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Re: RE:ACI Code and single layer steel in 12" wall

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Think cracking.
With rebars at mid-thickness, cracks at the tension (earth-retaining) face may cause long-term problems.  
With 12" thickness, I would place one two-way layer of rebars at the retaining face, and a minimum of #4@18" B.W. at the exposed edge to limit visible cracking.
Steve Gordin
----- Original Message -----
Sent: Thursday, November 04, 2004 7:33 PM
Subject: RE:ACI Code and single layer steel in 12" wall

Any advice on designing a 12" thick  retaining wall, 6' high and how it may conform with ACI Code (pretty sure they require two layers for 10" and thicker.)  Structurally it works, but don't know how to address code issue of two layers.  I want only one layer of steel at centerline of wall.
Chic Gilligan, PE