Timber
Description
This section is from the book "Scientific American Reference Book. A Manual for the Office, Household and Shop", by Albert A. Hopkins, A. Russell Bond. Also available from Amazon: Scientific American Reference Book.
Timber
Name of Wood | Tensile Strength in Pounds per Sq. In. | Resistance to Crushing in Pounds per Sq. In. |
Ash......... | 11,000-21,000 | 6,000-9,000 |
Beech........... | 11,000-18,000 | 9,000-10,000 |
Birch............ | 12,000-18,000 | 5,000-7,000 |
Chestnut.......... | 10,000-13,000 | 4,000-6,000 |
Elm......... | 12,000-18,000 | 6,000-10,000 |
Hackberry. . .. | 10,000-16,000 | |
Hickory...... | 15,000-25,000 | 7,000-12,000 |
Maple............... | 8,000-12,000 | 6,000-8,000 |
Mulberry.......... | 8,000-14,000 | |
Oak, burr. . . . | 15,000-20,000 | 7,000-10,000 |
" red..... | 13,000-18,000 | 5,000-7,000 |
" water. . . | 12,000-16,000 | 4,000-6,000 |
" white. | 20,000-25,000 | 6,000-9,000 |
Poplar............. | 10,000-15,000 | 5,000-8,000 |
Walnut...... | 8,000-14,000 | 4,000-8,000 |
* On the authority of Wertheim.
† The crushing strength of cast iron is from 5.5 to 6.5 times the tensile strength.
Notes
According to Boys, quartz fibers have a tensile strength of between 116,000 and 167,000 pounds per square inch.
Leather Belting Of Single Thickness Bears From 400 To 1,600 Pounds Per Inch Of Its Breadth
Smithsonian Tables.
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