4-46. If the gap between C and the rigid wall at D is initially 0.15 mm, determine the support reactions at A and D when the force P 200 kN is applied. The assembly is made of A-36 steel.

4. Select member FC and CB in the truss to carry the inclined force P. Set the allowable tensile stress at 150 MPa. F A C B 6 equal spaces at 6m = 36m 800 kN 3 E 9 m 9 m

The rigid element BCD is supported by a bar AB with a diameter of 25 mm and a connection at C with a diameter of 10 mm. Determine:a. The normal stress in bar AB. b. The shear stress of the bolt at C.

2. All members of the truss A B C shown have a cross- sectional area of 500 mm? and all pins have a diameter of 20mm. Determine: 2 m (a) The axial stresses in members BC and DE F E D -2 m 2 m 2 m- (b) The shear stresses in the pin at A, assuming the pin is in double shear P = 21 kN

Eng

4-46. If the gap between C and the rigid wall at D is initially 0.15 mm, determine the support reactions at A and D when the force P = 200 kN is applied. The assembly is made of A-36 steel. A -600 mm P 50 mm B 600 mm 25 mm Prob. 4-46 C -0.15 mm

*For the Howe bridge truss shown, d=11 ft,F1=3150 lb, F2=2150 lb, F3=2550 lb, and F4=4150 lb.* Pt A. Determine the forces in members CD, DH, and GH. Pt B. Determine the forces in members HI, BH, and BC.

10. The rigid bar below is supported by axial bar (1) and by a pin connection at C. Axial bar (1) has a cross-sectional area of A₁ = 275 mm², an elastic modulus of E = 200 GPa, and a coefficient of thermal expansion of a = 11.9x 106/°C. The pin at C has a diameter of 30 mm. After load P has been applied and the temperature of the entire assembly has been increased by 31°C, the total strain in bar (1) is measured as 975 μe (elongation). Determine: (a) the magnitude of load P. (b) the shear stress in pin C. 275 mm Connection detail (1) Rigid bar 540 mm 135 mm 260 mm

Determine the force in member BE if the force on E is changed to 525kN. 24 kN 17 kN BY 0.8 m # E 8 kN D 7 kN Answer: 1.5 m -1.5 m- S OKN Tension ON Compression

- Determine the force in member GH and state if the member is in tension or compression. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. FGH = Submit Part B. FBC= μA Value Part C Request Answer Determine the force in member BC and state if the member is in tension or compression. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. HA Value Submit Request Answer 3 μA Units FBG = Value → Units ? Determine the force in member BG and state if the member is in tension or compression. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. Units ? ?