A concrete grade beam incorporates a full-width formed key located at the mid-depth of the footing, with the key dimensioned to one-third of the footing depth with a ten-inch maximum. Continuous grade beam reinforcing runs along the top and bottom with typical two-inch clearances. Reinforcing bars overlap with a typical Class B lap splice length. A zero-inch tolerance callout indicates flush alignment between adjoining concrete sections.
FTG. DEPTH 'D' 1 1/2" MIN. 0", TYP. FORMED KEY LOCATION AT MID-DEPTH OF FTG., FULL WIDTH GRADE BEAM REINFORCING (10" MAX.) 1/3 X 'D' TYP. CLASS B LAP TYP. 2" CLR.,
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