2. Determine the largest load P that can be applied to the frame without causing either the average normal stress or the average shear stress at section a-a to exceed o = 150 MPa and t = 60 MPa, respectively. Member CB has a square cross section of 25 mm on each side. 2m A B 1.5 m a a C P

A bolted connection shown is made up of 2L150 x 100 x 9.5 mm. The angle is made of A-36 steel and the bolts have diameter of 22 mm. Properties of 2L150 x 100 x 9.5 mm: A = 4660 mm2 t = 9.5 mm Fy = 248 MPa Fu = 400 MPa Properties of 20 mm A-325 bolts: Fu = 400 MPa 50 50 50 50 50 50,50 힝힝이어 Gusset Plate 9.5mm 100mm Gusset Plate 100mm 31.25 62.5 T 56.25 a. Nominal dimension of hole diameter, dn = 25 mm b. Determine the ultimate shear capacity (kN) of the connection. c. Determine the ultimate tearing capacity (kN) of the connection if the shear lag factor, U = 0.75.

From the given axis determine the location of the centroid of the composite section shown in the figure. 50 30- 40 15 Dimensions in mm Match each item to a choice: Xbar Ybar Choices: : 63.2mm : 25mm :: 66 98mm :: 76 3mm

10. What is the net section area of steel plate 40cm wide and 10mm thick with one bolt if diameter of bolt hole is 18mm? a) 38.2 cm² b) 24 cm² c) 578 mm² d) 465 mm2