Page 932 - 2018_IRC

APPENDIX P

Excess pressure over friction
10 losses (psi) — — — — — — — 3.43 — — — — — — 1.37

Friction loss in equivalent length Column 7 — — —
9 Column 8 x (psi) 2.21 0.26 0.38 3.08 3.08 5.93 2.21 0.22 0.54 5.02 5.02 7.99

8 Friction loss per 100 feet of trial size pipe (psi) — 3.2 3.1 1.9 1.9 1.9 — — 3.3 1.4 3.2 3.2 3.2 — —

Total equivalent length [(Col. 4 + Col. 6)/100 feet)] — 0.085 — — — —
7 0.69 0.20 1.62 1.62 0.69 0.16 0.17 1.57 1.57

Equivalent
6 length of fittings and valves (feet) — 15.00 0.5 7.00 12.00 12.00 — — 12.00 7.5 4.0 7.00 7.00 — —

5 Trial pipe size (inches) — 2 1 / 2 2 1 / 2 2 1 / 2 2 1 / 2 2 1 / 2 — — 2 1 / 2 2 1 1 / 2 1 1 / 2 1 1 / 2 — —

Length of
4 section (feet) — 54 8 13 150 150 — — 54 8 13 150 150 — —
TABLE AP103.3(1) RECOMMENDED TABULAR ARRANGEMENT FOR USE IN SOLVING PIPE SIZING PROBLEMS 3 Gallons Pounds per min per through square section inch . . . . 1.61 — 108.0 104.5 77.0 77.0 77.0 — — 108.0 38.0 28.6 28.6 28.6 — —

2 (see Table P2903.1). . . . . . . . . . . . . . . . . . . . . . . 15.00 . . . . . . . . . . . . . . . . . . . . 0.00 (Sum of Lines B through H) . . . . . . . . . . . . . . . . 45.64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .288 B-C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .264 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132 C-F b . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132 D-E b . .
Highest pressure required at a fixture Minimum pressure available at main. . . . . . . . . . . . 55.00 Meter loss 2″ meter . . . . . . . . . . . . . . . . . . . . . . . . . 11.00 Tap in main loss 2″ tap [see Table AP103.3(4)] Static head loss 21 ft × 0.43 psi/ft . . . . . . . . . . . . . . . 9.03 Special fixture loss backflow preventer. . . . . . . . . . . 9.00 Special fixture loss—Filter . . . . . . . . . . . . . . . . . . . . 0.00 Total overall

Description Special fixture loss—Other A-B C-D To consider separately, in Line K use Section C-F only if greater loss than the loss in Section D-E.

1 Total pipe friction losses (cold) Difference (Line J minus Line K) Hot water Distribution Piping Total pipe friction losses (hot) Difference (Line J minus Line K)
Service and cold water distribution piping a Pipe section (from diagram) cold water distribution piping Pipe section (from diagram)

COLUMN Line A B C D E F G H I J K L K L For SI: a. b.

2018 INTERNATIONAL RESIDENTIAL CODE ® 907
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