|
Table A-1. 6-sided Spar, Round 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
|
|
|
|
|
(%)
|
(%)
|
(%)
|
(%)
|
(%)
|
|
| 0.99 |
1.796 |
0.128 |
81.05 |
96.06 |
35.76 |
124.45 |
4.55 |
-119.89 |
| 0.98 |
1.800 |
0.136 |
79.42 |
92.24 |
33.96 |
89.45 |
26.15 |
-63.29 |
| 0.97 |
1.804 |
0.144 |
77.81 |
88.53 |
32.37 |
71.83 |
34.49 |
-37.34 |
| 0.96 |
1.808 |
0.152 |
76.22 |
84.93 |
30.94 |
60.51 |
38.72 |
-21.79 |
| 0.95 |
1.812 |
0.161 |
74.64 |
81.45 |
29.67 |
52.38 |
41.11 |
-11.27 |
| 0.94 |
1.816 |
0.169 |
73.07 |
78.07 |
28.52 |
46.14 |
42.49 |
-3.64 |
| 0.93 |
1.821 |
0.177 |
71.53 |
74.81 |
27.48 |
41.15 |
43.27 |
2.13 |
| 0.92 |
1.825 |
0.185 |
70.00 |
71.64 |
26.53 |
37.03 |
43.66 |
6.63 |
| 0.91 |
1.829 |
0.194 |
68.48 |
68.57 |
25.67 |
33.56 |
43.78 |
10.22 |
| 0.90 |
1.833 |
0.202 |
66.99 |
65.61 |
24.88 |
30.58 |
43.70 |
13.12 |
| 0.89 |
1.837 |
0.211 |
65.51 |
62.74 |
24.16 |
28.00 |
43.49 |
15.49 |
| 0.88 |
1.842 |
0.219 |
64.04 |
59.97 |
23.50 |
25.72 |
43.17 |
17.45 |
| 0.87 |
1.846 |
0.228 |
62.60 |
57.29 |
22.89 |
23.70 |
42.76 |
19.07 |
| 0.86 |
1.850 |
0.236 |
61.16 |
54.70 |
22.33 |
21.89 |
42.30 |
20.41 |
| 0.85 |
1.854 |
0.245 |
59.75 |
52.20 |
21.81 |
20.27 |
41.78 |
21.52 |
| 0.84 |
1.859 |
0.253 |
58.35 |
49.79 |
21.33 |
18.79 |
41.23 |
22.43 |
| 0.83 |
1.863 |
0.262 |
56.97 |
47.46 |
20.88 |
17.46 |
40.64 |
23.18 |
| 0.82 |
1.867 |
0.271 |
55.61 |
45.21 |
20.47 |
16.23 |
40.02 |
23.79 |
| 0.81 |
1.872 |
0.279 |
54.26 |
43.05 |
20.08 |
15.11 |
39.39 |
24.28 |
| 0.80 |
1.876 |
0.288 |
52.93 |
40.96 |
19.72 |
14.08 |
38.74 |
24.66 |
| 0.79 |
1.881 |
0.297 |
51.61 |
38.95 |
19.39 |
13.13 |
38.07 |
24.94 |
| 0.78 |
1.885 |
0.306 |
50.31 |
37.02 |
19.08 |
12.25 |
37.39 |
25.14 |
| 0.77 |
1.889 |
0.315 |
49.03 |
35.15 |
18.79 |
11.44 |
36.71 |
25.27 |
| 0.76 |
1.894 |
0.324 |
47.77 |
33.36 |
18.53 |
10.68 |
36.01 |
25.33 |
| 0.75 |
1.898 |
0.333 |
46.52 |
31.64 |
18.27 |
9.98 |
35.31 |
25.34 |
| 0.74 |
1.903 |
0.342 |
45.29 |
29.99 |
18.04 |
9.32 |
34.61 |
25.29 |
| 0.73 |
1.907 |
0.351 |
44.07 |
28.40 |
17.82 |
8.71 |
33.90 |
25.19 |
| 0.72 |
1.912 |
0.360 |
42.87 |
26.87 |
17.62 |
8.14 |
33.19 |
25.05 |
| 0.71 |
1.917 |
0.369 |
41.69 |
25.41 |
17.43 |
7.60 |
32.48 |
24.88 |
| 0.70 |
1.921 |
0.378 |
40.52 |
24.01 |
17.26 |
7.11 |
31.77 |
24.67 |
| 0.69 |
1.926 |
0.388 |
39.37 |
22.67 |
17.09 |
6.64 |
31.06 |
24.42 |
| 0.68 |
1.930 |
0.397 |
38.24 |
21.38 |
16.94 |
6.20 |
30.35 |
24.15 |
| 0.67 |
1.935 |
0.406 |
37.12 |
20.15 |
16.80 |
5.79 |
29.64 |
23.85 |
| 0.66 |
1.940 |
0.416 |
36.02 |
18.97 |
16.67 |
5.40 |
28.93 |
23.53 |
| 0.65 |
1.945 |
0.425 |
34.94 |
17.85 |
16.55 |
5.04 |
28.22 |
23.18 |
| 0.64 |
1.949 |
0.434 |
33.87 |
16.78 |
16.43 |
4.70 |
27.51 |
22.82 |
| 0.63 |
1.954 |
0.444 |
32.82 |
15.75 |
16.33 |
4.38 |
26.81 |
22.43 |
| 0.62 |
1.959 |
0.454 |
31.79 |
14.78 |
16.24 |
4.08 |
26.11 |
22.03 |
| 0.61 |
1.964 |
0.463 |
30.77 |
13.85 |
16.15 |
3.80 |
25.42 |
21.62 |
| 0.60 |
1.968 |
0.473 |
29.77 |
12.96 |
16.07 |
3.53 |
24.72 |
21.19 |
| 0.59 |
1.973 |
0.483 |
28.79 |
12.12 |
16.00 |
3.28 |
24.04 |
20.75 |
| 0.58 |
1.978 |
0.492 |
27.82 |
11.32 |
15.93 |
3.05 |
23.35 |
20.31 |
| 0.57 |
1.983 |
0.502 |
26.87 |
10.56 |
15.87 |
2.83 |
22.67 |
19.85 |
| 0.56 |
1.988 |
0.512 |
25.93 |
9.83 |
15.82 |
2.62 |
22.00 |
19.38 |
| 0.55 |
1.993 |
0.522 |
25.02 |
9.15 |
15.78 |
2.43 |
21.33 |
18.90 |
| 0.54 |
1.998 |
0.532 |
24.12 |
8.50 |
15.74 |
2.25 |
20.67 |
18.42 |
| 0.53 |
2.003 |
0.542 |
23.23 |
7.89 |
15.70 |
2.08 |
20.01 |
17.93 |
| 0.52 |
2.008 |
0.552 |
22.36 |
7.31 |
15.67 |
1.92 |
19.36 |
17.44 |
| 0.51 |
2.013 |
0.562 |
21.51 |
6.77 |
15.65 |
1.77 |
18.71 |
16.95 |
| 0.50 |
2.018 |
0.572 |
20.67 |
6.25 |
15.63 |
1.63 |
18.07 |
16.45 |
| 0.49 |
2.023 |
0.582 |
19.86 |
5.76 |
15.62 |
1.50 |
17.44 |
15.95 |
| 0.48 |
2.028 |
0.593 |
19.05 |
5.31 |
15.61 |
1.37 |
16.82 |
15.44 |
| 0.47 |
2.034 |
0.603 |
18.27 |
4.88 |
15.60 |
1.26 |
16.20 |
14.94 |
| 0.46 |
2.039 |
0.613 |
17.50 |
4.48 |
15.60 |
1.15 |
15.59 |
14.44 |
| 0.45 |
2.044 |
0.624 |
16.75 |
4.10 |
15.61 |
1.05 |
14.99 |
13.93 |
| 0.44 |
2.049 |
0.634 |
16.01 |
3.75 |
15.62 |
0.96 |
14.39 |
13.43 |
| 0.43 |
2.054 |
0.645 |
15.29 |
3.42 |
15.63 |
0.87 |
13.80 |
12.93 |
| 0.42 |
2.060 |
0.655 |
14.59 |
3.11 |
15.65 |
0.79 |
13.23 |
12.43 |
| 0.41 |
2.065 |
0.666 |
13.90 |
2.83 |
15.67 |
0.72 |
12.66 |
11.94 |
| 0.40 |
2.070 |
0.677 |
13.23 |
2.56 |
15.70 |
0.65 |
12.10 |
11.45 |
| 0.39 |
2.076 |
0.687 |
12.58 |
2.31 |
15.72 |
0.59 |
11.55 |
10.96 |
| 0.38 |
2.081 |
0.698 |
11.94 |
2.09 |
15.76 |
0.53 |
11.01 |
10.48 |
| 0.37 |
2.087 |
0.709 |
11.32 |
1.87 |
15.79 |
0.47 |
10.48 |
10.00 |
| 0.36 |
2.092 |
0.720 |
10.72 |
1.68 |
15.83 |
0.42 |
9.96 |
9.53 |
| 0.35 |
2.097 |
0.731 |
10.13 |
1.50 |
15.88 |
0.38 |
9.45 |
9.07 |
| 0.34 |
2.103 |
0.742 |
9.56 |
1.34 |
15.92 |
0.34 |
8.95 |
8.61 |
| 0.33 |
2.109 |
0.753 |
9.01 |
1.19 |
15.97 |
0.30 |
8.46 |
8.16 |
| 0.32 |
2.114 |
0.764 |
8.47 |
1.05 |
16.03 |
0.26 |
7.98 |
7.72 |
| 0.31 |
2.120 |
0.775 |
7.95 |
0.92 |
16.08 |
0.23 |
7.52 |
7.29 |
| 0.30 |
2.125 |
0.787 |
7.44 |
0.81 |
16.14 |
0.20 |
7.07 |
6.86 |
| 0.29 |
2.131 |
0.798 |
6.96 |
0.71 |
16.21 |
0.18 |
6.62 |
6.45 |
| 0.28 |
2.137 |
0.809 |
6.48 |
0.61 |
16.27 |
0.15 |
6.19 |
6.04 |
| 0.27 |
2.142 |
0.821 |
6.03 |
0.53 |
16.34 |
0.13 |
5.78 |
5.64 |
| 0.26 |
2.148 |
0.832 |
5.59 |
0.46 |
16.41 |
0.11 |
5.37 |
5.26 |
| 0.25 |
2.154 |
0.844 |
5.17 |
0.39 |
16.49 |
0.10 |
4.98 |
4.89 |
| 0.24 |
2.160 |
0.855 |
4.76 |
0.33 |
16.57 |
0.08 |
4.61 |
4.52 |
| 0.23 |
2.166 |
0.867 |
4.37 |
0.28 |
16.65 |
0.07 |
4.24 |
4.17 |
| 0.22 |
2.171 |
0.879 |
4.00 |
0.23 |
16.74 |
0.06 |
3.89 |
3.83 |
| 0.21 |
2.177 |
0.891 |
3.65 |
0.19 |
16.83 |
0.05 |
3.55 |
3.50 |
| 0.20 |
2.183 |
0.903 |
3.31 |
0.16 |
16.92 |
0.04 |
3.23 |
3.19 |
|