A tensile test was performed on a specimen with a circular c…

A tensile test was performed on a specimen with a circular cross section. The diameter was measured to be 0.910 inch. Two marks were made along the length of the specimen and were measured to be 2.650 inches apart. This distance is defined as the gage length, and all length measurements were made between the two marks. The specimen was loaded to failure. Fracture occurred at a load of 24,500 pounds. The specimen was then reassembled, and the diameter and gage length were measured to be 0.497 inch and 2.867 inches. Determine the reduction in cross-sectional area as a percentage.

A 3/8 in. x 5 in. plate must resist a service dead load of 3…

A 3/8 in. x 5 in. plate must resist a service dead load of 31 kips and a service live load of 50 kips in tension. The plate is connected to a gusset with four 7/8 in. bolts. Standard sizing is used for the bolt holes. The steel is ASTM A572 Grade 42: Fy = 42 ksi, Fu = 60 ksi. Assume that Ae = An. Using LRFD, does the plate have enough strength?

A column in a building is subjected to the following load ef…

A column in a building is subjected to the following load effects. If ASD is used, what is the required nominal strength of the column for a safety factor Ω of 1.85?12 kips compression from dead load6 kips compression from roof live load8 kips compression from snow6 kips compression from rain accumulated on the roof13 kips compression from wind