Formwork for Concrete Structures by R.L.Peurifoy and G.D- By EasyEngineering.net

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56
Thickness
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Approx
Weight
(psf)
Different Species Group
see Note #3 below
t
Effective
Thickness
for Shear, in.
Properties for Stress Applied Parallel to Face
Grain
A
Cross
Sectional
Area,
in. 2 /ft
I
Moment
of Inertia,
in. 4 /ft
S e
Effective
Section
Modulus,
in. 3 /ft
Ib/Q
Rolling
Shear
Constant,
in. 2 /ft
Properties for Stress Applied Perpendicular
to Face Grain
A
Cross
Sectional
Area,
in. 2 /ft
I
Moment
of
Inertia,
in. 4 /ft
S e
Effective
Section
Modulus.
in. 3 /ft
Ib/Q
Rolling
Shear
Constant,
in. 2 /ft
¼-S 0.8 0.267 0.996 0.008 0.059 2.010 0.348 0.001 0.009 2.019
³⁄8-S 1.1 0.288 1.307 0.027 0.125 3.088 0.626 0.002 0.023 3.510
½-S 1.5 0.425 1.947 0.077 0.236 4.466 1.240 0.009 0.087 2.752
5
⁄8-S 1.8 0.550 2.475 0.129 0.339 5.824 1.528 0.027 0.164 3.119
¾-S 2.2 0.568 2.884 0.197 0.412 6.762 2.081 0.063 0.285 4.079
7
⁄ 8-S 2.6 0.586 2.942 0.278 0.515 8.050 2.651 0.104 0.394 5.078
1-S 3.0 0.817 3.721 0.423 0.664 8.882 3.163 0.185 0.591 7.031
1 1 ⁄ 8-S 3.3 0.836 3.854 0.548 0.820 9.883 3.180 0.271 0.744 8.428
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