This section is from the book "The English And American Mechanic", by B. Frank Van Cleve. Also available from Amazon: The English And American Mechanic.
Reduced to the uniform Measure of One Inch Square of Sectional Area, and One Foot in Length. Fixed at one end, Weight suspended from the other.
FORM OF BAR OR BEAM. | Breaking Weight. | |
CAST IRON. | Lbs | |
| Squre.................. | 678 |
| Square, diagonal vertical...................... | 568 |
| Cylinder........................ | 573 |
| Hollow cylinder; greater diameter twice that of | 794 |
| Rectangular prism, 2 ins. deep X in. depth...... | 1456 |
" 3 ins.deep X 1/3 in.depth | 2392 | |
"4 " X¼, " | 2652 | |
FORM OF BAR OR BEAM. | Breaking Weight. | |
| Equilateral triangle, an edge up.............. | Lbs 560 |
| Equilateral triangle, an edge down................ | 958 |
| 2 ins. deep X 2 ins. wide X .268 ins. depth........... | 3068 |
| 2 ins. deep X 2 ins. wide X .268 ins. depth. OAK. | 565 |
| Equilateral triangle, an edge up................... | 114 |
| Equilateral triangle, an edge down.................. | 130 |
 
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