Steel Design (Activate Learning with these NEW titles from Engineering!)
6th Edition
ISBN: 9781337094740
Author: Segui, William T.
Publisher: Cengage Learning
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Chapter 10, Problem 10.7.3P
To determine
Flange and web dimensions for a plate girder using LRFD.
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A floor system supporting a 6 in. concrete slab is shown in Figure P11.4. The live load is 100 psf. Using LRFD, considering bending only select the most economical sections for: 1. The typical beam of A992 steel. 2. The typical girder of A992 steel. The concrete floor provides full lateral support for the compression flange for both the beams and the girders. Assume the weight of concrete for slab = 150 lb/ft^3
Compute Nominal Moment Capacity of the following L beam
Slab (flange) thickness = 4 in. Center to center distance of web = 13 ft. Web width = 12 in. Total thickness (flange + web) = 26 in. Depth, d = 22 in. dt = 23 in. Reinforcement 6- # 7 bars. Compressive strength = 4500 psi. Yield strength of steel = 60000 psi. Span = 25 ft.
ACI Code
A steel beam is made up of a wide flange section whose total depth is 600mm, width of the flange is 300mm, flange thickness of 20mm and moment of inertia Ix = 1.16x109 mm4 . Its web thickness is 10mm and has a simple span of 9m. A 40 kN/m uniform load is loaded throughout its span and 200kN load acting at midspan. Allowable bending stress of the beam is 148.8 MPa. Situation No.1.1 Determine the length of top and bottom reinforcing plates if necessary
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Steel Design (Activate Learning with these NEW titles from Engineering!)
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- A steel beam is made up of a wide flange section whose total depth is 600mm, width of the flange is 300mm, flange thickness of 20mm and moment of inertia Ix = 1.16x109 mm4 . Its web thickness is 10mm and has a simple span of 9m. A 40 kN/m uniform load is loaded throughout its span and 200kN load acting at midspan. Allowable bending stress of the beam is 148.8 MPa. Situation No. 1 1. Determine the required section modulus without exceeding the allowable bending stress. 2. Determine the section modulus of the wide flange. 3. Determine the width of top and bottom reinforcing plates 12mm thick if necessary. 4. Determine the length of top and bottom reinforcing plates if necessary.arrow_forwardA wood beam AB on simple supports with spanlength equal to 10 ft is subjected to a uniform load ofintensity 125 lb/ft acting along the entire length of thebeam, a concentrated load of magnitude 7500 lb acting ata point 3 ft from the right-hand support, and a momentat A of 18,500 ft-lb (see figure). The allowable stresses inbending and shear, respectively, are 2250 psi and 160 psi.(a) From the table in Appendix G, select the lightestbeam that will support the loads (disregard theweight of the beam).(b) Taking into account the weight of the beam(weight density = 35 lb/ft3 ), verify that theselected beam is satisfactory, or if it is not, selecta new beam.arrow_forwardFor the beam loaded as shown, determine EIy midway between the supports.arrow_forward
- PLEASE HELP ME How to solve Cantilever Method! No need SOLUTIONS Using Cantilever Method, determine the following in kN (4 decimal places): ________1. Axial Force at Member AC & CA ________2. Axial Force at Member BD & DB ________3. Axial Force at Member CF & FC ________4. Axial Force at Member DG & GD ________5. Axial Force at Member EH & HE ________6. Axial Force at Member FI & IF ________7. Axial Force at Member GJ & JG ________8. Axial Force at Member HK & KHarrow_forwardGiven the following elements of a T-beam: Flange width bf= 900 mm, Flange thickness t= 1100 mm, Width of web bw= 310 mm, Effective depth d= 460 mm, Concrete strength FC 20.7 MPa, Steel Strength fy=414 MPa. If the beam is reinforced for tension only, determine the following:5. The balanced steel area6. The nominal and ultimate balanced moment capacity7. The maximum steel area8. The nominal maximum moment capacity9. The ultimate maximum moment capacity Please answer asap, Thanks.arrow_forwardA 5.5m simple beam carries a uniform ultimate load Wu. The beam is laterally supported and has compact section. The properties of the section are: rx=105.16mm, ry=22.2mm, Sx=308000mm^3, Sy=35000mm^3, Zx=357000mm^3, Zy=55000mm^3, and Fy=248MPa. Calculate the ultimate load capacity Wu of the beam in KN/m considering flexure. Express your answer in 3 decimal places.arrow_forward
- Compute Nominal Moment Capacity of the following T beam. Slab (flange) thickness = 4 in. Center to center distance of web = 13 ft. Web width = 12 in. Total thickness (flange + web) = 26 in. Depth, d = 22 in. dt = 23 in. Reinforcement 8 - #8 bars. Compressive strength = 4500 psi. Yield strength of steel = 60000 psi. Span = 25 ft. ACI Code Manualarrow_forwardPlease answer problem 3 and determine the nominal or theoretical moment capacity Mn of each beam if fy = 60,000 psi f'c = 4000 psiarrow_forwardA steel column (E = 200 GPa) is 9 m long, embedded in aone end and supported on the other. If the section is shown below, determine the buckling tension.arrow_forward
- Determine the ultimate moment capacity of a beam of dimensions b=250mm and d=350mm and that has 300 mm? of reinforcing steel. Assume that fy-400 MPa and f'c=25 MPa.arrow_forwardA 300 mm x 125 mm I-beam has flanges 13 mm thick and web 8.5 mm thick. Calculate the shape factor and the moment of resistance in the fully plastic state. Take бy = 250 MN/m2 and Ixx = 85 x 10-6 m4.arrow_forwardThe beam in the figure below has continuous lateral support. If the live load is twice the dead load, what is the maximum total service load, in kips/ft, that can be supported? A992 steel is used.arrow_forward
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