02-658 C.M.R. ch. 13, § 11 - Water and Steam Boiler Pipe Supports

Current through 2022-14, April 6, 2022

13.11.1 Generally

Piping must be supported with pipehooks, metal pipe straps, bands, brackets or hangers suitable for the size of the piping and must be of adequate strength an quality and located at intervals so as to prevent or damp out excessive vibration.

13.11.2 Spacing

Spacing of supports shall not be greater than as shown in Table13-1.

13.11.3 Allowance for Expansion and Contraction

Supports, hangers, and anchors must be installed so as to not interfere with the free expansion and contraction of the piping between anchors. All parts of the supporting equipment must be designed and installed so that they will not be disengaged by movement of the supporting piping.


Support of Piping

Steel Pipe, Nominal Size of Pipe


Spacing of Supports


Nominal Size of Tubing

(Inch O.D.)

Spacing of Supports






3/4 or 1


5/8 or 3/4


1 1/4 or larger (horizontal)


7/8 or 1


1 1/4 or larger (vertical)

every floor level


02-658 C.M.R. ch. 13, § 11

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