Question

do not forget to answer the true and false please.

Required Information NOTE: This is a multi-part question Once an answer is submitted, you will be unable to return to this part. You are driving along a road and pass over a bridge over a river. As you come upon the bridge, you notice that there are no support columns below the bridge for the entire span. The only place the bridge is supported is on either of its ends at the banks of the river. You also notice that on top of this bridge is a metal structure through which you drive as you cross the bridge. You look out your driver window and see the structure shown below. You begin to think about this structure composed of many different members connected together and how it must have something to do with there being no support columns for the bridge. Answer the following questions about this particular structure. |--25-12-2.5 m = -2,5 m -2.5 If it is known that the structure on the bridge is a truss, what assumptions can be made about it? Check all that apply. Check All That Apply

Answer 1

Consider the mess shown below! wo F 2.5m 6 2.5m x 2.5m + 2.5m, 2.5m, non ll from the condition of plan stress o n = no al member, y no al soin. from the given stress, n- =13, 13 = @ had from the na 2 j-3 13 = 2X0-3 12 = 16-3 13 = 13

So, the given Structure is Stress designed to carry act in its plane only treated as two dimensional plane lead that and can be structure So, the given statement is TROET The assumption is that given plane stress carry all straight member and assembled in such a way that all the member of this their of each of or members frons verse and loads mess are pinned together ends ds alo along the members carry oxial or of their voints are comect option. frons verse loads Joints Only so (i), (u) are comech Opton,