1327.6 Maximum Plastic Pipe Support Spacing — 2025 California Plumbing Code

California Plumbing Code (Title 24, Part 5) · 2025 edition · updated 2026-09-25 · California

CBSC: official editions, supplements and errata

Italicized text is a California amendment to the model code, as printed in the official publication.

Cite as: 2025 California Plumbing Code (Title 24, Part 5) § 1327.6 · Effective January 1, 2026 · Official source: Building Standards Commission

The maximum support spacing for plastic pipe shall be in accordance with Table 1327.6. [NFPA 99:15.4.5.6.6]

TABLE 1327.6

MAXIMUM PLASTIC PIPE SUPPORT SPACING

[NFPA 99: TABLE 15.4.5.6.6]

PIPE SIZE			HANGER SPACING (feet)
DN15	(NPS1⁄2)	(5⁄8 of an inch O.D.)	4
DN20	(NPS3⁄4)	(7⁄8 of an inch O.D.)	4
DN25	(NPS 1)	(11⁄8 of an inch O.D.)	4.33
DN32	(NPS 11⁄4)	(13⁄8 of an inch O.D.)	4.33
DN40	(NPS 11⁄8)	(15⁄8 of an inch O.D.)	4.66
DN50	(NPS 2)	(23⁄8 of an inch O.D.)	4.66
DN65 and larger	(NPS 21⁄2)	(27⁄8 of an inch O.D.)	5
Vertical risers, all sizes, every floor, but not to exceed	Vertical risers, all sizes, every floor, but not to exceed	Vertical risers, all sizes, every floor, but not to exceed	10

For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm

Get a plain-English answer with a citation back to this text.

Ask AI about this code

Export this section

▸Contents — California Plumbing Code (Title 24, Part 5)

California Plumbing Code (Title 24, Part 5)

GoCodebook provides public access, search, citation, multilingual explanation, and practical interpretation of legally adopted building regulations. It is not a substitute for the official ICC or California code publications.