Page 172 - 2018_IPC
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APPENDIX E
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 gpm = 3.785 L/m, 1 psi = 6.895 kPa, 1 foot per second = 0.305 m/s.
a. This chart applies to very rough pipe and existing pipe and to their actual diameters.
FIGURE E103.3(7)
FRICTION LOSS IN ROUGH PIPE a
2018 INTERNATIONAL PLUMBING CODE ® 155
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