|Mar8-05, 07:33 PM||#1|
Good bridge design?
For our balsa wood bridge, 1/8 in square, would a bridge that crosses catilever and arch styles together work well? The steel blocks attached to the test table are acting like abutments, so all of our forces can be directed to them, right?
|Mar9-05, 07:58 AM||#2|
|Mar10-05, 10:44 AM||#3|
Here's a tip on building your bridge... I did this back in highschool...
1. The joints are going to be the weak link.
2. Overlapping joints will be stronger than butt joints.
3. maximize the number of overlapping joints.
4. Since there are no restrictions on how you cut your balsa strips, consider that 1/8 x 1/8 balsa is equal to (4) 1/8 x 1/32 strips.
5. You can overlap the 1/8 x 1/32 strips like interlocking fingers to maximize the number of overlapped joints at a given intersection.
PS - The best bridges seemed to be traditional trusses rather than arches.
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