N.Y.C. Admin. Code § PC E202: Section PC E202: Determination of Pipe Volumes

E202.1 Determining volume of piping systems.

Where required for engineering design purposes, Table E202.1 shall be used to determine the approximate internal volume of water distribution piping.

Table E202.1 Internal Volume of Various Water Distribution Tubing

Ounces of Water Per Foot of Tube

Size Nominal, Inch

Copper Type L

Copper Type K

3/8

0.97

0.84

1/2

1.55

1.45

3/4

3.22

2.90

1

5.49

5.17

1 1/4

8.36

8.09

1 1/2

11.83

11.45

2

20.58

20.04

For SI: 1 ounce = 0.030 liter.