. Select the lightest L4 x 4 section that will safely support the service tensile loads Pp = 45 k and PL = 25 k. The member is to be 15 ft long and is assumed to have one line of holes for 3/4-in Ø bolts in one leg. Assume that there are at least three holes in each line 4 in on center. Use A36 steel.

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A double-angle shape, 2L8×8×%, is connected to a %-inch gusset plate as shown in Figure 3. Determine the maximum total service load that can be applied if the ratio of dead load to live load is 0.5. The bolts are 1-inch-diameter, Group B bearing type bolts. A572 Grade 50 steel is used for the angle, and A36 steel is used for the gusset plate. Threads are not excluded from the shear plane. Assume that block shear failure is not going to happen. T 2" 3" 3" 3" 00 -OO 00 -oo - t = 5/8" Figure 3

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SITUATION I A lapped bolted lension member is shown. Diameter of bolts are 22 mm and the plate material is A36 steel Fy = 275 MPа, Fи 3 415 МPа. Assume the fasteners are adequate and do not control the tensile capacity. Diameter of hole is 2.5 mm bigger than the diameter of bolt. 12 :: 350 50 100 100 50 50 1. Determine the tensile capacity of the lapped joint based on gross area. a. 252.656 kN c. 866.250 kN b. 202.125 kN d. 693.000 kN 2. Determine the net Area for the tensile capacity of the lapped joint. а. 3318 тm? c. 5250 mm? b. 1554 mm? d. 1824 mm? 3. Determine the tensile capacity of the lapped joint based on the net area. a. 752.856 kN C. 866.250 kN b. 688.845 kN d. 1039.500 kN

PLEASE DOUBLE CHECK YOUR ANSWER Determine the maximum factored load that can be applied to the Tension member shown. The angle is ASTM A36. The diameter of the bolts is 1-in. CIVIL ENGINEERING STEEL DESIGN W12 x 16 4,-0.220 in -3.99 in 1=+=+=+= 3 in 3 in 3 in