12 mm 1.15 Link AC is made of a steel with a 450-MPa ultimate normal stress and has a 6 X 12-mm uniform rectangular cross section. It is connected to a support at A and to member BCD at C by 10-mm-diameter pins, while member BCD is connected to its support at B by a 8-mm-diameter pin; all of the pins are made of a steel with a 170-MPa ultimate shearing stress and are in single shear. Knowing that a factor of safety of 3.25 is desired, determine the larges load P that may be applied at D. Note that link AC is not reinforced around the pin holes. 200 mm 150 mm 100 mm Fig. P1.15

Compute the nominal shear strength of an M107.5 of A572 Grad 65 steel.

Compute the nominal shear strength of an M1211.8 of A572 Grade 65 steel.

A beam is part of the framing system for the floor of an office building. The floor is subjected to both dead loads and live loads. The maximum moment caused by the service dead load is 45 ft-kips, and the maximum moment for the service live load is 63 ft-kips (these moments occur at the same location on the beam and can therefore be combined). a. If load and resistance factor design is used, determine the maximum factored bending moment (required moment strength). What is the controlling AISC load combination? b. What is the required nominal moment strength for a resistance factor of 0.90? c. If allowable strength design is used, determine the required moment strength. What is the controlling AISC lead combination? d. What is the required nominal moment strength for a safety factor of 1.67?