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.. Most common balsa wood truss bridge designs that are used in competitions are of course warren, pratt, and howe. advanced bridges are usually focused on designs based on arched, cantilever and bowstring bridges.. 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 bridge of your own design. things you'll need.
Insufficient information to offer an answer. what is the bridge used for, what is the span, how much weight does it need to support (assuming a scale rr), how high off the ground, overhead space available, anchor points etc.. What is the most efficient bridge design (lightest bridge holding the most weight) for a center-loaded balsa and basswood bridge? must: be a single structure supported only at its two ends, not go below surface, be at least 5 cm wide at any point.. Balsa wood bridge: this instruction set will teach you how to design and construct your own bridge made out of balsa wood. this is a fun, intriguing project that will entertain an individual for hours. many high school and college science and engineering classes wi....
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