Page 847 - 2018_IRC

APPENDIX A

TABLE A.2.2
EQUIVALENT LENGTHS OF PIPE FITTINGS AND VALVES
SCREWED FITTINGS 1 90° WELDING ELBOWS AND SMOOTH BENDS 2
180°close return
1
45°/Ell 90°/Ell Tee R/d = 1 R/d = 1 / 3 R/d = 2 R/d = 4 R/d = 6 R/d = 8
bends
k factor = 0.42 0.90 2.00 1.80 0.48 0.36 0.27 0.21 0.27 0.36
L/d' ratio n = 1 4 30 67 60 16 12 9 7 9 12
4
Inside
Nominal
pipe size, diameter d, L = Equivalent Length In Feet of Schedule 40 (Standard-weight) Straight Pipe 6
inches,
inches 6
Schedule 40
1 / 0.622 0.73 1.55 3.47 3.10 0.83 0.62 0.47 0.36 0.47 0.62
2
3 / 0.824 0.96 2.06 4.60 4.12 1.10 0.82 0.62 0.48 0.62 0.82
4
1 1.049 1.22 2.62 5.82 5.24 1.40 1.05 0.79 0.61 0.79 1.05
1
1 / 4 1.380 1.61 3.45 7.66 6.90 1.84 1.38 1.03 0.81 1.03 1.38
1 / 2 1.610 1.88 4.02 8.95 8.04 2.14 1.61 1.21 0.94 1.21 1.61
1
2 2.067 2.41 5.17 11.5 10.3 2.76 2.07 1.55 1.21 1.55 2.07
1
2 / 2 2.469 2.88 6.16 13.7 12.3 3.29 2.47 1.85 1.44 1.85 2.47
3 3.068 3.58 7.67 17.1 15.3 4.09 3.07 2.30 1.79 2.30 3.07
4 4.026 4.70 10.1 22.4 20.2 5.37 4.03 3.02 2.35 3.02 4.03
5 5.047 5.88 12.6 28.0 25.2 6.72 5.05 3.78 2.94 3.78 5.05
6 6.065 7.07 15.2 33.8 30.4 8.09 6.07 4.55 3.54 4.55 6.07
8 7.981 9.31 20.0 44.6 40.0 10.6 7.98 5.98 4.65 5.98 7.98
10 10.02 11.7 25.0 55.7 50.0 13.3 10.0 7.51 5.85 7.51 10.0
12 11.94 13.9 29.8 66.3 59.6 15.9 11.9 8.95 6.96 8.95 11.9
14 13.13 15.3 32.8 73.0 65.6 17.5 13.1 9.85 7.65 9.85 13.1
16 15.00 17.5 37.5 83.5 75.0 20.0 15.0 11.2 8.75 11.2 15.0
18 16.88 19.7 42.1 93.8 84.2 22.5 16.9 12.7 9.85 12.7 16.9
20 18.81 22.0 47.0 105.0 94.0 25.1 18.8 14.1 11.0 14.1 18.8
24 22.63 26.4 56.6 126.0 113.0 30.2 22.6 17.0 13.2 17.0 22.6

(continued)

822 2018 INTERNATIONAL RESIDENTIAL CODE ®
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