10.08: Example 1 - Vertical Distance from Fixture Outlet to Trap Weir
10.08: Example 2 - Vertical Distance from Fixture Outlet to Trap Weir
Table 1
Minimum Size of Fixture Traps
PLUMBING FIXTURE | Trap Size in Inches |
Bathtub (with or without overhead shower) | 1½ |
Bidet | 1½ |
Clothes washing machine connection | 2 |
Combination sink and wash tray | 1½ |
Combination sink and wash tray with food waste disposer unit | 1½ |
Dental unit or cuspidor | 1½ |
Dental Lavatory | 1½ |
Drinking Water Station, with Drain | 1¼ |
Dishwasher, commercial | 2 |
Dishwasher, domestic | 1½ |
Floor drain | 2 |
Food waste disposer | 1½ |
Kitchen sink, domestic, with food waste disposer unit | 1½ |
Kitchen sink (two compartments) | 1½ |
Kitchen sink, domestic | 1½ |
Lavatory, common | 1½ |
Lavatory (barber shop, beauty parlor or surgeon's) | 1½ |
Lavatory, (multiple type) (wash fountain or wash sink) | 1½ |
Laundry sink (one or two compartments) | 1½ |
Shower stall | 2 |
Sink (surgeon's) | 1½ |
Sink (flushing rim type with flushometer valve) | 3 |
Sink (service type with floor outlet trap standard) | 3 |
Sink (service trap with P trap) | 2 |
Sink, commercial (pot, scullery, or similar type) | 2 |
Sink, commercial (with food disposer unit) | 2 |
Exception:
10.08: Example 3 - Minimum Liquid Trap Seal
Exception: Where a trap in compliance with 248 CMR 10.08(2)(d) may be subject to freezing temperatures, a running trap may be installed in an area not subject to freezing but as close as possible to the fixture it serves.
10.08: Example 4 - Maximum Cleanout Distance on Horizontal Drain
10.08: Example 5
Concealed Cleanout in Floor
Concealed Cleanout in Wall
10.08: Example 6 - Cleanout at the Base of a Stack
10.08: Example 7 - Piping Configurations of Building Drains at Foundation Wall
10.08: Examples 8 and 9
10.08: Example 8
Inaccessible Cleanout at The Base of A Stack
10.08: Example 9
Building Drain Cleanout Installed Outside
10.08: Example 10 - Cleanout Clearances
248 CMR 10.08