The members of the truss shown below are made of steel (E = 200 GPa) with cross-sectional area of 525 mm². The truss has dimensions a 1.7 m and b= 1.3 m. For the loading shown below with P = 100 kN and Q = 200 KN, determine the change in length of all six members (AB, BC, AD, BD, CD, and DE). B D mm P Q Report your answers in units of mm with 1 decimal place of accuracy. Increase in length is positive, decrease is negative. Change in length of member AB, AB = Change in length of member BC, BC = Change in length of member AD, SAD = Change in length of member BD, BD = Change in length of member CD, &cd= Change in length of member DE, SDE =| mm mm mm mm E mm b

In the truss system shown in the figure below, there are totally nine bars. Pick any six of them and calculate the forces they are bearing. Put your answers in the table below. Show your analysis. E Force Compression/ Bar magnitude Tension 4 m 45° АВ AC A 7 m AD 90 BD 3 m 90° CD CF B F CE 4 m 4 m DF 30 N FE

Rigid bar ABC is supported by two aluminum alloy (E = 10,000 ksi) rods as shown below. The horizontal distance between rods (1) and (2) is a = 120 in. Rod (1) has a length of L1 = 87 in. and a cross-sectional area of A1 = 0.65 in.2.  Rod (2) has a length of L2 = 84 in. and a cross-sectional area of A2 = 1.15 in.2. Rigid bar ABC is to remain horizontal under a load of P = 25 kips. Determine the distance x (in inches rounded to the nearest tenths) from joint A to the location of load P so that bar ABC remains horizontal.

From the figure shown, a truss is subjected to loads PI = 15 kN, P2 = 15 kN and P3 = 25 kN at joint C, D and E respectively. Use SI = 3 m; S2 = 4 m P₁ Properties of diagonal members (2L75 x 75 x 6): Ag = 1858 mm2 Fy = 248 MPa rx = 22.9 mm ry = 33.2 mm G a) What is the axial force in kN, in member DI? b) What is the allowable stress in MPa, in member DI? c) Calculate the allowable load in kN, in member DI. H 6 @ Si I P₁ E B S, CIVIL ENGINEERING- STEEL DESIGN ...