Problem One. Steel Beam: Design lightest and most economical girder that carries two equal concentrated loads...

Problem One. Steel Beam: Design lightest and most economical girder that carries two equal concentrated loads that are equally spaced on a beam that is 18”0” long with pinned ends. The individual load is 8,000 pounds. The material is hot rolled structural steel per ASTM A-36. Design factor of safety is 1.5 and the maximum deflection over the total span is the span in inches divided by 360. Use may use either wide flange or I beam for your beam. Develop the load, shear, moment, and deflection diagrams with labels. The cost per pound for hot rolled structural steel is $1.15 per pound. Create a table of results and designate the best design.

Problem Two. Wood Beam: Using Southern Pine (S4S) simple supported joists, what is the Live Load (LL) and the Dead Load (DL) (which is 14% of the total load) that a two 2x12 can safely carry if the joist spacing is 16 inches and the span is 14”0”. Show your work and justify your answers.

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Ally Wells answered 7 months ago

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