Piping shall be supported at intervals not exceeding the spacing specified in Table 415.1. Spacing of supports for CSST shall be in accordance with the CSST manufacturer’s instructions.
TABLE 415.1 SUPPORT OF PIPING
TABLE 415.1 SUPPORT OF PIPING
| STEEL PIPE, NOMINAL SIZE OF PIPE (inches) | SPACING OF SUPPORTS (feet) | NOMINAL SIZE OF TUBING (SMOOTH-WALL) (inch O.D.) | SPACING OF SUPPORTS (feet) | |
| 1/2 | 6 | 1/2 | 4 | |
| 3/4 or 1 | 8 | 5/8 or 3/4 | 6 | |
| 11/4 or larger (horizontal) | 10 | 7/8 or 1 (horizontal) | 8 | |
| 11/4 or larger (vertical) | Every floor level | 1 or larger (vertical) | Every floor level |
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.