Woods
Description
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.
Woods
Lbs. | |
Ash.............................. | 14000 |
Beech.............................. | 11500 |
Box.............................. | 20000 |
Bay.............................. | 15000 |
Cedar.............................. | 11400 |
Chestnut, sweet................ | 10500 |
Cypress.............................. | 6000 |
Deal, Christiana.................. | 12400 |
Elm.............................. | 18400 |
Lance.............................. | 23000 |
Lignum-vitae | 11800 |
Locust............................... | 20500 |
Mahogany.............................. | 21000 |
" Spanish............ | 12000 |
" " ........... | 8000 |
Lbs. | |
Maple......................... | 10000 |
Oak, American white......... | 11.500 |
" English................. | 10000 |
" seasoned................ | 13000 |
" African............... | 14500 |
Pear................... | 9800 |
Pine, pitch............ | 12000 |
" larch........................_ | 9500 |
" American white......_ | 11800 |
Poplar............... | 10290 |
Spruce, white............. | 10290 |
Sycamore............ | 13000 |
Teak............................... | 14000 |
Walnot................................ | 7800 |
Willow................................ | 13000 |
Woods
Beams of wood, when laid with their annual or annular layers vertical, are stronger than when they are laid horizontal, in the proportion of 8 to 7.
Woods are denser at the roots and at the centre of their trunks. Their strength decreases with the decrease of their density.
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