An automatic sprinkler main riser penetrates a continuous concrete footing per the foundation plan, centered within a sixteen-inch diameter Sonotube sleeve for an eight-inch diameter sprinkler main. A two-inch minimum clearance is maintained all around unless noted otherwise, with dimensions verified in the field or against fire sprinkler drawings. Concrete fill matches the width of the footing below a cold joint, and finished grade sits at the farside with specified vertical clearances. Reinforcing includes two number five bars at four feet zero inches long within the pour strip and precast panel elements.
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