At a certain section a beam has the cross-section shown in Fig.2. The 3 m long beam is simply supported at its ends and carries a concentrated load of 100 kN at 1 m from the left-hand support. Draw the shear stress distribution diagram for a section 2 m from the left-hand support. 20x20x10 10 (20x20x1 to 20- -20-20-20- Fig 2 Cross Section of the Beam 16.259 All dimensions are in mm

(b) The beam is subjected to the loading shown in Fig. Q2(b), where P = 7 kN. Determine the average shear stress developed in the nails within region AB of the beam. The nails are located on each side of the beam and are spaced 100 mm apart. Each nail has a diameter of 5 mm. Hint: q VQ 9 T VQ It A 2 m 100 mm 30 mm 13 kN B -2 m 30 mm Fig. Q2(b) P 30 mm 250 mm 30 mm 150 mm

How would you draw the deformation sketch?

Given the beam shown in Fig. E2, answer the questions below. | 275 kN | 275 kN A 1.5m 1.8m 1.8m Fig. E2 (i) Knowing that o all = 160 MPa and Tall = 100 MPa select the most economical metric wide-flange shape that should be used to support the loading shown. (ii) Determine the value expected for the normal stress at the junction of the flange and the web of the selected beam. (iii) Determine the value expected for the shear stress at the junction of a flange and the web of the selected beam. (iv) Draw the stress element, and indicate the normal and shear stresses, for a point located at the junction of a flange and the web of the selected beam. (v) Draw the Mohr's Circle for the stress element determined in (iv). (vi) For the stress element in (iv), calculate the major principal stress o1 and the minor principal stress o3