10:11 I 30 75 2 3 ||| 75 30 5002 50 Figure 10 11) A wall bracket is attached to the wall by means of four identical bolts, two at A and two at B, as shown in Figure 11. Assuming that the bracket is held against the wall and prevented from tipping about the point C by all four bolts and using an allowable tensile stress in the bolts as 35 N/mm. Determine the size of the bolts on the basis of DE theory. -500- 100 100 -A 100 B Figure 11 1 4G { | 46 | 45%- 12) A bracket, attached to a vertical column by means of four identical rivets, is subjected to an eccentric force of 25 kN as shown in Figure 12. Determine the diameter of rivets, if the permissible shear stress is 60 N/mm. 100 2 3 4 ... 200 P=15 kN O 5 kN 25 KN 25 KN Figure 12 13) A riveted joint, consisting of two identical rivets, is subjected to an eccentric force of 15 kN as shown in Figure 13. Determine the diameter of rivets, if the permissible shear stress is 60 N/mm. 100 Page 4 of 5