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Free Books / Architecture / The Building Trades Pocketbook / | ![]() |
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Table XX. Radii Of Gyration For Two Angles Placed Back To Back |
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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.
Radii of gyration given correspond to directions of the arrowheads.
|
Size. Inches. |
Thickness. Inches. |
Radii of Gyration. |
|||
|
ro. |
r1. |
r2. |
r3. |
||
|
8X8 |
1/2 |
2.50 |
3.32 |
3.45 |
3.58 |
|
6 X6 |
7/8 |
1.87 |
2.64 |
2.83 |
2.92 |
|
6 X6 |
7/16 |
1.87 |
2.50 |
2.67 |
2.76 |
|
6 X6 |
3/8 |
1.88 |
2.49 |
2.66 |
2.75 |
|
5 X5 |
7/8 |
1.49 |
2.17 |
2.35 |
2.45 |
|
5 X5 |
3/4 |
1.55 |
2.20 |
2.38 |
2.48 |
|
5 X5 |
3/8 |
1.56 |
2.09 |
2.27 |
2.36 |
|
4 X4 |
13/16 |
1.24 |
1.83 |
2.03 |
2.12 |
|
4 X4 |
3/8 |
1.23 |
1.68 |
1.86 |
1.95 |
|
4 X4 |
5/16 |
1.24 |
1.67 |
1.85 |
1.94 |
|
3 1/2x3 1/2 |
5/8 |
1.04 |
1.51 |
1.70 |
1.81 |
|
3 1/2X3 1/2 |
3/8 |
1.07 |
1.47 |
1.66 |
1.75 |
|
3 1/2X3 1/2 |
5/16 |
1.08 |
1.46 |
1.65 |
1.74 |
|
3 X3 |
5/8 |
.94 |
1.40 |
1.59 |
1.69 |
|
3 X3 |
1/4 |
.93 |
1.25 |
1.43 |
1.53 |
|
2 3/4X2 3/4 |
1/4 |
.85 |
1.15 |
1.34 |
1.44 |
|
2 3/4X2 3/4 |
1/2 |
.82 |
1.19 |
1.39 |
1.49 |
|
2 1/2X2 1/2 |
I/2 |
.76 |
1.12 |
1.31 |
1.42 |
|
2 1/2 X 2 1/2 |
1/4 |
.77 |
1.05 |
1.25 |
1.34 |
|
2 1/4X2 1/4 |
1/2 |
.70 |
1.05 |
1.25 |
1.35 |
|
2 1/4X2 1/4 |
1/4 |
.69 |
.96 |
1.14 |
1.24 |
|
2 1/4X2 1/4 |
3/16 |
.69 |
.94 |
1.12 |
1.22 |
|
2 X2 |
1/2 |
.62 |
.95 |
1.15 |
1.26 |
|
2 X2 |
3/16 |
.62 |
.84 |
1.03 |
1.13 |
|
1 1/2X1 1/2 |
1/8 |
.47 |
.63 |
.77 |
.92 |
 
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