Page 941 - 2018_IRC

APPENDIX P

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 gallon per minute = 3.785 L/m, 1 pound per square inch = 6.895 kPa, 1 foot per second = 0.305 m/s.
a. This figure applies to fairly rough pipe and to actual diameters, which, in general, will be less than the actual diameters of the new pipe of the same kind.
FIGURE AP103.3(6)
FRICTION LOSS IN FAIRLY ROUGH PIPE
a
916 2018 INTERNATIONAL RESIDENTIAL CODE ®
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