|
Table B-5. 12-sided Spar, Polygon Exterior
|
|
Ratio A
or
I.D./O.D.
|
Ratio (M)
or
(O.D./L)
|
Ratio (K)
or
(H/L)
|
Weight Saving at same size
|
Strengh Loss at same size
|
Outside Waste
|
Size Increase for same strength
|
Weight Saving at same strength
|
Arbitrary Score
|
|
|
|
|
(%)
|
(%)
|
(%)
|
(%)
|
(%)
|
|
| 1.00 |
3.741 |
0.064 |
93.14 |
87.05 |
0.10 |
66.70 |
80.95 |
14.24 |
| 0.99 |
3.743 |
0.082 |
91.24 |
83.62 |
0.13 |
57.19 |
78.36 |
21.17 |
| 0.98 |
3.745 |
0.100 |
89.36 |
80.29 |
0.16 |
50.09 |
76.04 |
25.95 |
| 0.97 |
3.748 |
0.118 |
87.50 |
77.07 |
0.19 |
44.50 |
73.90 |
29.40 |
| 0.96 |
3.750 |
0.136 |
85.66 |
73.94 |
0.22 |
39.96 |
71.91 |
31.95 |
| 0.95 |
3.753 |
0.155 |
83.83 |
70.90 |
0.25 |
36.16 |
70.03 |
33.87 |
| 0.94 |
3.755 |
0.173 |
82.03 |
67.97 |
0.28 |
32.92 |
68.25 |
35.33 |
| 0.93 |
3.758 |
0.191 |
80.24 |
65.12 |
0.31 |
30.12 |
66.55 |
36.42 |
| 0.92 |
3.760 |
0.209 |
78.48 |
62.36 |
0.34 |
27.67 |
64.92 |
37.24 |
| 0.91 |
3.763 |
0.228 |
76.73 |
59.70 |
0.37 |
25.51 |
63.34 |
37.84 |
| 0.90 |
3.765 |
0.246 |
75.00 |
57.11 |
0.40 |
23.57 |
61.82 |
38.25 |
| 0.89 |
3.767 |
0.264 |
73.29 |
54.62 |
0.44 |
21.84 |
60.35 |
38.52 |
| 0.88 |
3.770 |
0.283 |
71.60 |
52.20 |
0.47 |
20.27 |
58.92 |
38.65 |
| 0.87 |
3.772 |
0.301 |
69.93 |
49.87 |
0.50 |
18.84 |
57.53 |
38.68 |
| 0.86 |
3.775 |
0.320 |
68.28 |
47.62 |
0.53 |
17.54 |
56.17 |
38.62 |
| 0.85 |
3.777 |
0.338 |
66.64 |
45.44 |
0.57 |
16.35 |
54.84 |
38.49 |
| 0.84 |
3.780 |
0.356 |
65.03 |
43.34 |
0.60 |
15.26 |
53.54 |
38.28 |
| 0.83 |
3.782 |
0.375 |
63.44 |
41.31 |
0.63 |
14.25 |
52.27 |
38.02 |
| 0.82 |
3.785 |
0.394 |
61.86 |
39.36 |
0.67 |
13.32 |
51.02 |
37.70 |
| 0.81 |
3.787 |
0.412 |
60.30 |
37.47 |
0.70 |
12.46 |
49.80 |
37.34 |
| 0.80 |
3.790 |
0.431 |
58.77 |
35.66 |
0.74 |
11.65 |
48.60 |
36.94 |
| 0.79 |
3.792 |
0.449 |
57.25 |
33.91 |
0.77 |
10.91 |
47.41 |
36.51 |
| 0.78 |
3.795 |
0.468 |
55.75 |
32.22 |
0.81 |
10.21 |
46.25 |
36.04 |
| 0.77 |
3.797 |
0.486 |
54.27 |
30.60 |
0.85 |
9.56 |
45.10 |
35.54 |
| 0.76 |
3.800 |
0.505 |
52.81 |
29.04 |
0.88 |
8.96 |
43.98 |
35.02 |
| 0.75 |
3.802 |
0.524 |
51.37 |
27.54 |
0.92 |
8.39 |
42.86 |
34.48 |
| 0.74 |
3.805 |
0.543 |
49.94 |
26.10 |
0.96 |
7.86 |
41.77 |
33.91 |
| 0.73 |
3.807 |
0.561 |
48.54 |
24.72 |
0.99 |
7.36 |
40.69 |
33.33 |
| 0.72 |
3.810 |
0.580 |
47.15 |
23.39 |
1.03 |
6.89 |
39.62 |
32.73 |
| 0.71 |
3.812 |
0.599 |
45.79 |
22.12 |
1.07 |
6.45 |
38.57 |
32.12 |
| 0.70 |
3.815 |
0.618 |
44.44 |
20.90 |
1.11 |
6.04 |
37.53 |
31.50 |
| 0.69 |
3.817 |
0.637 |
43.12 |
19.73 |
1.15 |
5.65 |
36.51 |
30.86 |
| 0.68 |
3.820 |
0.655 |
41.81 |
18.61 |
1.19 |
5.28 |
35.50 |
30.21 |
| 0.67 |
3.822 |
0.674 |
40.52 |
17.54 |
1.23 |
4.94 |
34.50 |
29.56 |
| 0.66 |
3.825 |
0.693 |
39.25 |
16.52 |
1.27 |
4.62 |
33.51 |
28.89 |
| 0.65 |
3.827 |
0.712 |
38.00 |
15.54 |
1.31 |
4.31 |
32.53 |
28.22 |
| 0.64 |
3.830 |
0.731 |
36.76 |
14.60 |
1.35 |
4.03 |
31.57 |
27.54 |
| 0.63 |
3.833 |
0.750 |
35.55 |
13.71 |
1.39 |
3.76 |
30.62 |
26.86 |
| 0.62 |
3.835 |
0.769 |
34.36 |
12.86 |
1.43 |
3.50 |
29.68 |
26.18 |
| 0.61 |
3.838 |
0.788 |
33.18 |
12.05 |
1.48 |
3.26 |
28.75 |
25.49 |
| 0.60 |
3.840 |
0.807 |
32.03 |
11.28 |
1.52 |
3.04 |
27.84 |
24.80 |
| 0.59 |
3.843 |
0.826 |
30.89 |
10.55 |
1.56 |
2.83 |
26.93 |
24.10 |
| 0.58 |
3.845 |
0.846 |
29.77 |
9.85 |
1.61 |
2.63 |
26.04 |
23.41 |
| 0.57 |
3.848 |
0.865 |
28.68 |
9.19 |
1.65 |
2.44 |
25.15 |
22.72 |
| 0.56 |
3.850 |
0.884 |
27.60 |
8.56 |
1.70 |
2.26 |
24.28 |
22.02 |
| 0.55 |
3.853 |
0.903 |
26.54 |
7.97 |
1.74 |
2.10 |
23.42 |
21.33 |
| 0.54 |
3.856 |
0.922 |
25.50 |
7.40 |
1.79 |
1.94 |
22.58 |
20.63 |
| 0.53 |
3.858 |
0.942 |
24.47 |
6.87 |
1.84 |
1.79 |
21.74 |
19.94 |
| 0.52 |
3.861 |
0.961 |
23.47 |
6.36 |
1.89 |
1.66 |
20.91 |
19.26 |
| 0.51 |
3.863 |
0.980 |
22.49 |
5.89 |
1.93 |
1.53 |
20.10 |
18.57 |
| 0.50 |
3.866 |
0.999 |
21.52 |
5.44 |
1.98 |
1.41 |
19.30 |
17.89 |
| 0.49 |
3.869 |
1.019 |
20.58 |
5.02 |
2.03 |
1.30 |
18.51 |
17.21 |
| 0.48 |
3.871 |
1.038 |
19.65 |
4.62 |
2.08 |
1.19 |
17.73 |
16.54 |
| 0.47 |
3.874 |
1.058 |
18.75 |
4.25 |
2.13 |
1.09 |
16.96 |
15.87 |
| 0.46 |
3.876 |
1.077 |
17.86 |
3.90 |
2.18 |
1.00 |
16.21 |
15.21 |
| 0.45 |
3.879 |
1.096 |
16.99 |
3.57 |
2.23 |
0.91 |
15.47 |
14.55 |
| 0.44 |
3.882 |
1.116 |
16.14 |
3.26 |
2.29 |
0.83 |
14.74 |
13.90 |
| 0.43 |
3.884 |
1.135 |
15.31 |
2.98 |
2.34 |
0.76 |
14.02 |
13.26 |
| 0.42 |
3.887 |
1.155 |
14.50 |
2.71 |
2.39 |
0.69 |
13.31 |
12.62 |
| 0.41 |
3.889 |
1.175 |
13.70 |
2.46 |
2.45 |
0.62 |
12.62 |
12.00 |
| 0.40 |
3.892 |
1.194 |
12.93 |
2.23 |
2.50 |
0.57 |
11.94 |
11.38 |
| 0.39 |
3.895 |
1.214 |
12.18 |
2.01 |
2.56 |
0.51 |
11.28 |
10.77 |
| 0.38 |
3.897 |
1.233 |
11.44 |
1.82 |
2.62 |
0.46 |
10.63 |
10.17 |
| 0.37 |
3.900 |
1.253 |
10.72 |
1.63 |
2.67 |
0.41 |
9.99 |
9.57 |
| 0.36 |
3.903 |
1.273 |
10.03 |
1.46 |
2.73 |
0.37 |
9.36 |
8.99 |
| 0.35 |
3.905 |
1.292 |
9.35 |
1.31 |
2.79 |
0.33 |
8.75 |
8.42 |
| 0.34 |
3.908 |
1.312 |
8.69 |
1.16 |
2.85 |
0.29 |
8.15 |
7.86 |
| 0.33 |
3.911 |
1.332 |
8.05 |
1.03 |
2.91 |
0.26 |
7.57 |
7.31 |
| 0.32 |
3.913 |
1.352 |
7.43 |
0.91 |
2.97 |
0.23 |
7.00 |
6.77 |
| 0.31 |
3.916 |
1.372 |
6.83 |
0.80 |
3.03 |
0.20 |
6.45 |
6.25 |
| 0.30 |
3.918 |
1.391 |
6.25 |
0.71 |
3.10 |
0.18 |
5.91 |
5.74 |
| 0.29 |
3.921 |
1.411 |
5.68 |
0.62 |
3.16 |
0.15 |
5.39 |
5.24 |
| 0.28 |
3.924 |
1.431 |
5.14 |
0.54 |
3.22 |
0.13 |
4.88 |
4.75 |
| 0.27 |
3.926 |
1.451 |
4.61 |
0.46 |
3.29 |
0.12 |
4.39 |
4.27 |
| 0.26 |
3.929 |
1.471 |
4.11 |
0.40 |
3.36 |
0.10 |
3.91 |
3.82 |
| 0.25 |
3.932 |
1.491 |
3.62 |
0.34 |
3.42 |
0.09 |
3.45 |
3.37 |
| 0.24 |
3.935 |
1.511 |
3.15 |
0.29 |
3.49 |
0.07 |
3.01 |
2.94 |
| 0.23 |
3.937 |
1.531 |
2.70 |
0.24 |
3.56 |
0.06 |
2.58 |
2.52 |
| 0.22 |
3.940 |
1.551 |
2.27 |
0.20 |
3.63 |
0.05 |
2.17 |
2.12 |
| 0.21 |
3.943 |
1.571 |
1.86 |
0.17 |
3.70 |
0.04 |
1.78 |
1.74 |
| 0.20 |
3.945 |
1.592 |
1.47 |
0.14 |
3.77 |
0.03 |
1.40 |
1.37 |
|