18-29-306.3 Backfilling.

   Backfill shall be free from discarded construction material and debris. Loose earth, free from rocks, broken concrete, frozen chunks and other rubble, shall be placed in the trench in 6-inch (150 mm) layers and tamped in place until the crown of the pipe is covered by 12 inches (305 mm) of tamped earth. The backfill under and beside the pipe shall be compacted for pipe support. Backfill shall be brought up evenly on both sides of the pipe so that the pipe remains aligned. In instances where the manufacturer's installation instructions are more restrictive than those prescribed by this chapter, the material shall be installed in accordance with the more restrictive requirement.

(Amend Coun. J. 10-14-21, p. 37722, Art. III, § 10)

18-29-306.4 Tunneling.

   Where pipe is to be installed by tunneling, jacking or a combination of both, the pipe shall be protected from damage during installation and from subsequent uneven loading. Where earth tunnels are used, adequate supporting structures shall be provided to prevent future settling or caving.

18-29-306.5 Reserved.

Editor's note – Coun. J. 10-14-21, p. 37722, Art. III, § 11, repealed § 18-29-306.5, which pertained to violations – penalties.

18-29-307 Structural Safety.

18-29-307.1 General.

   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.

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 the Chicago Building Code.

(Amend Coun. J. 4-10-19, p. 100029, Art. XVI, § 7; Amend Coun. J. 10-14-21, p. 37722, Art. III, § 12)

18-29-307.4 Protection of footings.

   Trenching installed parallel to footings shall not extend into the bearing plane of a footing or wall. The upper boundary of the bearing plane is a line that extends downward, at an angle of 45 degrees (0.79 rad) from horizontal, from the outside bottom edge of the footing or wall.

(Amend Coun. J. 10-14-21, p. 37722, Art. III, § 13)

18-29-307.5 Alterations to trusses.

   Truss members and components shall not be cut, drilled, notched, spliced or otherwise altered in any way without written approval of a registered design professional. Alterations resulting in the addition of loads to any member (such as HVAC equipment and water heaters) shall not be made without verification by a registered design professional that the truss is capable of supporting such additional loading.

(Added Coun. J. 10-14-21, p. 37722, Art. III, § 14)