How To Build A Truss Bridge From Balsa Wood
The warren truss uses equilateral triangles. the pratt and howe truss also uses triangles, but the triangles are slanted to change the distribution of weight. the k truss uses the same shape as the letter �k� to distribute weight. a model truss bridge can be made from balsa wood using any of these designs, or you can construct a truss. For this balsa wood bridge, i used a �k-truss� design with seven vertical members and 6 �k-trusses� per side. the k�s were the most challenging part of the build, because i had to calculate each ones length, and the approximate measure of the angle i had to cut into each one.. This short movie shows how to start and build the balsa truss for the challenge project..
A truss is probably the best choice for a balsa bridge. the only alternative that i can think of is to make something that resembles a cable-stayed suspension bridge, using balsa for the "cables.". 3 ways to build a balsa wood bridge - wikihow, how to build a balsa wood bridge. building balsa wood bridges is a popular hobby and class project. there are even professional competitions for balsa wood bridges.. This bridge was constructed for a competitive physics final. the bridge had to span four feet and allow for three mass hangers to hang from the bottom..
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