Related Resources: civil engineering
Wood Engineering Properties #2
Civil Engineering Design and Engineering
Strength and engineering properties of some commercially important woods grown in the United States (inch–pound)
Common species names |
Specific
gravity |
Static Bending
|
Impact
Bending (in.) |
Compression
Parallel to Grain (lbf/in2) |
Compression
Perpendicular bending (in.) to grain (lbf/in2) |
Shear
Parallel to Grain (lbf/in2) |
Tension
Perpendicular to Grain (lbf/in2) |
Side
hardness (lbf) |
||
Modulus
of Rupture (lbf/in2) |
Modulus
of elasticity (× 106 lbf/in2) |
Maximum
Working load (in-lbf/in3) |
||||||||
Hardwoods
|
||||||||||
Douglas-fir, Coast |
0.45
|
7,700
|
1.56
|
7.6
|
26
|
3,780
|
380
|
900
|
300
|
500
|
0.48
|
12,400
|
1.95
|
9.9
|
31
|
7,230
|
800
|
1,130
|
340
|
710
|
|
Douglas-fir, Interior West |
0.46
|
7,700
|
1.51
|
7.2
|
26
|
3,870
|
420
|
940
|
290
|
510
|
0.50
|
12,600
|
1.83
|
10.6
|
32
|
7,430
|
760
|
1,290
|
350
|
660
|
|
Douglas-fir, Interior North |
0.45
|
7,400
|
1.41
|
8.1
|
22
|
3,470
|
360
|
950
|
340
|
420
|
0.48
|
13,100
|
1.79
|
10.5
|
26
|
6,900
|
770
|
1,400
|
390
|
600
|
|
Douglas-fir, Interior South |
0.43
|
6,800
|
1.16
|
8.0
|
15
|
3,110
|
340
|
950
|
250
|
360
|
0.46
|
11,900
|
1.49
|
9.0
|
20
|
6,230
|
740
|
1,510
|
330
|
510
|
|
Fir, Balsam |
0.33
|
5,500
|
1.25
|
4.7
|
16
|
2,630
|
190
|
662
|
180
|
290
|
0.35
|
9,200
|
1.45
|
5.1
|
20
|
5,280
|
404
|
944
|
180
|
400
|
|
Fir, California red |
0.36
|
5,800
|
1.17
|
6.4
|
21
|
2,760
|
330
|
770
|
380
|
360
|
0.38
|
10,500
|
1.50
|
8.9
|
24
|
5,460
|
610
|
1,040
|
390
|
500
|
|
Fir, Grand |
0.35
|
5,800
|
1.25
|
5.6
|
22
|
2,940
|
270
|
740
|
240
|
360
|
0.37
|
8,900
|
1.57
|
7.5
|
28
|
5,290
|
500
|
900
|
240
|
490
|
|
Fir, Noble |
0.37
|
6,200
|
1.38
|
6.0
|
19
|
3,010
|
270
|
800
|
230
|
290
|
0.39
|
10,700
|
1.72
|
8.8
|
23
|
6,100
|
520
|
1,050
|
220
|
410
|
|
Fir, Pacific silver |
0.40
|
6,400
|
1.42
|
6.0
|
21
|
3,140
|
220
|
750
|
240
|
310
|
0.43
|
11,000
|
1.76
|
9.3
|
24
|
6,410
|
450
|
1,220
|
—
|
430
|
|
Fir, Subalpine |
0.31
|
4,900
|
1.05
|
—
|
—
|
2,300
|
190
|
700
|
—
|
260
|
0.32
|
8,600
|
1.29
|
—
|
—
|
4,860
|
390
|
1,070
|
—
|
350
|
|
Fir, White |
0.37
|
5,900
|
1.16
|
5.6
|
22
|
2,900
|
280
|
760
|
300
|
340
|
0.39
|
9,800
|
1.50
|
7.2
|
20
|
5,800
|
530
|
1,100
|
300
|
480
|
|
Hemlock, Eastern |
0.38
|
6,400
|
1.07
|
6.7
|
21
|
3,080
|
360
|
850
|
230
|
400
|
0.40
|
8,900
|
1.20
|
6.8
|
21
|
5,410
|
650
|
1,060
|
—
|
500
|
|
Hemlock, Mountain |
0.42
|
6,300
|
1.04
|
11.0
|
32
|
2,880
|
370
|
930
|
330
|
470
|
0.45
|
11,500
|
1.33
|
10.4
|
32
|
6,440
|
860
|
1,540
|
—
|
680
|
|
Hemlock, Western |
0.42
|
6,600
|
1.31
|
6.9
|
22
|
3,360
|
280
|
860
|
290
|
410
|
0.45
|
11,300
|
1.63
|
8.3
|
23
|
7,200
|
550
|
1,290
|
340
|
540
|
|
Hemlock, Larch, western |
0.48
|
7,700
|
1.46
|
10.3
|
29
|
3,760
|
400
|
870
|
330
|
510
|
0.52
|
13,000
|
1.87
|
12.6
|
35
|
7,620
|
930
|
1,360
|
430
|
830
|
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