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Re: conc retaining walls/ bolts in CMU

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At 10:24 AM 11/8/2004 -0500, you wrote:

Concrete retaining walls:

To clarify, the 2/3 and 1/3 distribution is of the HORIZONTAL rebar for temp and shrinkage, the vertical bar spacing on the tension side is determined by design.

"This scenario definitely wouldn't meet the chpt 14 provisions, with 80% of the vertical reinforcement (>2/3 total, 14.3.4a) on the soil side and 48" spacing (>18" max o/c, 14.3.5) on the sunny side. Of course, with no vertical loads, this layout would be just fine."


Which part of "14.3.4 One layer consisting of not less than one-half nor more than two-thirds of total reinforcement required for each direction..." would imply that only the horizontal reinforcement is subject to the distribution rules.  While I'll agree that it may sound a bit over the top to have to beef up the non-working side of the wall, the provisions - as written - do not apply to minimum steel, but to "total reinforcement."  (If this has changed in the last iteration or two, my apologies, as I'm still using and older 318 book).

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