Page 673 - 2018_IRC

WATER SUPPLY AND DISTRIBUTION

TABLE P2904.6.2(8)
ALLOWABLE PIPE LENGTH FOR / 4 -INCH PEX AND PE-RT TUBING
3
AVAILABLE PRESSURE—P t (psi)
SPRINKLER WATER
a
FLOW RATE DISTRIBUTION 15 20 25 30 35 40 45 50 55 60
(gpm) SIZE (inch)
Allowable length of pipe from service valve to farthest sprinkler (feet)
8 3 / 93 123 154 185 216 247 278 309 339 370
4
9 3 / 74 99 124 149 174 199 223 248 273 298
4
10 3 / 61 82 102 123 143 163 184 204 225 245
4
11 3 / 51 68 86 103 120 137 154 171 188 205
4
12 3 / 44 58 73 87 102 117 131 146 160 175
4
13 3 / 38 50 63 75 88 101 113 126 138 151
4
14 3 / 33 44 55 66 77 88 99 110 121 132
4
15 3 / 29 39 48 58 68 77 87 96 106 116
4
16 3 / 26 34 43 51 60 68 77 86 94 103
4
17 3 / 23 31 38 46 54 61 69 77 84 92
4
18 3 / 21 28 34 41 48 55 62 69 76 83
4
19 3 / 19 25 31 37 44 50 56 62 69 75
4
20 3 / 4 17 23 28 34 40 45 51 57 62 68
21 3 / 16 21 26 31 36 41 47 52 57 62
4
22 3 / NP 19 24 28 33 38 43 47 52 57
4
23 3 / 4 NP 17 22 26 31 35 39 44 48 52
24 3 / NP 16 20 24 28 32 36 40 44 49
4
25 3 / NP NP 19 22 26 30 34 37 41 45
4
26 3 / 4 NP NP 17 21 24 28 31 35 38 42
27 3 / NP NP 16 20 23 26 29 33 36 39
4
28 3 / NP NP 15 18 21 24 27 30 33 36
4
29 3 / 4 NP NP NP 17 20 23 26 28 31 34
30 3 / NP NP NP 16 19 21 24 27 29 32
4
31 3 / NP NP NP 15 18 20 23 25 28 30
4
32 3 / 4 NP NP NP NP 17 19 21 24 26 28
33 3 / NP NP NP NP 16 18 20 22 25 27
4
34 3 / NP NP NP NP NP 17 19 21 23 25
4
35 3 / 4 NP NP NP NP NP 16 18 20 22 24
36 3 / NP NP NP NP NP 15 17 19 21 23
4
37 3 / NP NP NP NP NP NP 16 18 20 22
4
38 3 / 4 NP NP NP NP NP NP 16 17 19 21
39 3 / NP NP NP NP NP NP NP 16 18 20
4
40 3 / NP NP NP NP NP NP NP 16 17 19
4
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1 gallon per minute = 0.963 L/s.
NP = Not Permitted.
a. Flow rate from Section P2904.4.2.

648 2018 INTERNATIONAL RESIDENTIAL CODE ®
Copyrighted © 2017 by, or licensed to, ICC (ALL RIGHTS RESERVED); licensed to UL, LLC pursuant to License Agreement with ICC. No further reproductions authorized or distribution authorized.
ANY UNAUTHROIZED REPRODUCTION OR DISTRIBUTION IS A VIOLATION OF THE FEDERAL COPYRIGHT ACT AND THE LICENSE AGREEMENT; AND SUBJECT TO CIVIL AND CRIMINAL PENALTIES THEREUNDER.