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- 3.5-3 In the connection shown in Figure P3.5-3, the bolts are 4-inch in diameter, and A36 steel is used for all components. Consider both the tension mem- ber and the gusset plate and compute the following: a. the design block shear strength of the comnection b. the allowable block shear strength of the connection http://www.jamarana.com 12" -34 1/2" www.jan 3/2" t = 3/8 2/2" t = 7/16 FIGURE P3.5-3The bolted connection shown is a bearing type connection. Which of the following best gives the shearing capacity, ØRn. of the bolts? Consider threads excluded from shear plane and deformation at bolt hole is a design consideration. Standard size holes. PL350x12mm = 250 MPa C250x22.8 70 114 M20 A490 70 40' 60' 60 '40 SECT. A d tw bf tf Mm 15.8 mm^2 mm mm mm mm C250x22.8 2880 254 6.1 65 11.1 Ix(10^6) Sx(10^3) ly(10^6) Sy(10^3) Zx(10^3) Zy(10^3) rx ry mm^4 mm^3 mm mm^4 mm^3 mm mm^3 mm^3 27.7 218 98.1 0.912 18.5 18.5 257 40.3 O 424.8 KN O 1,102.7 KN O 3,770.7 KN O 1,637.1 KNDetermine the maximum Pu that the connection can resist. Use 25 mm Ø A490-X bolts and 12 mm, A-50 plates. Assume that edge distance and bolt spacing are not critical. Use LRFD. 246 mm 76 mm 12 mm 25 mm 73 mm 74 mm 27 mm 56 mm
- Determine the required bolt diameter for the connection shown. The steel is A36 and the bolts are in standard holes. Check bearing and tearout strength requirement of the bolts. Use a) A490N, b) A490SC with Class A faying surface. Adopt the User Note on AISC Specifications J3.6 to determine the total effective strength of the bolt group. Use LRFD.Problem. A bolted connection shown consists of two plates 300 mm x 12 mm connected by 4 - 22 mm diameter bolts. 12 mm bolts t=12 mm t=12 mm P. P- P 300 75 75 75 Edge distances -75 mm dhole for tensile and rupture d, +3 mm dnole for bearing strength for L- de +1.5 mm Fy 248 MPa F.- 400 MPa2-PL10x1/2 A-36 Bolts are 7/8 in A-325, threads are not excluded. All edge spacings are minimum | 3" | 3" | о PL 10x3/4 A-572Gr50 a) Determine the nominal bolt capacity. b) Determine the nominal bearing capacity for each plate. c) Determine the nominal rupture capacity of each plate. d) What is the nominal capacity of the connection? e) Using LRFD, is this connection capable of supporting a dead load of 150 kip and a live load of 100 kip?
- 5. Find the allowable strength of the welded connection with a minimum throat size shown below. Base metal: S275 Fy = 275N/mm² Fu = 430N/mm² Weld metal tensile strength: Fe = 480N/mm² [all dimensions are in mm] -10mm thick gusset plate 150 125 125 -10mm thick gusset plate 125 VIEW A-A a 125 -PL 150x12 PL 150x12 -PL 150x12 AThe truss member shown in the accompanying illustration consists of two C12 x 25s(A36 steel) connected to a 25 mm gusset plate. How many 22 mm A325 bolts (threads excludedfrom shear plane) are required to develop the full design tensile capacity of the member if it isused as a bearing-type connection? Assume U = 0.85. Use ASD method.In the figure shown, the bolts are 3/4-inch in diameter, and A36 steel is used for all components. Considering both the tension member and the gusset plate, compute the following: Note: Limit the failure path to U-shape 3 a. Design block shear strength of the connection 2" b. Allowable block shear strength of the connection
- Consider the bolted connection from HW06. Assume that the connection is slip-critical, the bolts are A490 in oversize holes, and that both the plate and angles conform to ASTM A36 and have been prepared with Class B surfaces. 1. Compute the design strength (øRn) of the connection considering the limit states of shear rupture of the bolt and bearing and tearout at the bolt holes (remember to compute the effective strength for each individual bolt). 2. Compute the design strength (øRn) of the connection considering the limit state of slip. 3. Check all spacing and edge distance requirements as well as entering and tightening clearances Connection from HW06: PL !" (6) 7/8 DIA. BOLTS z" 3" -2L6x4x%2 LL BBCheck the bolted section of the given gusset plate connection assuming that the connection is done by M12 bolts with a staggered arrangement. The maximum design tensile axial force to be sustained is Ned = 168 kN. Assume a grade of S235 steel. P. Gusset plate BỘ do=13mm Gusset plate O DO t=16mm t-16mm1 Ni.Ed FO NtEd do=13mm do3D13mm G. 40mm 40mm 140 mm 240mm 30mm6) The connection shown in the figure uses 20mm diameter A325 bolts. The tension member is A36 steel (Fy = 248 MPa, Fu = 400 MPa) and the gusset plate is A572 steel (Fy=290 MPa, Fu = 415 MPa). Determine the design strength of the connection (in kN) considering block shear rupture. 37.5 mm 75 mm 37.5 mm 9 mm gusset P 12 mm x 150 mm 37.5 mm 75 mm 37.5 mm