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 TABLE 2-2
Specific Gravity and Shrinkage Values from Green to Six and Twenty Percent Moisture
Content for Selected Domestic Species
Shrinkage to
Shrinkage to
Specific
6 percent
20 percent
Gravity
moisture content
moisture content
Radial Tangential
Radial Tangential
Species
(%)
(%)
(%)
(%)
Ash (White)
.60
3.8
6.2
1.6
2.6
Beech
.64
4.1
8.8
1.7
3.7
Hickory
.72
5.9
9.1
2.5
3.8
Maple (Sugar)
.63
3.9
7.6
1.6
3.2
Oak (Red)
.63
3.2
6.6
1.3
2.7
Oak (White)
.68
4.2
7.2
1.8
3.0
Sweetgum
.52
4.2
7.9
1.7
3.3
Blackgum (Tupelo)
.50
3.5
6.2
1.5
2.6
Yellow-Poplar
.42
3.2
5.7
1.3
2.4
Softwoods:
Douglas-fir
Coast type
.48
4.0
6.2
1.7
2.6
Intermediate
--
3.3
6.1
1.4
2.5
Rocky Mountain --
2.9
5.0
1.2
2.1
Fir
Pacific silver
.43
3.7
7.8
1.5
3.3
White
.39
2.6
5.7
1.1
2.4
Western Hemlock
.45
3.4
6.3
1.4
2.6
Pine
Eastern White
.35
1.8
4.8
.8
2.0
Southern Yellow .55
4.0
6.1
1.7
2.6
Oven-dry weight and volume at 12 percent moisture content.
Average of four major species.
2-17
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