6.C2 The floor of a bridge will rest on stringers that will be simply sup-ported by transverse floor beams, as in Fig. 6.3. The ends of the beams will be connected to the upper joints of two trusses, one of which is shown in Fig. P6.C2. As part of the design of the bridge, it is desired to simulate the effect on this truss of driving a 12.kN truck over the bridge. Knowing that the distance between the truck's axles is b = 2.25 in and assuming that the weight of the truck is equally distributed over its four wheels, write a computer program that can be used to calculate the forces created by the truck in members BB and CH for values of x from 0 to 17.25 m using 0.75.m increments. From the results obtained, determine (a) the maximum tensile force in BIC (14 the maximum compressive force in RH, (c) the maximum tensile force in CM. Indicate in each case the corresponding value of x. (Note: The increments have been selected so that the desired values are among those that will be tabulated.)
6.C2 The floor of a bridge will rest on stringers that will be simply sup-ported by transverse floor beams, as in Fig. 6.3. The ends of the beams will be connected to the upper joints of two trusses, one of which is shown in Fig. P6.C2. As part of the design of the bridge, it is desired to simulate the effect on this truss of driving a 12.kN truck over the bridge. Knowing that the distance between the truck's axles is b = 2.25 in and assuming that the weight of the truck is equally distributed over its four wheels, write a computer program that can be used to calculate the forces created by the truck in members BB and CH for values of x from 0 to 17.25 m using 0.75.m increments. From the results obtained, determine (a) the maximum tensile force in BIC (14 the maximum compressive force in RH, (c) the maximum tensile force in CM. Indicate in each case the corresponding value of x. (Note: The increments have been selected so that the desired values are among those that will be tabulated.)
