Structural Steel Design (6th Edition)
6th Edition
ISBN: 9780134589657
Author: Jack C. McCormac, Stephen F. Csernak
Publisher: PEARSON
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A reinforced concrete simply supported beam has a span of 30’ and supports service dead load of 1000lbs/ft and a uniform service live load of 1100 lbs/ft in addition to its self-weight. Design a beam sectionto resist the factored external bending moment. Given fc’=4 ksi and fy=60ksi.
Use the Effective Length Method, assume elastic behavior, and use both the LRFD and ASD methods. The columns are assumed to have no bending moments
Design W12 columns for the bent shown in the accompanying figure, with 50 ksi steel.The columns are braced top and bottom against sidesway out of the plane of the frame so that Ky = 1.0 in that direction. Sidesway is possible in the plane of the frame, the x-x axis. Design the right-hand column as a leaning column, Kx = Ky = 1.0 and the left-hand column as a moment frame column, determined from the alignment chart. PD = 350 k and PL = 240 k for each column.The beam has a moment connection to the left column, and has a simple or pinned connection to the right column.
A reinforced concrete simply supported beam has a span of 32’ and supports service dead load of 1050
lbs/ft and a uniform service live load of 1150 lbs/ft in addition to its self-weight. Design a beam section
to resist the factored external bending moment. Given fc’=4 ksi and fy=60ksi.
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- Design a beam for a 30-ft simple span to support the working uniform loads of wD = 1.25 k/ft (includes beam self-weight) and wL = 1.75 k/ft.The maximum permissible total load deflection under working loads is 1/360 of the span. Use 50 ksi steel and consider moment, shear and deflection.The beam is to be braced laterally at its ends and the midspan only.arrow_forwardSelect the lightest W section to carry an axial compression load of 60 kips dead load and 250 kips live load. The member is part of a braced frame and is assumed to be pinned at the top and bottom of its 30 ft length, and in addition, has lateral support in the weak direction at 14 ft from the bottom. Use (a) Fy = 65 ksi.arrow_forwardSelect a lightest A588 Grade 60 wide flange shape for a simply supported beam having a span length of 28 ft to support two concentrated live loads of 40 kips, each load placed 8ft from a support. Lateral supports are provided at the ends of the beam and at the load points. The maximum live load deflection must not exceed L/360.arrow_forward
- A 4.0 m rectangular cantilever beam is loaded with ultimate uniform load Wu=45kN/m over the whole span and concentrated load Pu= 70kN at the free end. Using As=6-25mm, b=250mm, h=400mm, f'c=21MPa, fy=276MPa, cc=50mm, and stirrups=10mm, determine the following: Determine the effective depth of the beam in mm.0 Determine the critical shear Vu in kN.0 Determine the load to be carried by the stirrups Vs in kN.0 show clear solution thank youarrow_forwardAn R.C.C. beam of 6 m span is 30 cm wide and has a lever arm of 55 cm . If it carries a U.D.L of 12 t per m and allowable shear stress is 15 kg/cm2 , the beam A. Is safe in shear B. Is safe with stirrups C. Is safe with stirrups and inclined bars D. Needs revision of sectionarrow_forwardA rectangular beam has a width of 300mm and an effective depth of 510mm. The beam is provided with 10mm vertical U-stirrups with yield strength, fy=275MPa. Concrete strength fc’=27MPa. Design the stirrups for the following factored shear a) 160kN b) 250kNarrow_forward
- A T-beam with bf=700mm, hf=100mm, bw=200mm, h=400mm, cc=40mm, stirrups=12mm, fc'=21 MPa, fy=415 MPa is reinforced by 4-32mm diameter bars for tension only. Calculate the depth of the neutral axisarrow_forwardProblem 04Design a column with an effective length of 22 ft. to support a dead load of 65 k, a live load of 110 k, and a wind load of 144 k. Select the lightest W12 of A992 steel.Problem 05A W10 section is to be selected to support the loads PD = 85 k and PL = 140 k. The member, which is to be 20 ft. long, is fixed at the bottom and fixed against rotation but free to translate at the top. Use A992 steel.arrow_forwardA built-up section consisting of W 350 x 90 with two 12 – mm plates welded to form a box section as shown in figure. The section is used as a column 10 meters long. The column is fixed at both ends, and braced at mid height about the weak axis (Y-axis). Use Fy = 248 MPa. Determine the axial load capacity of the column in kN.arrow_forward
- Select the lightest available W12 to support the axial loads PD= 170 k and PL= 300 k if KI = 16 ft and Fy = 50 ksi (Use IRFD)arrow_forwardDetermine ΦMn and Mn/Ω for a W18 x 46 used as a beam with an unbraced length of the compression flange of 4 ft and 12 ft. Use A992 steel and Cb = 1.0.arrow_forwardA.) If the F = { - 200i + 400j } N , determine the force in each member and state if its in compressions or tension. A.) Using the same given, if the members have a square cross-section with a diagonal of 11.31cm and thickness of 1cm, determine the axial stressess and the factors of safety on each of the member, if the maximum allowable tensile strength is 60kPa and the maximum allowable compressive strength is 70kPa NOTE: Complete solution and units, free body diagrams, table data if possible <up voting!>arrow_forward
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