Design on the use of a cantilever prismatic timber beam

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Reference no: EM131150287

A preliminary design on the use of a cantilever prismatic timber beam indicated that a beam with a rectangular cross section 2 in. wide and 10 in. deep would be required to safely support the load shown in part a of the figure. It was then decided to replace that beam with a built-up beam obtained by gluing together, as shown in part b of the figure, five pieces of the same timber as the original beam and of 2 X 2-in. cross section. Determine the respective lengths l1 and l2 of the two inner and outer pieces of timber that will yield the same factor of safety as the original design.

Reference no: EM131150287

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