9-17. Select the lightest satisfactory W shape section if F, = 50 ksi. Lateral bracing is provided at the ends only. Determine C. (Ans. W24 x 117 LRFD and ASD) PL = 40 k PL = 40 k %3D %3D D = 1 k/ft () obivona 10 ft- 10 ft- 10 ft→ FIGURE P9-17 9-18. Repeat Prob. 9-17 if lateral bracing is provided at the concentrated loads as well as

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Steel Framing

A steel frame consists of a skeleton frame structure comprising of horizontal I-beams and vertical steel columns fitted in a rectangular grid building construction to brace the floors, walls, and the roof of the building held onto the frame. Due to the implementation of this methodology, the construction of the skyscrapers was feasible.