Homework Answers
dead load from floor = 60 psf
live load = 70 psf
tributary width = 10 ft
factored area load on beam = 1.2*60 + 1.6*70 = 184 psf
factored load on beam = 184*10=1840 plf = 1.84 klf
span of beam = 26 ft
maximum moment in beam = 1.84*262/8=155.5 kip-ft
given beam is continuosuly braced by deck. Therefore, plastic moment capapcity of beam will be mobilised
the lightest W-section beam that has plastic moment capacity greater than 155.5 kip-ft is W16x26
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Design a W-shape floor beam for the intermediate beam marked A on the floor plan shown...
the beam is loaded uniformly from the floor with a live load of 80 pounds per...
the beam is loaded uniformly from the floor with a live load of
80 pounds per square foot (psf) and a dead load in addition to the
beam self-weight of 60 psf. the beam will have full lateral support
provided by the floor deck, and a compact section will be selected.
Use A992 steel. Design a W-shape floor beam for the intermediate
beam marked A on the floor plan shown below.
a) Use LRFD.
b) Use ASD.
Is loaded uniformly...
1. The floor framing plan is shown below. Design the beams B1, B2, and Ba Check...
1. The floor framing plan is shown below. Design the beams B1, B2, and Ba Check the beam weight for each beam. The bay does not repeat. Note The dead load does not include the weight of the beam Select the most economical section for each design to be fully laterally braced. Use A36 steel where Beam B1 frames into it only. Use A992 Grade 50 steel is considered fully braced by the slab it supports. Use A992 Grade 50...
Check the adequacy of a W18X35 for a beam (the beam in the vertical direction in...
Check the adequacy of a W18X35 for a beam (the beam in the vertical direction in the plan) in a floor framing system in terms of 1) bending strength; 2) shear strength and 3) deflection. The beams support a 4-inch-thick reinforced concreted floor slab (with a density of 150 lbs/ft?). Besides the weight of the structure, loads consist of a uniform live load of 80 psf and moveable partitions (with a uniformly distributed load of 20 psf of floor surface)....
Please refer AISC 15th edition 2. Select the lightest W shape to carry a uniformly distributed...
Please refer AISC 15th edition
2. Select the lightest W shape to carry a uniformly distributed dead load of 0.5 kips/ft and a live load of 1.0 kips/ft on a simply supported span of 42 ft. Adequate lateral support is provided. The live load deflection is limited to 360, Use A572 Grade 50 steel and LRFD. (credit weight 30)
Please refer AISC 15th edition 2. Select the lightest W shape to carry a uniformly distributed dead load of 0.5 kips...
Please refer AISC 15th edition
2. Select the lightest W shape to carry a uniformly distributed dead load of 0.5 kips/ft and a live load of 1.0 kips/ft on a simply supported span of 42 ft. Adequate lateral support is provided. The live load deflection is limited to 360, Use A572 Grade 50 steel and LRFD. (credit weight 30)
A three-story building has a floor layout as shown in Figure 1 with 30 ft bays...
A three-story building has a floor layout as shown in Figure 1 with 30 ft bays in each direction. It must support a uniform dead load of 90 psf and a uniform live load of 80 psf. For LRFD design, determine the required moment and shear strength for beams and required axial strength for columns indicated below. In the calculations, assume all beams and girders are simply supported. a) The beam marked with #1 if the deck spans from line...
3. Given a. W27X84 A992 Steel beam is simply supported over a 25' FT beam length. b. The compress...
Steel Design
3. Given a. W27X84 A992 Steel beam is simply supported over a 25' FT beam length. b. The compression flange of the beam is fully braced along the beam length. c. A uniformly distributed service dead load of 2.5 KLF. d. A uniformly distributed service live load of 3.5 KLF. e. A live load deflection limit of L/360. A dead live load deflection limit of L/240. f. Neglect the self-weight of the beam in all calculations. Determine: The...
An A992 beam, simply supported at both ends, spans 20 ft and is loaded at mid-span...
An A992 beam, simply supported at both ends, spans 20 ft and is loaded at mid-span with a dead load of 8.o kips and live load of 24.0 kips, in addition to its self-weight. Assume full lateral support and a compact section. Select the lightest weight wide-flange members with respect to bending capacity. Does the member selected in part (a), satisfy the live load deflection criteria of L/360.? Does the member selected in part (a), satisfy the live load deflection...
Problem 3: Design of Steel Beam for Bending with Varying Unbraced Lengths Select the lightest A992...
Problem 3: Design of Steel Beam for Bending with Varying Unbraced Lengths Select the lightest A992 steel W-shape for the beam shown below using LRFD. Only consider design (neglect shear a bracing situations: a. Continuous lateral support of the compression flange b. Lateral support at beam ends and at the point of the concentrated load c. Lateral support only at beam ends PD = 10k PL-20k WD-3.33 k/ft w, = 6.67 k/ft 10' 20' 30'
structural design in steel Q4) Select a W-shape beam for the following conditio Beam spacing 8...
structural design in steel
Q4) Select a W-shape beam for the following conditio Beam spacing 8 ft - Span length 32 ft Slab and deck combination weight- 50 psf Partition load 20 psf; - Ceiling weight 7 psf Live load 120 psf; The maximum live load deflection cannot exceed L/360. F, = 50 ksi
the beam is loaded uniformly from the floor with a live load of
80 pounds per square foot (psf) and a dead load in addition to the
beam self-weight of 60 psf. the beam will have full lateral support
provided by the floor deck, and a compact section will be selected.
Use A992 steel. Design a W-shape floor beam for the intermediate
beam marked A on the floor plan shown below.
a) Use LRFD.
b) Use ASD.
Is loaded uniformly...
1. The floor framing plan is shown below. Design the beams B1, B2, and Ba Check the beam weight for each beam. The bay does not repeat. Note The dead load does not include the weight of the beam Select the most economical section for each design to be fully laterally braced. Use A36 steel where Beam B1 frames into it only. Use A992 Grade 50 steel is considered fully braced by the slab it supports. Use A992 Grade 50...
Check the adequacy of a W18X35 for a beam (the beam in the vertical direction in the plan) in a floor framing system in terms of 1) bending strength; 2) shear strength and 3) deflection. The beams support a 4-inch-thick reinforced concreted floor slab (with a density of 150 lbs/ft?). Besides the weight of the structure, loads consist of a uniform live load of 80 psf and moveable partitions (with a uniformly distributed load of 20 psf of floor surface)....
Please refer AISC 15th edition
2. Select the lightest W shape to carry a uniformly distributed dead load of 0.5 kips/ft and a live load of 1.0 kips/ft on a simply supported span of 42 ft. Adequate lateral support is provided. The live load deflection is limited to 360, Use A572 Grade 50 steel and LRFD. (credit weight 30)
Please refer AISC 15th edition
2. Select the lightest W shape to carry a uniformly distributed dead load of 0.5 kips/ft and a live load of 1.0 kips/ft on a simply supported span of 42 ft. Adequate lateral support is provided. The live load deflection is limited to 360, Use A572 Grade 50 steel and LRFD. (credit weight 30)
A three-story building has a floor layout as shown in Figure 1 with 30 ft bays in each direction. It must support a uniform dead load of 90 psf and a uniform live load of 80 psf. For LRFD design, determine the required moment and shear strength for beams and required axial strength for columns indicated below. In the calculations, assume all beams and girders are simply supported. a) The beam marked with #1 if the deck spans from line...
Steel Design
3. Given a. W27X84 A992 Steel beam is simply supported over a 25' FT beam length. b. The compression flange of the beam is fully braced along the beam length. c. A uniformly distributed service dead load of 2.5 KLF. d. A uniformly distributed service live load of 3.5 KLF. e. A live load deflection limit of L/360. A dead live load deflection limit of L/240. f. Neglect the self-weight of the beam in all calculations. Determine: The...
An A992 beam, simply supported at both ends, spans 20 ft and is loaded at mid-span with a dead load of 8.o kips and live load of 24.0 kips, in addition to its self-weight. Assume full lateral support and a compact section. Select the lightest weight wide-flange members with respect to bending capacity. Does the member selected in part (a), satisfy the live load deflection criteria of L/360.? Does the member selected in part (a), satisfy the live load deflection...
Problem 3: Design of Steel Beam for Bending with Varying Unbraced Lengths Select the lightest A992 steel W-shape for the beam shown below using LRFD. Only consider design (neglect shear a bracing situations: a. Continuous lateral support of the compression flange b. Lateral support at beam ends and at the point of the concentrated load c. Lateral support only at beam ends PD = 10k PL-20k WD-3.33 k/ft w, = 6.67 k/ft 10' 20' 30'
structural design in steel
Q4) Select a W-shape beam for the following conditio Beam spacing 8 ft - Span length 32 ft Slab and deck combination weight- 50 psf Partition load 20 psf; - Ceiling weight 7 psf Live load 120 psf; The maximum live load deflection cannot exceed L/360. F, = 50 ksi
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