02-658-8 Me. Code R. § 19
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 shown in Table 8-1.
Supports, hangers, and anchors must be installed so as not to 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 8-1
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. 8, § 19