| 
Table B-4. 10-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 | 
3.092 | 
0.076 | 
90.12 | 
81.81 | 
0.19 | 
53.13 | 
76.84 | 
23.71 | 
 
| 0.99 | 
3.095 | 
0.090 | 
88.26 | 
78.59 | 
0.23 | 
47.01 | 
74.63 | 
27.62 | 
 
| 0.98 | 
3.098 | 
0.105 | 
86.42 | 
75.46 | 
0.27 | 
42.08 | 
72.58 | 
30.50 | 
 
| 0.97 | 
3.101 | 
0.120 | 
84.60 | 
72.43 | 
0.31 | 
38.00 | 
70.66 | 
32.66 | 
 
| 0.96 | 
3.103 | 
0.135 | 
82.79 | 
69.49 | 
0.35 | 
34.55 | 
68.84 | 
34.29 | 
 
| 0.95 | 
3.106 | 
0.150 | 
81.00 | 
66.64 | 
0.39 | 
31.58 | 
67.11 | 
35.53 | 
 
| 0.94 | 
3.109 | 
0.165 | 
79.23 | 
63.88 | 
0.43 | 
28.99 | 
65.45 | 
36.46 | 
 
| 0.93 | 
3.112 | 
0.180 | 
77.49 | 
61.20 | 
0.47 | 
26.71 | 
63.85 | 
37.15 | 
 
| 0.92 | 
3.115 | 
0.195 | 
75.75 | 
58.61 | 
0.51 | 
24.67 | 
62.31 | 
37.64 | 
 
| 0.91 | 
3.118 | 
0.210 | 
74.04 | 
56.10 | 
0.55 | 
22.85 | 
60.82 | 
37.97 | 
 
| 0.90 | 
3.121 | 
0.225 | 
72.35 | 
53.68 | 
0.60 | 
21.21 | 
59.37 | 
38.16 | 
 
| 0.89 | 
3.123 | 
0.240 | 
70.67 | 
51.33 | 
0.64 | 
19.73 | 
57.96 | 
38.24 | 
 
| 0.88 | 
3.126 | 
0.255 | 
69.02 | 
49.06 | 
0.68 | 
18.37 | 
56.59 | 
38.22 | 
 
| 0.87 | 
3.129 | 
0.270 | 
67.38 | 
46.87 | 
0.72 | 
17.13 | 
55.25 | 
38.12 | 
 
| 0.86 | 
3.132 | 
0.285 | 
65.76 | 
44.75 | 
0.77 | 
15.99 | 
53.94 | 
37.95 | 
 
| 0.85 | 
3.135 | 
0.300 | 
64.16 | 
42.71 | 
0.81 | 
14.94 | 
52.66 | 
37.71 | 
 
| 0.84 | 
3.138 | 
0.316 | 
62.58 | 
40.73 | 
0.86 | 
13.97 | 
51.40 | 
37.43 | 
 
| 0.83 | 
3.141 | 
0.331 | 
61.02 | 
38.83 | 
0.90 | 
13.07 | 
50.16 | 
37.09 | 
 
| 0.82 | 
3.144 | 
0.346 | 
59.48 | 
36.99 | 
0.95 | 
12.24 | 
48.95 | 
36.71 | 
 
| 0.81 | 
3.147 | 
0.361 | 
57.95 | 
35.22 | 
0.99 | 
11.46 | 
47.76 | 
36.29 | 
 
| 0.80 | 
3.150 | 
0.377 | 
56.45 | 
33.51 | 
1.04 | 
10.74 | 
46.59 | 
35.84 | 
 
| 0.79 | 
3.153 | 
0.392 | 
54.96 | 
31.87 | 
1.09 | 
10.07 | 
45.43 | 
35.37 | 
 
| 0.78 | 
3.155 | 
0.407 | 
53.49 | 
30.28 | 
1.13 | 
9.44 | 
44.30 | 
34.86 | 
 
| 0.77 | 
3.158 | 
0.423 | 
52.04 | 
28.76 | 
1.18 | 
8.85 | 
43.18 | 
34.33 | 
 
| 0.76 | 
3.161 | 
0.438 | 
50.61 | 
27.29 | 
1.23 | 
8.30 | 
42.07 | 
33.78 | 
 
| 0.75 | 
3.164 | 
0.454 | 
49.20 | 
25.89 | 
1.28 | 
7.78 | 
40.99 | 
33.21 | 
 
| 0.74 | 
3.167 | 
0.469 | 
47.80 | 
24.53 | 
1.33 | 
7.29 | 
39.91 | 
32.62 | 
 
| 0.73 | 
3.170 | 
0.485 | 
46.43 | 
23.23 | 
1.37 | 
6.83 | 
38.86 | 
32.02 | 
 
| 0.72 | 
3.173 | 
0.500 | 
45.07 | 
21.99 | 
1.42 | 
6.40 | 
37.81 | 
31.41 | 
 
| 0.71 | 
3.176 | 
0.516 | 
43.73 | 
20.79 | 
1.48 | 
6.00 | 
36.78 | 
30.78 | 
 
| 0.70 | 
3.179 | 
0.531 | 
42.41 | 
19.64 | 
1.53 | 
5.62 | 
35.76 | 
30.14 | 
 
| 0.69 | 
3.182 | 
0.547 | 
41.11 | 
18.54 | 
1.58 | 
5.26 | 
34.75 | 
29.49 | 
 
| 0.68 | 
3.185 | 
0.563 | 
39.83 | 
17.49 | 
1.63 | 
4.92 | 
33.76 | 
28.84 | 
 
| 0.67 | 
3.188 | 
0.578 | 
38.57 | 
16.49 | 
1.68 | 
4.61 | 
32.78 | 
28.17 | 
 
| 0.66 | 
3.191 | 
0.594 | 
37.32 | 
15.52 | 
1.74 | 
4.31 | 
31.81 | 
27.50 | 
 
| 0.65 | 
3.194 | 
0.610 | 
36.10 | 
14.60 | 
1.79 | 
4.03 | 
30.85 | 
26.82 | 
 
| 0.64 | 
3.197 | 
0.626 | 
34.89 | 
13.73 | 
1.84 | 
3.76 | 
29.90 | 
26.14 | 
 
| 0.63 | 
3.200 | 
0.641 | 
33.70 | 
12.89 | 
1.90 | 
3.51 | 
28.97 | 
25.46 | 
 
| 0.62 | 
3.203 | 
0.657 | 
32.54 | 
12.09 | 
1.96 | 
3.27 | 
28.05 | 
24.77 | 
 
| 0.61 | 
3.206 | 
0.673 | 
31.38 | 
11.33 | 
2.01 | 
3.05 | 
27.13 | 
24.08 | 
 
| 0.60 | 
3.209 | 
0.689 | 
30.25 | 
10.60 | 
2.07 | 
2.84 | 
26.23 | 
23.39 | 
 
| 0.59 | 
3.212 | 
0.705 | 
29.14 | 
9.91 | 
2.13 | 
2.64 | 
25.34 | 
22.70 | 
 
| 0.58 | 
3.215 | 
0.721 | 
28.04 | 
9.26 | 
2.18 | 
2.46 | 
24.46 | 
22.00 | 
 
| 0.57 | 
3.218 | 
0.737 | 
26.97 | 
8.64 | 
2.24 | 
2.28 | 
23.60 | 
21.31 | 
 
| 0.56 | 
3.221 | 
0.753 | 
25.91 | 
8.05 | 
2.30 | 
2.12 | 
22.74 | 
20.62 | 
 
| 0.55 | 
3.225 | 
0.769 | 
24.87 | 
7.49 | 
2.36 | 
1.96 | 
21.89 | 
19.93 | 
 
| 0.54 | 
3.228 | 
0.785 | 
23.85 | 
6.96 | 
2.42 | 
1.82 | 
21.06 | 
19.24 | 
 
| 0.53 | 
3.231 | 
0.801 | 
22.85 | 
6.46 | 
2.48 | 
1.68 | 
20.24 | 
18.55 | 
 
| 0.52 | 
3.234 | 
0.817 | 
21.87 | 
5.98 | 
2.55 | 
1.55 | 
19.42 | 
17.87 | 
 
| 0.51 | 
3.237 | 
0.833 | 
20.91 | 
5.53 | 
2.61 | 
1.43 | 
18.62 | 
17.19 | 
 
| 0.50 | 
3.240 | 
0.850 | 
19.96 | 
5.11 | 
2.67 | 
1.32 | 
17.83 | 
16.51 | 
 
| 0.49 | 
3.243 | 
0.866 | 
19.04 | 
4.72 | 
2.74 | 
1.22 | 
17.06 | 
15.84 | 
 
| 0.48 | 
3.246 | 
0.882 | 
18.13 | 
4.34 | 
2.80 | 
1.12 | 
16.29 | 
15.17 | 
 
| 0.47 | 
3.249 | 
0.898 | 
17.24 | 
3.99 | 
2.87 | 
1.02 | 
15.54 | 
14.51 | 
 
| 0.46 | 
3.252 | 
0.915 | 
16.37 | 
3.66 | 
2.93 | 
0.94 | 
14.79 | 
13.86 | 
 
| 0.45 | 
3.256 | 
0.931 | 
15.52 | 
3.35 | 
3.00 | 
0.86 | 
14.06 | 
13.21 | 
 
| 0.44 | 
3.259 | 
0.948 | 
14.69 | 
3.07 | 
3.07 | 
0.78 | 
13.35 | 
12.57 | 
 
| 0.43 | 
3.262 | 
0.964 | 
13.87 | 
2.80 | 
3.14 | 
0.71 | 
12.64 | 
11.93 | 
 
| 0.42 | 
3.265 | 
0.980 | 
13.08 | 
2.55 | 
3.21 | 
0.65 | 
11.95 | 
11.30 | 
 
| 0.41 | 
3.268 | 
0.997 | 
12.30 | 
2.31 | 
3.28 | 
0.59 | 
11.27 | 
10.68 | 
 
| 0.40 | 
3.271 | 
1.013 | 
11.54 | 
2.09 | 
3.35 | 
0.53 | 
10.60 | 
10.07 | 
 
| 0.39 | 
3.274 | 
1.030 | 
10.80 | 
1.89 | 
3.42 | 
0.48 | 
9.95 | 
9.47 | 
 
| 0.38 | 
3.278 | 
1.047 | 
10.08 | 
1.71 | 
3.50 | 
0.43 | 
9.31 | 
8.88 | 
 
| 0.37 | 
3.281 | 
1.063 | 
9.38 | 
1.53 | 
3.57 | 
0.39 | 
8.68 | 
8.29 | 
 
| 0.36 | 
3.284 | 
1.080 | 
8.70 | 
1.37 | 
3.65 | 
0.35 | 
8.06 | 
7.72 | 
 
| 0.35 | 
3.287 | 
1.096 | 
8.03 | 
1.23 | 
3.72 | 
0.31 | 
7.46 | 
7.16 | 
 
| 0.34 | 
3.290 | 
1.113 | 
7.39 | 
1.09 | 
3.80 | 
0.28 | 
6.88 | 
6.60 | 
 
| 0.33 | 
3.293 | 
1.130 | 
6.76 | 
0.97 | 
3.88 | 
0.24 | 
6.31 | 
6.06 | 
 
| 0.32 | 
3.297 | 
1.147 | 
6.15 | 
0.86 | 
3.96 | 
0.22 | 
5.75 | 
5.53 | 
 
| 0.31 | 
3.300 | 
1.163 | 
5.56 | 
0.76 | 
4.04 | 
0.19 | 
5.21 | 
5.02 | 
 
| 0.30 | 
3.303 | 
1.180 | 
4.99 | 
0.66 | 
4.12 | 
0.17 | 
4.68 | 
4.51 | 
 
| 0.29 | 
3.306 | 
1.197 | 
4.44 | 
0.58 | 
4.20 | 
0.15 | 
4.16 | 
4.02 | 
 
| 0.28 | 
3.310 | 
1.214 | 
3.91 | 
0.50 | 
4.28 | 
0.13 | 
3.67 | 
3.54 | 
 
| 0.27 | 
3.313 | 
1.231 | 
3.39 | 
0.43 | 
4.37 | 
0.11 | 
3.18 | 
3.07 | 
 
| 0.26 | 
3.316 | 
1.248 | 
2.90 | 
0.37 | 
4.45 | 
0.09 | 
2.72 | 
2.62 | 
 
| 0.25 | 
3.319 | 
1.265 | 
2.42 | 
0.32 | 
4.54 | 
0.08 | 
2.27 | 
2.19 | 
 
| 0.24 | 
3.323 | 
1.282 | 
1.96 | 
0.27 | 
4.63 | 
0.07 | 
1.83 | 
1.76 | 
 
| 0.23 | 
3.326 | 
1.299 | 
1.52 | 
0.23 | 
4.72 | 
0.06 | 
1.41 | 
1.35 | 
 
| 0.22 | 
3.329 | 
1.316 | 
1.10 | 
0.19 | 
4.81 | 
0.05 | 
1.01 | 
0.96 | 
 
| 0.21 | 
3.332 | 
1.333 | 
0.70 | 
0.16 | 
4.90 | 
0.04 | 
0.62 | 
0.58 | 
 
| 0.20 | 
3.336 | 
1.351 | 
0.32 | 
0.13 | 
4.99 | 
0.03 | 
0.25 | 
0.22 | 
 
 
 |