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STANDARD VIEW PRINTER VERSION BACK P8.037 GO Multipart The beam shown in Figure P8.37 will be constructed from a standard steel w shape using an allowable bending stress of 22 ksi. Assume Po=8.0 kips, Pc-13.5 kips, Po 4.0 kips and a-5 ft (a) Develop a list of five acceptable shapes that could be used for this beam. On this list, include the most economical W10, w12, w14, W16, and W18 shapes (b) Select the most economical W shape for this beam. 尼 Calculate A, and Ey, the vertical reaction forces at supports A and E, respectively. Answers: ps ips Click if you would like to Show Work for this question: Open Show Work Attempts: Unlimited SAVE FOR LATER SUBMIT ANSWERR ptemine the maximum bending moment magnitude for the beam. One method to obtain this value is to construct shear-force and bending-moment Part 2 diagrams on a piece of paper. Determine the maximum bending moment magnitude from your bending-moment diagram. Answer: Mmax the tolerance is +/-2% Click if you would like to Show Work for this question: Open Show Work ip-ft
Part 3 Calculate the minimum required section modulus if the allowable bending stress is 22 ksi. Jn. Answer: Smn the tolerance is +/-2% Click if you would like to Show Work for this question: Open Show Work Attempts: Unlimited SAVE FOR LATER SUBMIT ANSWER Part 4 Below, fill in the missing portions of the beam shape designations for the most economical W10, W12, W14, Wi6, and W18 shapes that are acceptable for this case. Also, enter the corresponding section modulus for each case. Answers: The most economical w 10 shape is: W10 x「一 1 with S- The most economical W12 shape is: W12 x厂 with S- The most economical W14 shape is: W14 x The most economical W16 shape is: W16x The most economical W18 shape is: W18 x Click if you would like to Show Work for this question: Open Show Work n. with S with S in. with S- n. Attempts: Unlimited SAVE FOR LATER SUBHIT ANSWER Part 5 chaore the most economical W shape for this beam. Select only from the W10, W12, W14, W16, and W18 shapes that were considered in Part 4. If you have more than one choice with the same weight, choose the shorter shape. Answer: The most economical shape has a weight of exact number, no tolerance Click if you would like to Show Work for this question: Open Show Work lb/ft
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