Chapter 13.7, Problem 108P

Determine the magnitude of the force (lb) in member CD of the truss shown if P = 34150 b, Q = 33650 b, and y = 7.2 ft. Round off only on the final answer expressed in 3 decimal places, Instead of units, indicate whether the force is tensile or compressive: use Tif tensile and C if compressive.

The foundation wall shown below is considered to be a cantilever (fixed at the footing). If it is acted on by lateral load of 300 pounds per foot from the soil, determine the reactions at the fixed base. 300 pounds per foot kip 8 ft

Link AB must be made of a steel whose ultimate tensile strength is 450MPa. Determine the cross-sectional area of ​​AB for which the safety factor of 3.50. Assume that the link will be adequately reinforced around the pins at A and B.

The distributed load is supported by two pin-connected columns, each having a solid circular cross- section. If AB is made up of aluminum and CD of steel, determine the required diameter of each column so that both will buckle at the same time. (Esteel = 200 GPa, Sy,steel = 250 MPa, Eal = 70 GPa and Sy,al = 100 MPa). 18 kN/m 3 m 0.75 m 0.75 m

Using the method of joints, determine the magnitude of force (lb) in member CD of the truss shown if P = 9358 lb, x = 13.6 ft, and y = 7.8 ft. Round off only on the final answer expressed in 3 decimal places. Instead of units, indicate whether the force is tensile or compressive: Use T if tensile and C if compressive.

Using the method of joints, determine the magnitude of force (lb) in member AD of the truss shown if P = 10806 lb, x = 10.9 ft, and y = 7.3 ft. Round off only on the final answer expressed in 3 decimal places. Instead of units, indicate whether force is tensile or compressive: Use T if tensile and C if compressive.

If load P = 22.1 kips, determine the normal force in bar (1).

The deck is supported by the two 40-mm-square columns. Column AB is pinned at A and fixed at B, whereas CD is pinned at C and D. If the deck is prevented from sidesway, determine the position d of the center of gravity of the load and the load’s greatest magnitude without causing the deck to collapse. Both columns are made from Douglas Fir.

Problem 1 Detemine the reaction at A and C. Support at A is fixed, C is roller support, and B is pin- connected. 7.6 kN 10 KN/m 1.5m B. 2m 4m Problem 2 Detemine the reaction at A and B. Support at A and B are pinned and C is pin-connected. 12.65 kN 15 kN 2m 2m 3m B 4.5m 3.5m 10.3 kN/m