Duct is installed in a pool, natatorium, or corrosive environment
Stop and verify the material schedule before installing or covering duct supports in corrosive areas. Pool rooms, natatoriums, chemical rooms, coastal air, and wet exhaust areas can attack duct, rods, straps, clamps, screws, nuts, bolts, washers, and anchors.
Stop if Ask when the area has pool chemicals, chloramines, high humidity, corrosion, mixed metals, or any overhead duct support that looks compromised. Watch out Do not use random zinc, galvanized, plain steel, aluminum, or stainless hardware in a corrosive area without verifying the specified material system. Check Identify the environment Check drawings/specs/submittals for duct and support material Verify hanger rod, strap, clamp, anchor, screw, nut, bolt, washer, and coating/isolation requirements Photograph rust, pitting, staining, white powder, failed coating, or loose hardware Ask before substituting hardware. Steps Identify the environment Check drawings/specs/submittals for duct and support material Verify hanger rod, strap, clamp, anchor, screw, nut, bolt, washer, and coating/isolation requirements Photograph rust, pitting, staining, white powder, failed coating, or loose hardware Ask before substituting hardware. Say this to your foreman This area looks corrosion-sensitive. What duct, hanger, rod, anchor, screw, nut, bolt, washer, coating, and isolation material are required here?
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