Length of rivet required to make one head= 14 diameters of round bar.

NAILS AND SPIKES.

SIZE, LENGTH, AND NUMBER TO THE POUND. Cumberland Nail and Iron Company.

12

30.1

45.6

61.4 77.5

13 32.5

14 35.0

86.5 102.0 118.0 134.0 150.0

93.9 111.0 128.0 145.0 163.0 49.2 66.3 83.6 101.0 119.0 138.0 156.0 175.0 52.9 71.2 89.7 109.0 128.0 147.0 167.0 187.0 15 37.4 56.6 76.1 95.9 116.0 136.0 157.0 178.0 199.0 16 39.1 60.3 81.0 102 0 123.0 145.0 167.0 189.0 212.0 44.8 67.7 90.9 114.0 138.0 162.0 187.0 211.0 236.0 | 49.7 75.2 101.0 127.0 153.0 179.0 206.0 233.0 261.0 22 54.6 82.6 111.0 139.0 168.0 197.0 226.0 255.0 285.0

18

20

24

59.6 89.9 120.0 151.0 182.0 214.0 245.0 278.0 310.0 26 64.5 97.3 131.0 164.0 198.0 231.0 266.0 300.0 335.0

28

30

69.4 105.0 140,0 176,0 212.0 249.0 286.0 323.0 360.0 74.2 112.0 150.0 188.0 227.0 266.0305.0 345.0 384.0

NOTE.

For each joint, add a foot to length of pipe.

WEIGHTS, PER FOOT, OF CAST-IRON PIPES IN GEN ERAL USE, INCLUDING SOCKET AND

SPIGOT

Diameter.

WEIGHTS OF CAST-IRON WATER-PIPES.
In pounds, per foot run, including bells and spigots.

Water-pipe is usually tested to three hundred pounds' pressure per square inch before delivery, and a hammer test should be made while the pipe is under pressure.

The Philadelphia lengths for each section are, for three and four inch pipe, 9 feet; all larger sizes, 12 feet 3 inches in length.

The Cincinnati lengths are uniform for all diameters, -12 feet. Chicago, same as Cincinnati.

Standard lengths are, for two-inch pipe, 8 feet, and all other sizes, 12 feet.

The thickness of the lead joint ranges from one-fourth inch on small sizes to one-half inch on the large sizes.