This section is from the book "The Building Trades Pocketbook", by International Correspondence Schools. Also available from Amazon: Building Trades Pocketbook: a Handy Manual of reference on Building Construction.
Parallel to Shorter Flange. | Neutral Axis Parallel to Longer Flange. | |||||||||
Size of Angle. | Weight per Foot. | Area of Section. | Rad. of Gyration. (In.) | Center of Gravity.* | Moment of Inertia. | 8ection Modulus. | Rad ofGyration. (In:) | |||
Inches. | Lb. | Sq. In. | In. | I. | Q. | R. | In. | r. | C | - |
6 X4 X 7/8 | 28.4 | 8.34 | 2.2 | 31.84 | 7.89 | 1.9 | 1.18 | 11.81 | 3.85 | 1.2 |
6X4X3/8 | 12.3 | 3.61 | 1.9 | 13.51 | 3.32 | 1.9 | .94 | 4.90 | 1.60 | 1.2 |
5 X 3 1/2 X3/41 | 20.3 | 5.98 | 1.8 | 15.15 | 4.53 | 1.6 | 1.03 | 6.23 | 2.39 | l.0 |
5 X 3 1/2 X 3/8 | 10.4 | 3.05 | 1.6 | 7.78 | 2.29 | 1.6 | .86 | 3.18 | 1.21 | 1.0 |
5 X3 X 3/4 | 19.3 | 5.68 | 1.9 | 14.91 | 4.55 | 1.6 | .88 | 4.27 | 1.85 | .9 |
5 X3X5/16 | 8.2 | 2.40 | 1.7 | 6.26 | 1.89 | 1.6 | .68 | 1.75 | .7.-. | .8 |
4 1/2X3 X3/4 | 17.8 | 5.23 | 1.7 | 10.73 | 3.59 | 1.4 | .91 | 3.89 | 1.75 | .9 |
4 1/2X3 X5/16 | 7.7 | 2.25 | 1.5 | 4.67 | 1.54 | 1.5 | .72 | 1.70 | .75 | .9 |
4 X 3 1/2 X 3/4 | 17.8 | 5.23 | 1.4 | 8.12 | 2.95 | 1.2 | 1.12 | 6.88 | 2.33 | 1.0 |
4 X3 1/2X5/16 | 7.7 | 2.25 | 1.2 | 3.57 | L24 | 1.3 | .93 | 2.56 | .99 | 1.1 |
4X3X5/8 | 13.5 | 8.98 | 1.4 | 6.04 | 2.31 | 1.2 | .87 | 2.73 | 1.28 | .8 |
4 X3X5/16 | 7.1 | 2.00 | 1.3 | 3.38 | 1.23 | 1.3 | .76 | 1.65 | .7 4 | .9 |
3 1/2X3 X5/8 | 12.5 | 3.67 | 1.2 | 4.11 | 1.76 | 1.1 | .92 | 2.75 | 1.32 | .9 |
3 1/2X3X5/16 | 6.6 | 1.93 | 1.1 | 2.33 | .96 | 1.1 | .81 | 1.58 | .72 | .9 |
3 1/2 X 2 1/2 X 9/16 | 10.6 | 3.13 | 1.2 | 3.76 | 1.62 | 1.1 | .75 | 1.61 | .89 | .7 |
3 1/2X 2 1/2 X1/4 | 4.9 | 1.44 | 1.1 | 1.80 | .75 | 1.1 | .61 | .78 | .11 | .7 |
3 X2 1/2X9/16 | 9.7 | 2.84 | 1.0 | 2.44 | 1.21 | .9 | .79 | 1.53 | .86 | .7 |
3 X2 1/2X 1/4 | 4.5 | 1.31 | .9 | 1.17 | .56 | .9 | .66 | .71 | .40 | .8 |
3x2X1/2 | 7.7 | 2.26 | 1.1 | 1.92 | 1.00 | .9 | .58 | .67 | .47 | .6 |
3 X2 X 1/4 | 4.1 | 1.19 | 1.0 | 1.09 | .54 | 1.0 | .49 | .39 | .26 | .6 |
2 1/4X1 1/2X5/16 | 3.6 | 1.07 | .8 | .53 | .37 | .7 | .42 | .19 | .18 | .4 |
2 1/4X 1 1/2X3/16 | 2.3 | .67 | .8 | .34 | .23 | .7 | .37 | .12 | .11 | .4 |
2 X1 3/4X5/16 | 3.6 | 1.07 | .6 | .40 | .30 | .6 | .52 | .28 | .23 | .5 |
2 X1 3/4X3/16 | 2.3 | .67 | .6 | .26 | .19 | .6 | .47 | .18 | .15 | .5 |
1 3/8X1 1/8X5/16 | 2.5 | .72 | .5 | .13 | .15 | .4 | .38 | .08 | .10 | .3 |
* Distance measured from outside of flange.
 
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