18-29-308.7 Anchorage.

   Anchorage shall be provided to restrain drainage piping from axial movement.

18-29-308.7.1 Location.

   For pipe sizes greater than 4 inches (100 mm), restraints shall be provided for drain pipes at all changes in direction and at all changes in diameter greater than two pipe sizes. Braces, blocks, rodding and other suitable methods as specified by coupling manufacturer shall be utilized.

18-29-308.8 Expansion joint fittings.

   Expansion joint fittings shall be used only where necessary to provide for expansion and contraction of the pipes. Expansion joint fittings shall be of the typical material suitable for use with the type of piping in which such fittings are installed.

18-29-308.8.1 Vertical expansion.

   In buildings more than 150 ft (45.75 m) in height, all vertical lines of piping shall be provided with swing sections or traverse joints or other device which shall absorb the strains or stresses due to the expansion and contraction or vibration of the vertical pipe lines.

18-29-308.9 Stacks.

   Bases of stacks shall be supported by concrete, brick laid in cement mortar, or metal brackets attached to the building or by other approved methods.

18-29-308.10 Parallel water distribution systems.

   Piping bundles for manifold systems shall be supported in accordance with Table 18-29-308.5. Support at changes in direction shall be in accordance with the manufacturer's instructions. Where hot water piping is bundled with cold water piping, hot water piping shall be insulated in accordance with Section 18-29-607.5.

(Amend Coun. J. 10-14-21, p. 37722, Art. III, § 18)

18-29-308.11 Thermal expansion tanks.

   A thermal expansion tank shall be supported in accordance with the manufacturer's instructions.

(Added Coun. J. 10-14-21, p. 37722, Art. III, § 19)