My bridge was designed with two main goals, make it compact
and spread the tension into two parts, top and bottom, I felt this would hold
the weight and make the bridge light as can be.
Bridge in Drawing board mode
With Truck in view mode
# Material Type Cross Section Size (mm) Length (m) Compression Force Compression
Strength Compression Status Tension Force Tension Strength Tension
Status
1 HSS Hollow
Tube 200x200x10 4.00 1441.03 1946.41 OK 0.00 2490.90 OK
2 HSS Hollow
Tube 170x170x8 4.00 1213.09 1234.91 OK 0.00 1699.06 OK
3 HSS Hollow
Tube 100x100x5 4.00 213.27 273.05 OK 0.00 622.73 OK
4 HSS Hollow
Tube 130x130x6 4.00 437.99 587.81 OK 0.00 975.38 OK
5 HSS Hollow
Tube 80x80x4 4.00 57.94 114.70 OK 153.82 398.54 OK
6 HSS Hollow
Tube 110x110x5 4.00 261.91 346.95 OK 0.00 688.28 OK
7 HSS Hollow
Tube 80x80x4 4.00 50.05 114.70 OK 170.08 398.54 OK
8 HSS Hollow
Tube 130x130x6 4.00 437.66 587.81 OK 0.00 975.38 OK
9 HSS Hollow
Tube 110x110x5 4.00 219.77 346.95 OK 0.00 688.28 OK
10 HSS Hollow
Tube 170x170x8 4.00 1165.06 1234.91 OK 0.00 1699.06 OK
11 HSS Hollow
Tube 200x200x10 4.00 1412.05 1946.41 OK 0.00 2490.90 OK
12 HSS Hollow
Tube 200x200x10 4.00 1721.12 1946.41 OK 0.00 2490.90 OK
13 HSS Hollow
Tube 240x240x12 4.00 2225.39 2972.71 OK 0.00 3586.90 OK
14 HSS Hollow
Tube 240x240x12 4.00 2396.91 2972.71 OK 0.00 3586.90 OK
15 HSS Hollow
Tube 240x240x12 4.00 2439.16 2972.71 OK 0.00 3586.90 OK
16 HSS Hollow
Tube 240x240x12 4.00 2456.75 2972.71 OK 0.00 3586.90 OK
17 HSS Hollow
Tube 240x240x12 4.00 2382.71 2972.71 OK 0.00 3586.90 OK
18 HSS Hollow
Tube 240x240x12 4.00 2180.86 2972.71 OK 0.00 3586.90 OK
19 HSS Hollow
Tube 200x200x10 4.00 1658.65 1946.41 OK 0.00 2490.90 OK
20 HSS Hollow
Tube 170x170x8 2.83 1330.42 1409.88 OK 0.00 1699.06 OK
21 HSS Hollow
Tube 170x170x8 2.83 1288.17 1409.88 OK 0.00 1699.06 OK
22 HSS Hollow
Tube 190x190x9 2.83 0.00 1819.47 OK 2037.92 2135.62 OK
23 HSS Hollow
Tube 100x100x5 4.00 0.00 273.05 OK 576.13 622.73 OK
24 HSS Hollow
Tube 35x35x2 4.00 0.00 4.70 OK 71.25 86.53 OK
25 HSS Hollow
Tube 100x100x5 4.00 62.44 273.05 OK 84.42 622.73 OK
26 HSS Hollow
Tube 60x60x3 4.00 0.00 36.29 OK 199.77 224.18 OK
27 HSS Hollow
Tube 80x80x4 4.00 2.33 114.70 OK 266.11 398.54 OK
28 HSS Hollow
Tube 90x90x4 4.00 34.16 166.09 OK 262.97 450.98 OK
29 HSS Hollow
Tube 60x60x3 4.00 0.00 36.29 OK 217.75 224.18 OK
30 HSS Hollow
Tube 100x100x5 4.00 59.73 273.05 OK 95.92 622.73 OK
31 HSS Hollow
Tube 40x40x2 4.00 0.00 7.17 OK 82.63 99.64 OK
32 HSS Hollow
Tube 100x100x5 4.00 0.00 273.05 OK 559.33 622.73 OK
33 HSS Hollow
Tube 190x190x9 2.83 0.00 1819.47 OK 1996.94 2135.62 OK
34 HSS Hollow
Tube 200x200x10 2.83 1318.88 2143.16 OK 0.00 2490.90 OK
35 HSS Hollow
Tube 200x200x10 2.83 1379.71 2143.16 OK 0.00 2490.90 OK
36 HSS Hollow
Tube 60x60x3 4.00 0.00 36.29 OK 171.81 224.18 OK
37 HSS Hollow
Tube 60x60x3 4.00 0.00 36.29 OK 163.44 224.18 OK
38 HSS Hollow
Tube 80x80x4 2.83 0.00 206.83 OK 279.32 398.54 OK
39 HSS Hollow
Tube 100x100x5 2.83 397.96 401.36 OK 0.00 622.73 OK
40 HSS Hollow
Tube 90x90x4 2.83 0.00 266.95 OK 392.28 450.98 OK
41 HSS Hollow
Tube 80x80x4 2.83 0.00 206.83 OK 382.19 398.54 OK
42 HSS Hollow
Tube 90x90x4 2.83 0.00 266.95 OK 260.04 450.98 OK
43 HSS Hollow
Tube 80x80x4 2.83 131.58 206.83 OK 133.95 398.54 OK
44 HSS Hollow
Tube 80x80x4 2.83 140.37 206.83 OK 125.16 398.54 OK
45 HSS Hollow
Tube 80x80x4 2.83 108.21 206.83 OK 150.72 398.54 OK
46 HSS Hollow
Tube 80x80x4 2.83 157.14 206.83 OK 101.78 398.54 OK
47 HSS Hollow
Tube 90x90x4 2.83 0.00 266.95 OK 232.48 450.98 OK
48 HSS Hollow
Tube 80x80x4 2.83 0.00 206.83 OK 384.87 398.54 OK
49 HSS Hollow
Tube 90x90x4 2.83 0.00 266.95 OK 433.17 450.98 OK
50 HSS Hollow
Tube 110x110x5 2.83 438.88 475.64 OK 0.00 688.28 OK
51 HSS Hollow
Tube 80x80x4 2.83 0.00 206.83 OK 283.45 398.54 OK
52 HSS Hollow
Tube 140x140x7 2.83 0.00 950.00 OK 1103.61 1220.54 OK
53 HSS Hollow
Tube 100x100x5 2.83 59.14 401.36 OK 232.76 622.73 OK
54 HSS Hollow
Tube 120x120x6 2.83 560.34 650.14 OK 0.00 896.72 OK
55 HSS Hollow
Tube 90x90x4 2.83 215.51 266.95 OK 0.00 450.98 OK
56 HSS Hollow
Tube 75x75x3 2.83 0.00 137.10 OK 209.12 283.18 OK
57 HSS Hollow
Tube 120x120x6 2.83 608.03 650.14 OK 0.00 896.72 OK
58 HSS Hollow
Tube 120x120x6 2.83 546.39 650.14 OK 0.00 896.72 OK
59 HSS Hollow
Tube 90x90x4 2.83 248.66 266.95 OK 163.63 450.98 OK
60 HSS Hollow
Tube 90x90x4 2.83 170.12 266.95 OK 242.18 450.98 OK
61 HSS Hollow
Tube 120x120x6 2.83 542.53 650.14 OK 0.00 896.72 OK
62 HSS Hollow
Tube 120x120x6 2.83 625.84 650.14 OK 0.00 896.72 OK
63 HSS Hollow
Tube 75x75x3 2.83 20.38 137.10 OK 170.10 283.18 OK
64 HSS Hollow
Tube 80x80x4 2.83 176.46 206.83 OK 14.02 398.54 OK
65 HSS Hollow
Tube 120x120x6 2.83 538.54 650.14 OK 0.00 896.72 OK
66 HSS Hollow
Tube 100x100x5 2.83 102.26 401.36 OK 234.00 622.73 OK
67 HSS Hollow
Tube 140x140x7 2.83 0.00 950.00 OK 1057.52 1220.54 OK
68 HSS Hollow
Tube 120x120x6 2.83 575.47 650.14 OK 0.00 896.72 OK
69 HSS Hollow
Tube 120x120x6 2.83 592.00 650.14 OK 0.00 896.72 OK
70 HSS Hollow
Tube 100x100x5 5.00 146.01 179.21 OK 132.55 622.73 OK
71 HSS Hollow
Tube 100x100x5 5.00 139.89 179.21 OK 138.67 622.73 OK
72 HSS Hollow
Tube 120x120x6 5.00 239.76 368.26 OK 80.17 896.72 OK
73 HSS Hollow
Tube 90x90x4 2.00 0.00 337.72 OK 404.31 450.98 OK
74 HSS Hollow
Tube 220x220x11 4.12 0.00 2411.10 OK 2529.19 3013.99 OK
75 HSS Hollow
Tube 200x200x10 4.00 0.00 1946.41 OK 2367.23 2490.90 OK
76 HSS Hollow
Tube 200x200x10 4.00 0.00 1946.41 OK 2367.23 2490.90 OK
77 HSS Hollow
Tube 220x220x11 4.12 0.00 2411.10 OK 2516.28 3013.99 OK
78 HSS Hollow
Tube 90x90x4 2.00 0.00 337.72 OK 408.73 450.98 OK
79 HSS Hollow
Tube 120x120x6 5.00 229.38 368.26 OK 82.99 896.72 OK
80 HSS Hollow
Tube 130x130x6 3.00 665.55 716.45 OK 0.00 975.38 OK
81 HSS Hollow
Tube 30x30x2 3.00 0.00 5.11 OK 2.96 73.42 OK
82 HSS Hollow
Tube 130x130x6 3.00 675.96 716.45 OK 0.00 975.38 OK
83 HSS Hollow
Tube 110x110x5 4.47 0.00 296.32 OK 672.65 688.28 OK
84 HSS Hollow
Tube 110x110x5 2.00 497.04 556.90 OK 0.00 688.28 OK
85 HSS Hollow
Tube 180x180x9 4.00 0.00 1506.95 OK 1939.27 2017.63 OK
86 HSS Hollow
Tube 180x180x9 4.00 0.00 1506.95 OK 1935.83 2017.63 OK
87 HSS Hollow
Tube 110x110x5 2.00 497.70 556.90 OK 0.00 688.28 OK
88 HSS Hollow
Tube 110x110x5 4.47 0.00 296.32 OK 661.20 688.28 OK
89 HSS Hollow
Tube 200x200x10 8.25 0.00 1040.87 OK 1963.88 2490.90 OK
90 HSS Hollow
Tube 90x90x4 4.47 106.78 132.87 OK 95.29 450.98 OK
91 HSS Hollow
Tube 200x200x10 8.25 0.00 1040.87 OK 1955.00 2490.90 OK
92 HSS Hollow
Tube 90x90x4 4.47 105.89 132.87 OK 87.22 450.98 OK
The bridge change material and cross section type numerous
times to see which was most cost effective. The original bridge was twice as tall;
all the bars were condensed because after testing length strengths I came to
the conclusion that shorter lengths were not only stronger but cheaper. The Truss
on top had and extra layer but it was excess weight with little function.
Current cost: $245174.28
I feel that eventually I could drop the price by $30000-$50000
I feel that eventually I could drop the price by $30000-$50000
I learned that the bridges aren’t always perfect on each
side and sometimes only one side fails. I learned how to interpret the data on
the load test results and tweak my bridge design accordingly. I also learned
what parts of the bridge go under to most tension and how the weight gets
distributed.
- Kyle Hayes
- Kyle Hayes
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