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Why Engineers use H and I beams instead of solid square bars and rods when building structures that may be subjected to stresses.Why?
Wiki User
∙ 6y ago
It's all down to cost ! It's cheaper to build the framework from H or I beams - as they use less resources than solid ones. The way they're put together - coupled with the makeup of the beams makes them just as strong as is they were solid ones.
Wiki User
∙ 6y ago
Wiki User
∙ 6y agoYou get the same strength fora fraction of the mass. i out construction the less the mass the higher you can build it. In addition the problem of lifting the mass up to the top of the construction. A heavier lift is harder to do.
The other solution provided by shaped beams is the relative ease of bolting or riveting them together compared with sold beams.
This shape of beam has been adopted by wood frame builders where e floor joists are now three part construction (a wooden I beam)
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