Beam DesignA roof design supports a dead load of 65 lb/ft2 and a snow load of 40 lb/ft2 In addition, a wind pressure of 20 lb/ft2 (uplift or downward) must be accommodated. Determine the governing load condition
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Beam Design
A roof design supports a dead load of 65 lb/ft2 and a snow load of 40 lb/ft2 In addition, a wind pressure of 20 lb/ft2 (uplift or downward) must be accommodated. Determine the governing load condition
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- 5. Beam Design A roof design supports a dead load of 50 lb/ft² and a snow load of 30 lb/ft² In addition, a wind pressure of 15 lb/ft² (uplift or downward) must be accommodated. Determine the governing load condition.2) What is the design live load for the roof with slope of 1(vertical):2(horizontal) and At of 500 square feet? (Group 2)What is the design live load for the roof with slope of 1 (vertical): 2(horizontal) and at of 500 square feet
- When a roof is subjected to downward wind load, which one of the following multiplication factors for dead loads is considered favourable in Australian Standard (load combination for ultimate limit state, considering both dead load and live load)? O 1.0 O 1.2 O 0.9 O 1.35A flat roof is subject to the following uniformly distributed loads: a dead load of 21 psf (pounds per square foot of roof surface), a roof live load of 12 psf, a snow load of 13.5 psf, and a wind load of 22 psf upward. (Although the wind itself is in a horizontal direction, the force that it exerts on this roof is upward. It will be upward regardless of wind direction. The dead, live, and snow loads are gravity loads and act downward.). If load and resistance factor design is used, compute the factored load (required strength) in pounds per square foot. Which AISC load combination controls? There are 5 load combinations below: Combination 1: 1.4DCombination 2: 1.2D+1.6L+0.5(Lr or S or R)Combination 3: 1.2D+1.6(Lr or S or R) +(0.5L or 0.5W)Combination 4: 1.2D+1.0W+0.5(Lr or S or R)Combination 5: 0.9D+1.0W How to deal with the wind load? If the wind load W=-22 psf, then the result of combination 5 will be -3.1 psf, which is negative. And the tensile strength of materials and…A flat roof is subject to the following uniformly distributed loads: a dead load of 21 psf (pounds per square foot of roof surface), a roof live load of 12 psf, a snow load of 13.5 psf, and a wind load of 22 psf upward. (Although the wind itself is in a horizontal direction, the force that it exerts on this roof is upward. It will be upward regardless of wind direction. The dead, live, and snow loads are gravity loads and act downward.) a. If load and resistance factor design is used, compute the factored load (required strength) in pounds per square foot. Which AISC load combination controls? b. If allowable strength design is used, compute the required load capacity (required strength) in pounds per square foot. Which AISC load combination controls?
- A flat roof is subject to the following uniformly distributed loads: a dead load of 29 psf (pounds per square foot of roof surface), a roof live load of 12 psf, a snow load of 13.5 psf, and a wind load of 22 psf upward. (Although the wind itself is in a horizontal direction, the force that it exerts on this roof is upward. It will be upward regardless of wind direction. The dead, live, and snow loads are gravity loads and act downward.) a. If load and resistance factor design is used, compute the factored load (required strength) in pounds per square foot. Which AISC load combination controls? (Express your answer to three significant figures.) R₁ psf -Select- b. If allowable strength design is used, compute the required load capacity (required strength) in pounds per square foot. Which AISC load combination controls? (Express your answer to three significant figures.) Ra = psf -Select-Determine the LRFD factored load for the following situations on a steel column (Ignore anyroving potential concentrated live loads);a. Tributary area is 324 SF. Column self-weight is 2 kips. The self-weight of the flooring systemthat the column supports is 63 PSF. The column supports a typical office space in an officebuilding. The super-imposed dead load is 10 PSF.b. Tributary area is 900 SF. The column is 15’ tall and weighs 145 pounds per linear foot. Thecolumn is located within a ‘heavy’ storage warehouse. The total dead load (not including theself-weight of the column) is 85 PSF.A rigid building structure has the following particulars: Dimensions: 10 m x 20 mx 16.6 m high Located in an area classified as exposure B. Is neither open nor partially closed. Risk category: I Wind is 120 km/h and acts on the wall with the higher dimension. What is the external wind pressure on the side wall? O a. formula: wind pressure = qGC₂ = (0.613K₁K₂tKalV²) X G X Cp -248 N/m² O b. -896 N/m² O c. -386 N/m² O d. -333 N/m²
- A simply supported timber beam with length L - 5m carries a uniformly distributed load w - 8 kN/m. Determine the magnitude of the maximum compression bending stress that occurs in the beam at any location within the 5-m span length. 300 mm 100 mm O 16.67 MPa O 21.39 MPa O 19.63 MPa O 10.08 MPa O 15.13 MPa Save for Later Attempts: 0 of 1 used Submit AnswerProblem 3: The accompanying illustration shows the arrangement of beams and girders that are used to support a 6-in reinforced concrete floor for a small industrial building. Design the beams and girders assuming that they are simply supported. Assume full lateral support of the compression flange and a live load of 120 psf. Concrete unit weight is 150 lb/ft' and Fy 50 ksi. %3D -エ- エーT Girder Column Beam Note: Floor continues on all sides *-エ 3 at 15 ft = 45 ft25- A wood beam is continuously supported on 5 shores. The load on beam is 2 lb/ft' and the beam span is 10'-0". What is the maximum Axial load (Ib) on the shore? a) 7.86 b)20.44 C) 100 d) 22.86 e) 18.58