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-

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-

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A post-tensioned bonded concrete beam has a prestress of 1560 kN in the steel immediately after prestressing which eventually reduces to 1330 kN. The beam carries two live loads of 45 kN each in addition to its own weight of 4.40 kN/m. Compute the extreme fiber stresses at mid-span:a) under the initial condition with full prestress and no live load; b) under final condition after all the losses have taken place and with full live load.
Situation 5. A floor slab 100 mm thick is cast monolithically with beams 300 mm wide 500 mm deep spaced 1.5 m on centers, on simple supports over a span of 6.0 m. The floor supports a superimposed service dead load of 1.77 kPa and service live load of 4.8 kPa. Using f'c 21 MPa, long bar fy = 415 MPa, calculate: 12. Factored uniform load on a typical interior beam in kN/m using load factors of 1.2 for dead load and 1.6 for live load. A. 18.68 B. 17.35 A. 1,800 B. 1,500 C. D. 13. Using a T-beam geometry formed from monolithic construction, determine the effective flange width of a typical interior beam in mm. 22.48 25.78 A. 495 B. 560 C. 1,200 D. 1,900 14. Using a T-beam geometry, determine the required area in mm² of 16-mm-dia. flexure bars for maximum ultimate bending. C. D. 620 448
PLEASE ANSWER NUMBER 5.32 IN MECH 222 : PLEASE GIVE DETAILED SOLUTIONS AND CORRECT ANSWERS. I WILL REPORT TO BARTLEBY THOSE TUTORS WHO WILL GIVE INCORRECT ANSWERS.
A 4-storey with Roof deck AFP armory is to be constructed in Sulu. The facility is essential for the housing of the Philippine Army's newly purchased weapons, ammunitions and explosives. The location of the facility is 7.5 km from the known source which is capable of producing a magnitude 6.7 earthquake. The structure is a Steel MRF with an overall height of 14m from the NGL. The weight per level of the slabs and stairs is equal to 1740 kN. For the walls at the typical levels, the weight is computed as 2362.5 kN and for the parapet at the roof deck level, the weight is computed as 388.8 kN. An equipment 2.0 meters high with a hexagonal cross - sectional area whose sides equal to 1 meter is installed at the second level and has a weight of 100 kPa. Using R = 8.5, which of the following most nearly gives the lateral force at the 4th level in kN? Use Soil Type A.
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Immediately after prestressing, a post-tensioned bonded concrete beam has a prestress of 1560kN in the steel, which gradually reduces to 1330 kN. In addition to its own weight of 4.40 kN/m,the beam bears two live loads shown in the figure below. Calculate the mid-span fiber stresses: a. with full prestress and no live load in the initial conditionb. with full live load and in final condition after all losses had occurred
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True or false, the load on a column for my particular floor depends on the tributary area of the column on the floor?
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