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In the process of installing or repairing any part of a plumbing and drainage installation, the finished floors, walls, ceilings, tile work or any other part of the building or premises that must be changed or replaced shall be left in a safe structural condition and shall maintain required fire resistance in accordance with the requirements of the building code.
Penetrations of floor-ceiling assemblies and assemblies required to have a fire-resistance rating shall be protected in accordance with Chapter 15-8.
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