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12

Key to Code Check

Pipes in Trench

General IRC UPC
Supported along entire length . . . . . . . . . . . . . . .F-p2 [2605.1] {314.3}
Common trench for gas & electric services OK . . . . . . . . .[utility] {utility}
No sewer in common trench . . . . . . . . . . . . . . . . . . . . . .[utility] {utility}

Water Service
Sizing . . . . . . . . . . . . . . . . . . . . . . . .T-p7.1 and T-p7.2 [2903.7] {t6-5}
6in. {12in.} below frost line (may vary with locale) . . . . .[2603.6] {609.1}
12in. above & 12in. horiz. from clay sewer . . . . . . . . .[2904.4.1] {609.2}
Wrap pipe passing through concrete, do not embed . . .[2603.3,5] {313.1,2}
Support and protect pipe . . . . . . . . . . . . . . . . . . .F-p2 [2605.1] {314}
Three bathrooms usually means 1in. service . . . . . . . .[T2903.7] {t6-5}
No reduction to inlet of service by softener, backflow . . .[n/a] {610.2}
Min. service win. . . . . . . . . . . . . . . . . . . . . . . . . . . . [2903.7] {610.8}
Accessible shutoff req’d at house . . . . . . . . . . . . . . [2903.9.1] {605.2}

Pressure Regulator
Excessive water pressure >80psi must be regulated . .[2903.3.1] {608.2}
Accessible strainer ahead of regulator . . . . . . . . . . . .[2903.3.1] {608.2}
Exs’ve back pressure protection (bypass, exp. tank, etc.) [2903.4] {608.3}
Min. static pressure 40psi {15psi} . . . . . . . . . . . . . . . . [2903.3] {608.1}

Gas Pipes
Buried metal--min. 12in. deep & factory wrapped [2414.9,2414.8.2] {1211.6}
Buried plastic outdoor only--min. 12in. deep {18in.} . . . .[2414.9] {1211.6}
Buried plastic req’s #18 tracer wire . . . . . . . . . . . . .[2414.14.3] {1211.19}
Protectively coat buried pipe joints . . . . . . . . . . . . . .[2414.8.2X] {1211.10}

Fixtures below Manhole

Fixtures below Manhole
Only & all fixtures with flood rim below upstream manhole
shall feed through accessible backwater valve . . . . . . . F-p1 [3008.1] {710.1}

DWV Test

Test DWV before each coverup . . . . . . . . . . . . . . . . . [2503.5.1] {712.0}
DWV water test 10ft. head, 15 minutes OR . . . . . . . .[2503.5.1] {712.2,3}
Air test 5psi (10in. mercury), 15 minutes . . . . . . . . . .[2503.5.1] {712.2,3}

Ejector

Only the fixtures below crown level of sewer may discharge through ejector
................................... . . . . . . . . . . . . . . . . . . . . . . . .F-p1 [3007.2.1] {710.2}
Backwater & gate valves on pump discharge . . . . . .F-p1 [3007.1] {710.4}
Sizing--1.5 {2} fixt. units per gal./min. of flow . . . . . . . [t3004.1] {710.5}
Min. 2in. discharge . . . . . . . . . . . . . . . . . . . . . . .F-p1 [3007.1] {710.3.2}
Lift to horizontal sewer then drain by gravity . . . . . . . . [3007.2.1] {710.4}