Free PE Civil: Structural Flashcards

-350.7 kip-ft Explanation: To maximize negative moment at the first interior support, the live load must be placed on the two adjacent spans (Span 1 and Span 2). Using structural analysis coefficients or three-moment equations for this loading configuration: MD = -0.100 w_D L²ₐvg (or exact analysis: M_D = -103.2 kip-ft). ML = -226.9 kip-ft. Factored Moment M_u = 1.2(-103.2) + 1.6(-226.9) = -350.7 kip-ft.