Structural Steel Design (6th Edition)
6th Edition
ISBN: 9780134589657
Author: Jack C. McCormac, Stephen F. Csernak
Publisher: PEARSON
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Chapter 4, Problem 4.6PFS
To determine
The lightest section of
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Prob 01: An 18” depth beam is bolted to a 24” depth girder is connected similar to that in figure shown below. Thediameter of the rivet is 20mm and the angles are each 100mm x 100mm x 12mm thick. For each bolt, assume thatthe allowable bearing stress is 220 MPa. Determine the allowable load P in KN on the connection. *show all theload P in kN for bearing stressBeam web thickness = 5mmGirder web thickness =
Six rivets are used in the connection shown in the figure. If both P=50KN, what is the minimum diameter
rivet is necessary so as not exceed the 70MPa allow shearing stress? What thickness of plate is required
so as not exceed a bearing stress of 140MPA?
p= 50
80 mm
80 mm
100 mm
4. Six rivets are used in the connection shown in the
figure. If both P= 50 kN, what is the minimum diameter
P- 50 rivet is necessary so as not to exceed the 70MPA allow
shearing stress? What thickness of plate is required so
as not to exceed a bearing stress of 140 MPa?
80 mm
80 mm
Ps so
100 mm
Chapter 4 Solutions
Structural Steel Design (6th Edition)
Ch. 4 - Prob. 4.1PFSCh. 4 - Prob. 4.2PFSCh. 4 - Prob. 4.3PFSCh. 4 - Prob. 4.4PFSCh. 4 - Prob. 4.5PFSCh. 4 - Prob. 4.6PFSCh. 4 - Prob. 4.7PFSCh. 4 - Prob. 4.8PFSCh. 4 - Prob. 4.9PFSCh. 4 - Prob. 4.10PFS
Ch. 4 - Prob. 4.11PFSCh. 4 - Prob. 4.12PFSCh. 4 - Prob. 4.13PFSCh. 4 - Prob. 4.14PFSCh. 4 - Prob. 4.15PFSCh. 4 - Prob. 4.16PFSCh. 4 - Prob. 4.17PFSCh. 4 - Prob. 4.18PFSCh. 4 - Prob. 4.19PFSCh. 4 - Prob. 4.20PFSCh. 4 - Prob. 4.21PFSCh. 4 - Prob. 4.22PFSCh. 4 - Prob. 4.23PFSCh. 4 - Prob. 4.24PFSCh. 4 - Prob. 4.25PFSCh. 4 - Prob. 4.26PFS
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- AW 12 x 65 column section shown in the figure is pinned at each end and has an additional support in the weak direction at a point 4.1 m from the top. Use X- 4.8 m K 1 for both directions. X+Y Properties of W 12 x 65 A 12323 mm2 - 134.11 mm ry 76.71 mm Fy- 248 MPa Determine the allowable compressive strength (kN).arrow_forward1. For the Pratt bridge truss and the loading shown below, determine the average normal stress in member BE, knowing that the cross-sectional area of that member is 60 in². NN K 12-12--12--12--| 50 lips 50 kips 50. ips Figure 1 G xfonearrow_forwardA WT205 x 30 structural steel section (see Appendix B for cross-sectional properties) is used for a 8.8 m column. Assume pinned connections at each end of the column. Determine: (a) the slenderness ratio. (b) the Euler buckling load. Use E = 200 GPa for the steel. (c) the axial stress in the column when the Euler load is applied. Part 1 Use Appendix B to look up the cross-sectional area, the area moment of inertia, and the radius of gyration for a WT205 x 30 structural steel section. Answer: A = i mm2 Ix = i x 106 mm4 mm x 106 mm4 ry i mmarrow_forward
- The wall bracket show below carries a load of P Kip. the allowable tensile in the eye bar is 20 ksi, and the allowable shear stress in the pin is 12 ksi. Select: a) The diameter of the eye bard b) the diameter of the pin at A which is double shear c) the diameter of the pin at B which is single One eye-bar 6 ft P kip 4 ftarrow_forward43 OSFu A tension member with an allowable tensile stress of 0.6Fy is connected to the gusset plate using four rivets having a diameter of 34mm. Assume the diameter of the hole is 2mm more than the rivet diameter. It is required to determine the value of b so that the net width along rivets 1-2-3-4 is equal to the net width along 1-2-4. > Determine the value of b > Determine the most critical net area The value of T without exceeding the allowable stress. Gusset plate If failure will occur in djagonal s 2 direction add a value 4g C0mm b. 6. 100mm 400mm 100mm 100mm 12mm 150mmarrow_forward1.Use LRFD and design the tension members of the roof truss shown in Figure below. Use double-angle shapes throughout and assume 10-mm-thick gusset plates and welded connections. Assume a shear lag factor of U = 0.80. The trusses are spaced at 9 meters. Use A36 steel and design forthe following loads.Metal deck : 190 Pa of roof surfaceBuilt-up roof : 575 Pa of roof surfacePurlins : 145 Pa of roof surface (estimated)Roof Live Load : 960 Pa of horizontal projectionTruss weight : 240 Pa of horizontal projection (estimated) 2. Use A36 steel and design sag rods for the truss of Problem 1. Assume that, once attached, the metal deck will provide lateral support for the purlins; therefore, the sag rods need to be designed for the purlin weight only.a. Use LRFD.b. Use ASD.arrow_forward
- Problem 2 Given is a truss structure: Where: • Working shear stress for the rivets is 70 MPa • Working bearing stress due to rivets is 140 Mpa • Thickness of the member is 5 mm • Thickness of the Gusset plate is 6 mm Rivet diameter is 15 mm Determine the no. of rivets to fasten the member BD 80 N 120 N 200 N 4 Pands 4m - 16 marrow_forwardA 15" x 3/8" bar of A572 Gr. 50 steel is used as a tension member. It is connected to a gusset plate with 7/8-in diameter bolts as shown in the figure. Use s = 2.0 and g = 3.0. Determine the design tensile strength of the section based on tensile rupture of the net area. Determine the allowable tensile strength of the section based on yielding of the gross area.arrow_forwardHOMEWORK-1 Зт IF For the truss shown in the figure; a) Calculate the bar forces for F=4000 kg. b) Design members 1-2 and 2-3 assuming that out of plane deflections are restrained and Aer>>10, i.e. global buckling is not the critical failure mode and therefore linear static analysis is sufficient. P.S. Use square rectangular hollow sections in Grade 355 steel. You will have to find the related section tables from the internet. Do not forget to refer to the related EN1993-1-1 tables and equations. Later, you will design the connections (the weld lengths, etc.) and the supports for this problem.arrow_forward
- * A 76 mm x 76mm x 6mm angular section is welded to a gusset plate having a thickness of 8mm as shown in the figure. The length L1 equals 125mm and L2 is 65mm. The angular section has a cross sectional area of 929mm2, Fy=248 MPa, Fu=400MPa. Determine the value of tensile force P based on block shear in gusset plate along the weld in kN. Allowable stresses: Allowable tensile stress (gross area) = 0.6Fy Allowable tensile stress (net area) = 0.50Fu Allowable shear stress (net area) = 0.30Fu P gusset plate L₂= 65 mm 25 mmarrow_forwardDesign the reinforcements of the given T beam below. bf=800mm bw=450mm tf=120mm d=600mm d'=80mm fc'=35MPa fy=350MPa USE NSCP 2015 A.Mu = 1300kN-m, As = B.Mu = 1600kN-m, As = mm2 _mm2, As' = mm2arrow_forwardA 15" x 3/8" bar of A572 Gr. 50 steel is used as a tension member. It is connected to a gusset plate with 7/8-in diameter bolts as shown in the figure. Use s = 2.0 and g = 3.0.a) Determine the design tensile strength of the section based on yielding of the gross area.b) Determine the critical net area of the connection shown.arrow_forward
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