A3-2. The truss is used to support the loading shown Determine the required cross-sectional area of member BC if the allowable normal stress is o allow 165 MPa.

If the allowable bearing stress for the material under the supports at A and B is ob = 720 psi, determine the maximum load Pmax that can be applied to the beam. The bearing plates each have square cross sections of 3 in. by 3 in. The reactions at the supports are vertical. Assume w = 750 lb/ft, a = 12 ft, and b = 6 ft. Answer: Pmax i b lb P

4. Given the beam loaded as below, label the stress blocks for points A and B. A B A B

For the loading arrangement shown, the crate has a weight of 600 lb. The design requirements states that the maximum normal stress (tensile) developed on the cross section a-a should be limited to 13.9 ksi. Determine the maximum value the offset distance "x" to meet this requirement. Develop an appropriate free body diagram and determine the location of the neutral axis for section a-a. X 1 in. Section a - a

A simple pin-connected truss is loaded and supported as shown. All members of the truss are aluminum pipes that have an outside diameter of 80mm and a wall thickness of 6mm. Determine the normal stress in each truss member.

1.25 ft 3. Determine the maximum allowable weight of passengers on the gondola ride which is suspended from roller E. The down arm EA is made from 1.5" square solid steel with an allowable normal stress of 18 ksi. The center of roller E to the center of section DC is 1.25'. 4 ft 1.5 in.- B 1.5 in.- 5.5 ft A

Determine the maximum and minimum normal stress in the bracket at section a-a when the load is applied at position of x 300 mm. 15 mm 15 mm 200 mm 150 mm 100 KN a

The axial force in the column supporting the timber beam shown is P = 20 kips. Determine the smallest allowable length L of the bearing plate if the bearing stress in the timber is not to exceed 400 psi.

Member (1) has an area of 2,200.00 mm² and an allowable normal stress of 180.00 MPa. Member (2) has an area of 3,000.00 mm2 and an allowable normal stress of 140.00 MPa. Determine the maximum load P that may be supported by (2) 45° 25° the structure without exceeding either allowable stress. Also, report the force in members (1) and (2) at the maximum load P.

A pin-connected truss is loaded and supported as shown. Determine a. The normal stress in member DE if it has a cross-sectional area of 750 mm?. b. The minimal cross-sectional area for member BC if the normal stress is limited to 30 MPa B 3 m E F D - 3 m- - 3 m - 3 m 10 kN 15 kN