Q2) Design top chord (critical member) under the following loading: Use Fy=50 ksi, use T-shape. Assume trusses are spaced at 25’ under following loadings: Purline:

Q2) Design top chord (critical member) under the following loading: Use Fy=50 ksi, use T-shape. Assume trusses are spaced at 25’ under following loadings: Purline: W10×60, located at joints and midway between joints Snow: 20 psf Service load: 8 spf Design Load combination: 0.5(snow load)+1.2( Service load) Ans.) WT6 x 17.5 , show how you reach to this section writing formulas, equation, table,… Factored load should be used according to ASCE-07, look at example in lecture to see how moment calculated for this type of questions. The span of 25 ft should be used in your calculations, section method is the best way to find the axial load in truss. Transcribed Image Text: 5′
8 @ 6′-0″ = 48′-0″-

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