1327.5 Maximum Copper Tube 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) § 1327.5 · Effective January 1, 2026 · Official source: Building Standards Commission

The maximum support spacing for copper tube shall be in accordance with Table 1327.5. [NFPA 99:15.4.5.6.5]

TABLE 1327.5

MAXIMUM COPPER TUBE SUPPORT SPACING

[NFPA 99: TABLE 15.4.5.6.5]

PIPE SIZE			HANGER SPACING (feet)
DN8	(NPS1_/_4)	(3_/_8 of an inch O.D.)	5
DN10	(NPS3_/_8)	(1_/_2 of an inch O.D.)	6
DN15	(NPS1_/_2)	(5_/_8 of an inch O.D.)	6
DN20	(NPS3_/_4)	(7_/_8 of an inch O.D.)	7
DN25	(NPS 1)	(11_/_8 of an inch O.D.)	8
DN32	(NPS 11_/_4)	(13_/_8 of an inch O.D.)	9
DN40 and larger	(NPS 11_/_2)	(15_/_8 of an inch O.D.)	10
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	15

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

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California Plumbing Code (Title 24, Part 5)

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