6144. Weight of Round and Square Shafts of Wrought Iron

6144. "Weight of Round and Square Shafts of Wrought Iron, 1 Foot Long.

6144 Weight of Round and Square Shafts of Wrought 77

6145. Weights of Wrought-Iron and Steel

6145. Weights of Wrought-Iron and Steel.

Bound Iron. - Multiply the square of the diameter in inches, by the length in feet, and by 2.63, and the product will be the weight in pounds avoirdupois, nearly.

Square Iron. - Multiply the area of the end of the bar in inches, by the length in feet, and by 3.36; the product will be the weight in pounds avoirdupois, nearly.

Square, Angled, T, Convex, or any figure of Beam Iron. - Ascertain the area of the end of each figure of bar, in inches, then multiply the area by the length in feet, and that product by 10, and divide by three; the remainder will be the weight in pounds, nearly.

Square Cast Steel. - Multiply the area of the end of the bar in inches, by the length in feet, and that product by 3.4; the product will be the weight in pounds, nearly.

Bound Cast Steel. - Multiply the square of the diameter in inches, by the length in feet, and that product by 2.67; the product will give the weight in pounds avoirdupois, nearly.

6146. Number of Nails per Pound

6146. Number of Nails per Pound. The following table shows the length of the various sizes of nails and the number of each in a pound:

Size.

Length.

Number.

3-penny,

1 inch long,

557 per pound.

4 "

1 1/4 "

353

5 "

l| "

232

6 "

2

167

7 "

2 1/4 "

141 "

8 "

2 1/4 "

101 "

10 "

2 3/4|

98

12 "

3

54 "

20 "

3 1/2 "

34

Spikes

4 "

16 "

"

4 1/2 "

12 "

 

5 "

10 "

"

6

7 "

"

7 "

5 "

The term "penny," designating the size of nails, appears to mean "pound." Ten-penny nails weighing 10 pounds per thousand, four-penny nails 4 pounds per thousand, etc.. (Webster.) This is probably the weight the nails were originally made; according to the foregoing table they have since learned economy in the material.