Question: 2 . ( 2 0 pts ) Knowing that the allowable normal stress for the steel used is 1 6 5 MPa, select the most

2.(20pts) Knowing that the allowable normal stress for the steel used is 165 MPa, select the most economical S-shape beam to support the loading shown in Fig. 2.
2 . ( 2 0 pts ) Knowing that the allowable normal

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