P=20 x=10 y=2

Figure I shows a bridge truss with different loading acting on point L, K, J, I and H. The bridge has a height of x metre and a span of by metre length at y metre evenly distributed in each trusses. 3PKN 2PkN 2PkN PkN PkN K L H xm B C D E F 6ym, 6@ym Figure 1: Bridge truss Note: P = the last 2 digits of your student's ID, if the value is 0, take value as 10. * = the last digit of your student's ID, if the value is 0, take the value as 10. y = the second last digit of your student's ID, if the value is 0, take the value as 10. Identify all the zero force members in the bridge truss. 13 Marks! (b) By using the method of sections, determine the force in members ED, EJ and 1 of the truss, and state if the members are in tension or compression. [12 Marks (c) If member EJ has been broken, evaluate the load distribution after this failure. Justify the function of zero force members after the failure. [10 Marks -END OF QUESTION PAPER-