Pipe shall be supported in accordance with Table 18-29-308.5.
Piping Material | Maximum Horizontal Spacing (feet) | Maximum Vertical Spacing (feet) |
Cast-iron pipe | 5 a | 15 |
Copper or copper-alloy pipe | 12 | 10 |
Copper or copper-alloy tubing, 1 1/4-inch diameter and smaller | 6 | 10 |
Copper or copper-alloy tubing, 1 1/2-inch diameter and larger | 10 | 10 |
Polyvinyl chloride (PVC) pipe | 4 | 10 b |
Stainless steel drainage systems | 10 | 10 b |
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.
a. The maximum horizontal spacing of cast-iron pipe hangers shall be increased to 10 feet where 10-foot lengths of pipe are installed.
b. For sizes 2 inches and smaller, a guide shall be installed midway between required vertical supports. Such guides shall prevent pipe movement in a direction perpendicular to the axis of the pipe.
(Amend Coun. J. 3-27-02, p. 82090, § 3; Amend Coun. J. 10-14-21, p. 37722, Art. III, § 17)