Beams will be designed for the roof and floor systems of an office building. The loads for these systems are as follows: Roof: dead load = 30 psf, roof live load = 20 psf, snow load = 21 psf, and a rain load consisting of 4 inches of water Floor: dead load = 62 psf and occupancy live load = 80 psf. a. For each of these systems, determine the required factored load capacity for LRFD. Which load combination controls? b. For each of these systems, determine the required ASD load capacity. Which load combination controls?

Beams will be designed for the roof and floor systems of an office building. The loads for these systems are as follows: Roof: dead load = 30 psf, roof live load = 20 psf, snow load = 21 psf, and a rain load consisting of 4 inches of water Floor: dead load = 62 psf and occupancy live load = 80 psf. a. For each of these systems, determine the required factored load capacity for LRFD. Which load combination controls? b. For each of these systems, determine the required ASD load capacity. Which load combination controls?

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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https://www.cheThe various axial loads for a building column have been computed according to the applicable building code, with the following results: dead load =200k ;load from roof=50k (roof live load); live load from floors (reduced as applicable for large floor area and multistory columns) =250k; compression wind=128k; tensile wind=104k; compression earthquake=60k; and tensile earthquake=70k. Determine the critical design column load, Pu, using the LRFD load combinations.
The loads on a roof beam consist of a roof love load of 0.23 kips/ft, dead load of 0.15 kips/ft, and a snow load of 0.10 kips/ft. If the load and resistance factor design( strength design) is used, determine the factored load ( required strength) to be used in the design of this beam. Which equation controls? Provide the equation with numbers and the units for the final answer.
The various axial loads for a building column have been computed according to the applicable building code, with the following results: dead load =200k; load from roof=50k (roof live load); live load from floors (reduced as applicable for large floor area and multistory columns) =250k; compression wind=128k; tensile wind=104k; compression earthquake=60k; and tensile earthquake=70k. Determine the critical design column load, Pu, using the LRFD load combinations. LRFD: 1.) U=1.4D 2.) U=1.2D +1.6L + 0.5(Lr or S or R) 3.) U=1.2D + 1.6(Lr or S or R) + (L* or 0.5W) 4.) U= 1.2D + 1.0W + L* + 0.5 (Lr or S or R) 5.) U=1.2D + 1.0E + L* + 0.2(S) 6.) U= 0.9D + 1.0W 7.) U= 0.9D + 1.0E
Structural steel buildings frequently are designed with diagonal bracing systems to resist lateralloads (horizontal forces resulting from wind or earthquake loadings). A certain bracing system issubjected to the following loads: dead load = 13.3 kips, occupancy live load = 6.9 kips, roof liveload = 1.3 kips, snow load = 1.3 kips, wind load = 150.6 kips, and earthquake load = 161.1 kips.Determine the required factored load capacity for LRFD. Which load combination controls?
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 Using a T-beam geometry formed from monolithic construction, determine the effective flange width of a typical interior beam in mm.
Structural steel buildings frequently are designed with diagonal bracing systemsto resist lateral loads (horizontal forces resulting from wind or earthquakeloadings).A certain bracing system is subjected to the following loads:dead load = 13.5 kipsoccupancy live load = 6.8 kipsroof live load = 1.4 kipssnow load = 1.4 kipswind load = 150.5 kipsearthquake load = 161.2 kipsa. Determine the required factored load capacity for LRFD. Which AISC loadcombination controls?b. Determine the required ASD load capacity. Which AISC load combinationcontrols?Note: All given loads are service loads.
Structural steel beams are to be placed at 7 ft 6 in on center under a reinforced concrete floor slab. If they are to support a service dead load D = 64 psf of floor area and a service live load L = 100 psf of floor area, determine the uniform load per foot which each beam must support using the ASD expressions.
Determine the maximum combined loads USING THE RECOMMENDED AISC EXPRESSIONS FOR LRFD. D = 900 lb L = 500 lb Lr = 2500 lb E = ±6500 lb
A column in the upper story of a residential building is subjected to a compressive load from the following sources: dead load = 35 kN, occupancy live load = 4.8 kN, roof live load = 21 kN, and rain load = 22 kN. 1. If load and resistance factor design is used, compute the factored load to be used in the design of the column. Which NSCP load combination controls? a. ?.?(?+?) b. ?.?(? + ? + ?) + ?.?(? + ?) + ?.?(?? ?? ?) c. ?.?? + ?.?(?? ?? ?) + (??? ?? ?.??) d. ?.?? + ?.?? + ??? + ?.?(?? ?? ?) e. ?.?? + ?.?? + ??? f. ?.?? + ?.?? + ?.?? g. ?.?? + ?.?? + ?.?? 2. What is the value of the required design strength of the column in Item 1? 3. What is the required nominal strength of the column in Item 1 for a resistance factor of 0.90? 4. If allowable strength design is used, compute the required load capacity to be used in the design of the column. Which NSCP load combination controls? a. ? + ? b. ? + ? + ? + ? + ? c. ? + ? + ? + (?? ??…
The maximum safe load of a horizontal rectangular beam of a given material,supported at the ends, varies directly as the breadth and the square of the depth, and inversely as the distance between supports. If the maximum safe load is 3000 lbs for a beam 5 inches wide and 12 inches deep, with supports 12 feet apart, find the maximum load for a beam which is 10 cm wide and 10 inches deep, with supports 3 meters apart.
Provide the details in your solution. The maximum safe load of a horizontal rectangular beam of a given material,supported at the ends, varies directly as the breadth and the square of the depth, and inversely as the distance between supports. If the maximum safe load is 3000 lbs for a beam 5 inches wide and 12 inches deep, with supports 12 feet apart, find the maximum load for a beam which is 10 cm wide and 10 inches deep, with supports 3 meters apart.
Determine the maximum combined loads using the recommendedAISC expressions for LRFD. D = 9000 lb, L = 5000 lb, Lr = 2500 lb, E = ;6500 lb (Ans. 20,050 lb)