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Wall Horiz Rebar--Top or Other Bars??

Wall Horiz Rebar--Top or Other Bars??

Wall Horiz Rebar--Top or Other Bars??

(OP)
In the past I have provided Class "B" laps in reinforcing for wall horizontals as required by "Other Bars" per ACI 318 in lieu of "Top Bars".  I can't find the reference that makes this acceptable (something like this comes to mind) "horizontal bars in walls need not be considered top bars".  Used to have it, but now I can't find it.  Can any help with a reference?

RE: Wall Horiz Rebar--Top or Other Bars??

The definition of a top bar is any horizontal bar with more than 12" of fresh concrete below it.  Based on that I have always considered horizontal wall bars as top bars.

I don't recall a wall bar exclusion.

RE: Wall Horiz Rebar--Top or Other Bars??

The reason for the requirement is to provide for settlement of the concrete under the bar, hence loss of bond strength.  Concrete settles in a wall just as it does in any other element so there is no valid reason for an exclusion.

BA

RE: Wall Horiz Rebar--Top or Other Bars??

I agree with JAE.

RE: Wall Horiz Rebar--Top or Other Bars??

So do I.

BA

RE: Wall Horiz Rebar--Top or Other Bars??

And I'll wager his dog agrees too! (private joke).

BA

RE: Wall Horiz Rebar--Top or Other Bars??

woof

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