02- 385 C.M.R. ch. 890, § G-IV

Current through 2024-51, December 18, 2024
Section 385-890-G-IV - Drainage Systems
A.Crossovers

Multi-section homes with plumbing in more than one section require drainage system crossover connections to join all sections of the home.The crossover design requirements are located in, and must be designed in accordance with part 3280.610.

B.Assembly and Support

If portions of the drainage system were shipped loose because they were necessary to join all sections of the home and designed to be located underneath the home, they must be installed and supported in accordance with 3280.608.

C.Proper Slopes

Drains must be completed in accordance with 3280.610:

1. Drain lines must not slopeless than one-quarter inch per foot, unless otherwise noted on the schematic diagram, as shown in the figure to Subchapter G, Section IV.
2. A slope of one-eighth inch per foot may be permitted when a clean-out is installed at the upper end of the run.
D.Testing Procedures

The drainage system must be inspected and tested for leaks after completion at the site.The installation instructions must provide testing requirements that are consistent with 3280.612.

Figure to Subchapter G, Section IV - Drainage Systems

Drain Pipe Slope and Connections

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02- 385 C.M.R. ch. 890, § G-IV