Minnesota Administrative Rules
Agency 222 - Plumbing Board
Chapter 4714 - PLUMBING CODE
Part 4714.0313 - HANGERS AND SUPPORTS
Current through Register Vol. 48, No. 39, March 25, 2024
UPC section 313.7 is deleted in its entirety.
Subpart 1. Section 313.
Table 313.3 is amended to read as follows:
| TABLE 313.3 | |||
| HANGERS AND SUPPORTS | |||
| MATERIALS | TYPES OF JOINTS | HORIZONTAL | VERTICAL |
| Cast | Lead and Oakum | 5 feet, except 10 feet where 10 foot lengths are installed1,2,3 | Base and each floor, not to exceed 15 feet |
| Compression Gasket | Every other joint, unless over 4 feet then support each joint1,2,3 | Base and each floor, not to exceed 15 feet | |
| Cast-iron Hubless | Shielded Coupling | Every other joint, unless over 4 feet then support each joint1,2,3,4 | Base and each floor, not to exceed 15 feet |
| Copper & Copper Alloys | Soldered, Brazed, Threaded, or Mechanical | 1-1/2 inches and smaller, 6 feet; 2 inches and larger, 10 feet | Each floor, not to exceed 10 feet5 |
| Steel Pipe for Water or DWV | Threaded or Welded | 3/4 inch and smaller, 10 feet; 1 inch and larger, 12 feet | Every other floor, not to exceed 25 feet5 |
| Steel Pipe for Gas | Threaded or Welded | 1/2 inch, 6 feet; 3/4 inch and 1 inch, 8 feet; 1-1/4 inches and larger, 10 feet | 1/2 inch, 6 feet; 3/4 inch and 1 inch, 8 feet; 1-1/4 inches every floor level |
| Schedule 40 PVC and ABSDWV | Solvent Cemented | All sizes, 4 feet; allow for expansion every 30 feet3,6 | Base and each floor; provide mid-story guides; provide for expansion every 30 feet6 |
| CPVC | Solvent Cemented | 1 inch and smaller, 3 feet; 1-1/4 inches and larger, 4 feet | Base and each floor; provide mid-story guides |
| CPVC-AL-CPVC | Solvent Cemented | 1/2 inch, 5 feet; 3/4 inch, 65 inches; 1 inch, 6 feet | Base and each floor; provide mid-story guides |
| Lead | Wiped or Burned | Continuous Support | Not to exceed 4 feet |
| Steel | Mechanical | In accordance with standards acceptable to the Authority Having Jurisdiction | |
| PEX | Cold Expansion, Insert, and Compression | 1 inch and smaller, 32 inches; 1-1/4 inches and larger, 4 feet | Base and each floor; provide mid-story guides |
| PEX-AL-PEX | Metal Insert and Metal Compression | 1/2 inch; 3/4 inch; 1 inch All sizes 98 inches | Base and each floor; provide mid-story guides |
| PE-AL-PE | Metal Insert and Metal Compression | 1/2 inch; 3/4 inch; 1 inch All sizes 98 inches | Base and each floor; provide mid-story guides |
| PE-RT | Insert and Compression | 1 inch and smaller, 32 inches; 1-1/4 inches and larger, 4 feet | Base and each floor; provide mid-story guides |
| Polypropylene (PP) | Fusion Weld (socket, butt, saddle, electrofusion), Threaded (metal threads only), or Mechanical | 1 inch and smaller, 32 inches; 1-1/4 inches and larger, 4 feet | Base and each floor; provide mid-story guides |
For SI units: 1 inch = 25.4 mm, 1 foot = 304.8 mm
Notes:
1 Support adjacent to joint, not to exceed 18 inches (457 mm).
2 Brace not to exceed 40-foot (12,192 mm) intervals to prevent horizontal movement.
3 Support at each horizontal branch connection.
4 Hangers shall not be placed on the coupling.
5 Vertical water lines shall be permitted to be supported in accordance with recognized engineering principles with regard to expansions and contraction, where first approved by the Authority Having Jurisdiction.
6 For expansion joints, see Table 313.3.1.
