DIFFERENTIAL LEVELING. Complete the differential level notes shown below and perform the customary arithmetic. STA BS HI FS ELEVATION ВМ10 2.085 137.450 m ТР1 2.015 0.982 ТР2 1.864 1.428 ТРЗ 0.579 1.527 BM11 0.423 2.423 TP4 1.446 1.807 ТР5 1.778 1.725 ТР6 2.051 2.339 TP7 2.920 1.005 ВМ12 3.186 2.358 ТР8 2.805 0.995 ТР9 0.774 1.206 ВМ13 0.603

Figure Q3 shows an overhead crane truss supported by pin and roller supports at point A and E. The truss is subjected to forces of 20 kN, 30kN and 20 KN acted at joint G, H and I, respectively. The cross-section area for the truss member is 2000 mm? and the Young's Modulus for all truss members is 250 kN/mm?. As a structural engineer, you are responsible to ensure the overhead crane truss is safe during maintenance works. Therefore, the crane is additionally supported by roller support at joint C. Calculate reaction, R. at support C (assume the unit load acting downward)? (a) (b) How do you present the new data on internal force for member BC when overhead crane has additional roller support at Joint C?

I am not sure that I am doing this right up to the point that I scanned...is it supposed to be W_B=-5pi rad/sec or...? Thank you for the help!

4. Solve the following system of equations. 8 ft 2 ft 64 BD- 12 12 0 = ЕС 4 ft 7 32 BD+° EC– 1080 12 18 0 = A 3 ft 7 E В 6 ft 2 ft 5 ft