50mm 50mm 下 125rm -20mmo bolts 125mm 60mm 50mm 下 PL I6mm X 350mm Problem 2.5 Problem 2.6 (20%)2.6. The tension member shown is an angle L150 x 90 x 10. The bolts are 20 mm o. If A36 steel, with F,= 250 MPa and F,= 400 MPa, is used, is the member adequate for a service DL= 150 KN and a service LL= 150 KN? Use ASD.
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The tension member shown is an angle L150 x 90 x 10.
The bolts are 20 mm . If A36 steel, with F= 250 MPa and F= 400 MPa, is used, is the member y adequate for a service DL= 150KN and a service LL= 150 KN? Use ASD.
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- Determine the tensile capacity of a 200 x 100 x 12 mm angle in S275 steel assuming that the angle is connected through the longer leg by one row of M24 bolts (Fig. 3). (3 bolts in a row and p = 70 mm)A single-angle tension member 175 mm x 100 mm x 18 mm haw two gage lines in its long leg and one in the short leg for 16 mm bolts arranged as shown. Area of the angular section is 4961 mm^2. Use A36 steel Fy = 248 MPa and Fu = 400 MPa. Standard nominal hole diameter for 16 mm bolt = 17 mm. Determine the net area of the angular section. Determine the allowable tension strength of the angular section based on the gross area. Determine the allowable tensile strength of the angular section based on the effective net area. Reduction factor U = 0.75Select a 30-ft long W12 section of A992 steel to support a tensile servicedead load of 130 kips and a tensile service live load of 110 kips. Asshown in the figure, the member is to have a two lines of bolts in eachflange for 7/8-in bolts (at least three in a line 4 in. on center).Use Fy = 50 ksi and Fu = 65 ksi.
- A double-angle shape, 2L7 3 4 3 3⁄8, is used as a tension member. The twoangles are connected to a gusset plate with 7⁄8-inch-diameter bolts throughthe 7-inch legs, as shown in Figure P3.4-5. A572 Grade 50 steel is used.a. Compute the design strength.b. Compute the allowable strength.A plate with width of 420 mm and thickness of 13 mm is to be connected to a plate of the same width and thickness by 30 mm diameter bolts, as shown in the Figure 1. The holes are 3mm larger than the bolt diameter. The plate is A36 steel with yield strength Fy = 248MPa. Assume allowable tensile stress on net area is 0.60Fy. It is required to determine the value of b such that the net width along bolts 1-2-3-4 is equl to the net width along bolts 1-2-4. W = 420 mm t = 13 mm a = 64 mm c = 104 mm d = 195 mm Bolt Diameter = 30 mm Holes Diameter = 30 mm + 3 = 33 mm ?? = 248 MPa Allowable Tensile Stress on ?? = 0.60Fy a. Calculate the vaue of b in millimeters. b. Calculate the value of the net area for tension in plates in square millimeters. c. Calculate the value of P so that the allowable tensile stress on net area will not be exceeded.A single-angle tension member, an L3 1⁄2 × 3 1⁄2 × 3⁄8, is connected to a gusset plate with 7⁄8-inch-diameter bolts as shown in the figure. A36 steel is used. Fy = 50 ksi, Fu = 58 ksi, E = 29000 ksi. Ag = 2.50 in^2. Assume that the effective net area is 85% of the computed net area.
- The bolts in the lap joint shown are 22mm in diameter and 25mm diameter holes. The plates are A36 steel with Fy = 250MPa and Fu = 400Mpa. For this problem, x1 = 500mm, x2 = 160mm, x3 = 60mm and t = 12mm. The allowable stresses are: Bearing Stress on projected area of the plates Fp = 1.5Fu Tension on net area of plates, Ft = 0.5Fu Shear on plates, Fy= 0.3Fu Shear strength of bolt, Fv= 210 Mpa a.) Determine the value of P based on bolt shear b.) Determine the value of load P based on bearing on projected area on plate (area in contact with the plate and bolts) c.) Determine the value of P based on block shear (use net area for block shear and use the diameter of hole)Subject : Steel design 1. A tension number is an angular section 150mm x 110mm x 12.5 mm having a cross sectional area of 3064mm^2. The section is connected with three 18mm diameter bolt spaced at 100mm on centers as shown on the figure.Minimum tensile strength Fu=400Mpa and Fy=248.8Mpa. Diameter of Hole is 21mm. a. Compute the block shearing strength of the member.Bottom chord of truss is composed of two angle bars each having a dimension of 151 mm x 198 mm x 7 mm. Between them is a gusset plate, 9.5mm thick. At each end of joints, four 19mm-dia. bolts are fastened along the gage line, having an edge distance of 38 mm and 55.8mm pitch. Use A36 steel Fy = 248 MPa Fu = 400 MPa spacing of bolt = 67.3 mm Compute the capacity of the bottom chord based on block shear strength, in KN.