7. (14 points) The simple beam AD is to be designed for the loading shown with an allowable normal stress all = 200 MPa.

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7 14 Points The Simple Beam Ad Is To Be Designed For The Loading Shown With An Allowable Normal Stress All 200 Mpa 1 (85.07 KiB) Viewed 21 times

7. (14 points) The simple beam AD is to be designed for the loading shown with an allowable normal stress all = 200 MPa. (a) Use the graphical method to draw the shear and moment diagrams for the beam. Clearly label the numerical values of all transition points on the diagrams. (b) For a rectangular cross section (base b and height h) that has an aspect ratio of 3, determine the minimum permissible size for base b. (c) Select the most economical wide flange W section. b= __; W-shape: 120 KN 36 kN/m B C D 1 m A V M X 2 m -3 m