Crows Forest

The figures are the average of radial and tangential shrinkages.

Footnote 4: How much different woods vary may be seen by the following table, taken from Filibert Roth, Timber, Forest Service Bulletin No. 10, p. 28:

WEIGHT OF KILN-DRIED WOOD OF DIFFERENT SPECIES.

Approximate.

Specific weight. Weight of

1 cubic foot. 1,000 feet of lumber.

Pounds Pounds

(a) Very heavy woods:

Hickory, oak, persimmon, osage, orange, black locust, hackberry, blue beech, best of elm, and ash 0.70-0.80 42-48 3,700

(b) Heavy woods:

Ash, elm, cherry, birch, maple, beech, walnut, sour gum, coffee tree, honey locust, best of southern pine, and tamarack .60-.70 36-42 3,200

(c) Woods of medium weight:

Southern pine, pitch pine, tamarack, Douglas spruce, western hemlock, sweet gum, soft maple, sycamore, light sassafras, mulberry, grades of birch and cherry .50-.60 30-36 2,700

(d) Light woods:

Norway and bull pine, red cedar, cypress, hemlock, the heavier spruce and fir, redwood, basswood, chestnut, butternut, tulip, catalpa, buckeye, heavier grades of poplar .40-.50 24-30 2,200

(e) Very light woods: