248 Mass. Reg. 10.11

Current through Register 1522, May 24, 2024

Section 10.11 - Plumbing Fixtures

(1)General. Piping shall be installed with provisions, when necessary, for expansion, contraction and/or structural settlement. Piping shall not be supported by other piping which is connected to the plumbing system.

(2)Material. Hangers, anchors, and supports shall be of metal or other material of sufficient strength to support the piping and its contents, except where piers may be of concrete, brick, or other acceptable material. Hangers, anchors and supports shall comply with piping and hanger manufacturers installation instructions.

(3)Attachment to Building. Hangers and anchors shall be securely attached to the building at sufficiently close intervals to support the piping and its contents.

(4)Intervals of Supports.

(a)Vertical Piping. Vertical pipe of the following materials shall be supported at not more than the following distance intervals:

1.Cast Iron Soil Pipe: At base and at each story height.

2.Threaded Pipe (SPS): Every other story height.

3.Copper Tubing: At each story height but not more than ten-foot intervals.

4.Plastic Pipe: At each story height, but not more than ten-foot intervals and elsewhere as required to maintain proper alignment.

5.Stainless Steel Tubing: At each story height, but not more than ten-foot intervals.

6.Aluminum DWV: At each story height, or at intervals not exceeding ten feet.

7.For Cross-linked Polyethylene (PEX) Tubing: The licensee shall consult the individual manufacturers' installation instructions.

(b)Horizontal Piping. Conventional pipe clamps, brackets or strapping that have a bearing width of three quarters of an inch or more. Horizontal pipe of the following materials shall be supported at not more than the following distance intervals.

1.Cast Iron Soil Pipe: At five-foot intervals except that where ten-foot lengths of cast iron soil pipe are used, ten-foot intervals between supports are acceptable.

2.Threaded Pipe: At 12-foot intervals.

3.Copper Tubing (1¼ inches or less): At six-foot intervals.

4.Copper Tubing (1½ inches or over): At ten-foot intervals.

5.Plastic Pipe (1½ inches or less): At three-foot intervals, (two inches or over): At four-foot intervals.

6.For Cross-linked Polyethylene (PEX) Tubing: The licensee shall consult the individual manufacturers' installation instructions.

7.Stainless Steel Tubing (1¼ inches or less): At six-foot intervals.

8.Stainless Steel Tubing (1½ inches or over): At ten-foot intervals.

9.Aluminum DWV Pipe: At ten-foot intervals.

10.CPVC Pipe (one inch or less): At three-foot intervals.

11.CPVC Pipe (m inches or over): At four-foot intervals.

(5)Base of Stacks.

(a) Bases of cast iron stacks shall be supported on concrete, brick laid in cement mortar, metal brackets attached to the building, or by other generally accepted methods.

(b) Other piping material shall be properly supported so as not to cause any additional stress or strain at the base of the stack.