Z
y
Geometrical Properties of Sawn Softwoods
Basic Size
Area A
Section modulus W
Second moment of area I
Radius of Gyration i
About y-y
About z-z
mm x
mm
x 103 mm2
x 103 mm3
x 106 mm4
z
36 x
75
2.70
33.8
16.2
1.27
0.292
21.7
10.4
100
3.60
60.0
21.6
3.00
0.389
28.9
125
4.50
93.8
27.0
5.86
0.486
36.1
150
5.40
135.0
32.4
10.13
0.583
433
38 x
2.85
35.6
18.1
1.34
0.343
11.0
3.80
63.3
24.1
3.17
0.457
Shangri_La1993