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In: Civil Engineering

An elevated floor has dimensions of 40 feet by 20 feet. Wooden joists (southern pine) span...

An elevated floor has dimensions of 40 feet by 20 feet. Wooden joists (southern pine) span the 20-foot length and are spaced at 5 feet on center. A steel (E=29,000 ksi and allowable stress of 50 ksi) wide-flange girder spans the 40-foot length. The floor (DL) is 6” thick concrete with a 100 psf live load. Design both the timber joist and steel girder using a max l/360 for the deflection limit. Disregard safety factors and self weight of the beams. Pay close attention to units. You may use software to assist but all work must be shown. Beams are loaded in the strong direction.

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Expert Solution

Since there are some formulas, I preferred a handwritten note. Results are tabulated in the answer for your easier understanding. Hope that it is clear for you and it really helped you.

In case of any doubt, please feel free to ask in the comment section. Thank you.

Ally Wells answered 1 year ago
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