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A simply supported composite beam 12 ft. long is loaded by a force of 6 k...

Question

A simply supported composite beam 12 ft. long is loaded by a force of 6 k...

A simply supported composite beam 12 ft. long is loaded by a force of 6 k as shown. The cross-section of the composite beam consists of a wood block reinforced on its top and bottom by steel channels. The wood block has a modulus of elasticity of 2000 ksi while the steel channel has a modulus of elasticity of 30000 ksi. The steel channel has the following dimensions.

 Section Area (in2) Izz (in4) Centroid (in.) d (in.) tw (in) bf (in.) tf (in) C7X14.7 4.33 1.37 0.532 7 0.419 2.30 0.366

Determine:

a) the maximum stress in the wood block.

b) the maximum stress in the steel channel.

The maximum stress in the wood block is ______ (ksi)

The maximum stress in the steel channel is ______ (ksi)

can someone help me with this civil engineering problem?

z-axis bi steel channel E(steel)= 30000 ksi tw 21. d 6 channel dimensions wood block E(wood) = 2000 ksi 6k E(steel) = 30000 ksi steel channel 4 ft. 8 ft. d beam loading beam cross-section

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