18-29-307.1  General.

 In the process of installing or repairing any part of aplumbing and drainage installation, the finished floors, walls, ceilings, tile work or any other part of the building or premises that must be changed orreplaced shall be left in a safe structural condition and shall maintain required fire resistance in accordance with the requirements of the building code.

18-29-307.2 Cutting, notching or boring of holes.

A framing member shall not be cut, notched or bored in excess of limitations specified in the building code.

18-29-307.3 Penetrations of floor-ceiling assemblies and fire-resistance-rated assemblies.

Penetrations of floor-ceiling assemblies and assemblies required to have a fire-resistance rating shall be protected in accordance with Chapter 15-8.

18-29-307.4 Trench location.

Trenches installed parallel to footings shall not extendbelow the 45-degree (0.79 rad) bearing plane of the footing or wall.