The automatic sprinkler main riser penetrates a continuous concrete footing with a minimum two-inch clearance all around unless noted otherwise. A Sonotube forms the opening for the sprinkler main through the continuous footing, which features a cold joint and concrete fill matching the footing width. A precast panel with two number five reinforcing bars at four feet zero inches spans above with a pour strip and a grid reference. Dimensions require verification in the field and coordination with fire sprinkler drawings.
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