Apprentice question
Stop and ask
Stop. Get direction before you touch it.
Fire damper retaining angles and sleeve details must match the listed installation. Do not pin the damper assembly in a bind; verify the approved clearance/angle detail before fastening.
['You are pre-attaching the retaining angles to a fire damper sleeve on the ground. You drive your zip screws straight through the angle steel and into the sleeve, but forget to leave the code-mandated frac{1}{8}\\text{-inch} thermal expansion clearance gap.', 'Fire damper retaining angles and sleeve details must match the listed installation. Do not pin the damper assembly in a bind; verify the approved clearance/angle detail before fastening. The likely recovery is to check the condition, correct prep/setup if it is within your assignment, and bring the foreman clean information before the work creates rework overhead.']