02-658-13 Me. Code R. § 11
Piping must be supported with pipe hooks, metal pipe straps, bands, brackets or hangers suitable for the size of the piping and must be of adequate strength and quality and located at intervals so as to prevent or damp out excessive vibration.
Spacing of supports shall not be greater than as shown in Table 13-1.
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.
Table 13-1
Support of Piping
Steel Pipe, Nominal Size of Pipe (Inches) | Spacing of Supports (Feet) | Nominal Size of Tubing (Inch O.D.) | Spacing of Supports (Feet) | |
1/2" | 6' | 1/2" | 4' | |
3/4" or 1" | 8' | 5/8" or 3/4" | 6' | |
1 1/4" or larger (horizontal) | 10' | 7/8" or 1" | 8' | |
1 1/4" or larger (vertical) | every floor level |
02-658 C.M.R. ch. 13, § 11