MISCELLANEOUS SUBSTANCES. ────────────┬──────────┬────────── SUBSTANCE. │ Specific │Weight of │ Gravity. │1 Cub. In. │ │ (Lb.). ────────────┼──────────┼────────── Asbestos │ 2·1–2·80 │·076-·101 Brick │ 1·90 │ ·069 Cement │2·72–3·05 │·0984-·109 Clay │ 2·0 │ ·072 Coal │ 1·37 │ ·0495 Coke │ 0·5 │ ·0181 Concrete │ 2·0 │ ·072 Fire-brick │ 2·30 │ ·083 Granite │ 2·5–2·75 │·051-·100 Graphite │ 1·8–2·35 │·065-·085 Sand-stone │ 2·3 │ ·083 Slate │ 2·8 │ ·102 Wood— │ │ Beech │ 0·75 │ ·0271 Cork │ 0·24 │ ·0087 Elm │ 0·58 │ ·021 Fir │ 0·56 │ ·0203 Oak │ ·62-·85 │·025-·031 Pine │ 0·47 │ ·017 Teak │ 0·80 │ ·029 ────────────┴──────────┴────────── ULTIMATE STRENGTH OE MATERIALS. ──────────────────┬────────────┬────────────┬────────────┬──────────── MATERIAL. │ Tension in │Compression │Shearing in │ Modulus of │lb. per sq. │ in lb. per │lb. per sq. │ Elasticity │ in. │ sq. in. │ in. │ in lb. per │ │ │ │ sq. in. ──────────────────┼────────────┼────────────┼────────────┼──────────── Cast Iron │ 11,000 to│ 50,000 to│ │ 14,000,000 │ 30,000│ 130,000│ │ to │ │ │ │ 23,000,000 „ aver.│ 16,000│ 95,000│ 11,000│ Wrought Iron │ 40,000 to│ │ │ 26,000,000 │ 70,000│ │ │ to │ │ │ │ 31,000,000 „ aver.│ 50,000│ 50,000│ 40,000│ Soft Steel │ 60,000 to│ │ │ 30,000,000 │ 100,000│ │ │ to │ │ │ │ 36,000,000 Soft Steel aver.│ 80,000│ 70,000│ 55,000│ Cast Steel aver.│ 120,000│ │ │ 15,000,000 │ │ │ │ to │ │ │ │ 17,000,000 Copper, Cast │ 19,000│ 58,000│ │