|Feb7-10, 03:28 PM||#1|
balsa wood through or under???
i have to design and build a balsa wood bridge for a class at university,
i've been reading up and it seems for this type of material its best to use a truss bridge as its only good in tension or compression
the load will be at the bottom i think
wondering whether a through truss would be better than an under truss and why? cant find any info on why an under truss isnt used much apart from clearance/space issues.
also which is better for a load directly applied in the centre, the pratt or the howe? im not certain
any advice would be greatly appreciated
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