there was.
I was just thinking about development length, splice lengths, and overlapping engagement of the concrete about each splice.






RE: Rebar Spacing
RE: Rebar Spacing
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Rebar Spacing
RE: Rebar Spacing
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RE: Rebar Spacing
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RE: Rebar Spacing