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// CODE SNIPPET

305.4 Interval of Support

2014 FBC - Mechanical, 5th edition > 3 General Regulations > 305 Piping Support > 305.4 Interval of Support
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Piping shall be supported at distances not exceeding the spacing specified in Table 305.4, or in accordance with MSS SP-69.

TABLE 305.4
PIPING SUPPORT SPACINGa

PIPING MATERIALMAXIMUM
HORIZONTAL
SPACING (feet)
MAXIMUM
VERTICAL
SPACING (feet)
ABS pipe410c
Aluminum pipe and tubing1015
Brass pipe1010
Brass tubing, 11/4-inch diameter
and smaller
610
Brass tubing, 11/2-inch diameter
and larger
1010
Cast-iron pipeb515
Copper or copper-alloy pipe1210
Copper or copper-alloy tubing,
11/4-inch diameter and smaller
610
Copper or copper-alloy tubing,
11/2-inch diameter and larger
1010
CPVC pipe or tubing, 1 inch
and smaller
310c
CPVC pipe or tubing, 11/4-inch
and larger
410c
Lead pipeContinuous4
PB pipe or tubing22/3
(32 inches)
4
PEX tubing22/3
(32 inches)
10c
Polypropylene (PP) pipe or
tubing, 1 inch or smaller
22/3
(32 inches)
10c
Polypropylene (PP) pipe or
tubing, 11/4 inches or larger
410c
PVC pipe410c
Steel tubing810
Steel pipe1215
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.
  1. See Section 301.18.
  2. The maximum horizontal spacing of cast-iron pipe hangers shall be increased to 10 feet where 10-foot lengths of pipe are installed.
  3. Mid-story guide.

Related Code Sections


305.4 General Regulations, Interval of Support
Piping shall be supported at distances not exceeding the spacing specified in Table 305.4, or in accordance with ANSI/MSS SP-58. TABLE 305.4 ...
2017 FBC - Mechanical, 6th edition > 3 General Regulations > 305 Piping Support > 305.4 Interval of Support
305.4 General Regulations, Interval of Support
Piping shall be supported at distances not exceeding the spacing specified in Table 305.4, or in accordance with MSS SP-69. TABLE 305.4 PIPING ...
2014 FBC - Mechanical, 5th edition > 3 General Regulations > 305 Piping Support > 305.4 Interval of Support
305.4 General Regulations, Interval of Support
Piping shall be supported at distances not exceeding the spacing specified in Table 305.4, or in accordance with ANSI/MSS SP-58. TABLE 305.4 ...
2020 FBC - Mechanical, 7th edition > 3 General Regulations > 305 Piping Support > 305.4 Interval of Support
308.5 General Regulations, Interval of Support
Pipe shall be supported in accordance with Table 308.5. Exception: The interval of support for piping systems designed to provide for expansion ...
2014 FBC - Plumbing, 5th edition > 3 General Regulations > 308 Piping Support > 308.5 Interval of Support
308.5 General Regulations, Interval of Support
Pipe shall be supported in accordance with Table 308.5. Exception: The interval of support for piping systems designed to provide for expansion ...
2017 FBC - Plumbing, 6th edition > 3 General Regulations > 308 Piping Support > 308.5 Interval of Support
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