This section is from the book "The Building Trades Pocketbook", by International Correspondence Schools. Also available from Amazon: Building Trades Pocketbook: a Handy Manual of reference on Building Construction.
Compression. Lb. per Sq. In. | Tension. Lb. per Sq. In. | ||
Building Stone. | |||
Bluestone.......................................... | 13,500 | 1,400 | 2,700 |
Granite, average................................ | 15,000 | 600 | 1,800 |
Connecticut................................... | 12,000 | ||
New Hampshire............................. | 15,000 | 1,500 | |
Massachusetts............................... | 16,000 | 1,800 | |
New York...................................... | 15,000 | ||
Limestone, average ......................... | 7,000 | 1,000 | 1,500 |
Hudson River, N. Y..................... | 17,000 | ||
Ohio................................................ | 12,000 | 1,500 | |
Marble, Vermont............................. | 8,000 | 700 | 1,200 |
Sandstone, average.......................... | 5,000 | 150 | 1,200 |
New Jersey ................................... | 12,000 | 650 | |
New York............................. | 10,000 | 1,700 | |
Ohio............................................ | 9,000 | 100 | 700 |
Slate.................................................. | 10,000 | 4,000 | 5,000 |
Stonework (strength of stone) ....... | 4/10 | 4/10 | 4/10 |
Brick, light red............................ | 1,000 | 40 | |
Good common................................ | 10,000 | 200 | 600 |
Best hard..................................... | 12,000 | 400 | 800 |
Philadelphia pressed | 6,000 | 200 | 600 |
1,000 | 50 | ||
Good cement-and-lime mortar...... | 1,500 | 100 | |
Best cement mortar....................... | 2.000 | 300 | |
Terra cotta ...................................... | 5,000 | ||
Terra-cotta work....................... | 2,000 | ||
Cements, etc. | |||
Cement, Rosendale, 1 mo. old......... | 1,200 | 200 | 200 |
Portland, 1 mo. old...................... | 2,000 | 400 | 400 |
Rosendale, 1 yr. old | 2,000 | 300 | 400 |
Portland, 1 vr. old......................... | 3,000 | 500 | 800 |
Mortar, lime, 1 yr. old...................... | 400 | 50 | 100 |
Lime and Rosendale, 1 vr. old....... | 600 | 75 | 200 |
Rosendale cement, 1 yr. old.......... | 1,000 | 125 | 300 |
Portland cement, 1 yr. old............ | 2,000 | 250 | 600 |
Concrete, Portland, 1 mo. old.......... | 1,000 | 200 | 100 |
Rosendale, 1 mo. old...................... | 500 | 100 | 50 |
Portland. 1 yr. old......................... | 2.000 | 400 | 150 |
Rosendale, 1 yr. old...................... | 1,000 | 200 | 75 |
The values in the preceding table are ultimate, and from 1/10 to 1/30 of these values is used as the safe working strength of the materials.
The following table gives the safe working loads allowable in good practice for brickwork, masonry, and foundation soils:
 
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