A square footing 2.5m x 2.5 m supports a square column 300mm x 300mm at its center. Concrete cover to bar centroid = 100mm. Ultimate load combination is 1.2DL + 1.6L. Column loads aee service conditions: DL = 680 kN LL = 400kN f'c = 20.7 Mpa fy = 275 MPa Calculate the nominal punching-shear stress acting at the critical section of the footing slab if the thickness of the slab is 450 mm. (Correct Answer 1.99)

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Q: enter. Column loads are service conditions: DL = 346 kN LL = 231 kN f’c = 21 MPa

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Q: PROBLEM 1 A square footing 2.4m x 2.4m x 0.45m thick supports a rectangular column 0.35m x 0.40m at…

A: Live load = 400kn ,  Dead load = 680 kN , f'c = 207 mpa  , fy = 275 mpa load on soil =…

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Q: 1.50 The cylindrical steel column has an outer diameter of 4 in. and inner diame- ter of 3.5 in. The…

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Q: 2. A uniformly loaded slab has a simple span of 4.3 m. In addition to its dead weight, the slab…

A: Given : Span = 4.3 m Live load = 1.9 kPa = 1.9 kN/m2 fc = 20.7 MPa fy = 330 MPa

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Q: supports

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Q: 1. A square footing 1.6m x 1.6m having a thickness of 500 mm supports an interior 400 mmx400 mm…

A: Answer We need to calculate the safe bearing capacity of soil using the given data and Terzaghi's…

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Q: Problem 4: Design the reinforcement for the footing, which supports the column of size 400 mm × 400…

A: Solution:- Factored moment Mu=1.550+25 =112.5 KN-m Reinforcement required in long or x- direction,…

Q: a square footing 2.4 m x 2.4 m x 0.45 m thick supports a 300 mm square column at its center. column…

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Q: SITUATION. A 250 x 300 mm concrete beam is prestressed with a pre-stressing force of 530 kN at an…

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Q: A square footing 2.2 m x 0.31 m thick supports a 300 mm square column at its center. Column loads…

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Q: The beam has a width of 280mm and an overall depth of 600mm. Concrete cover is 60mm from the…

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Q: square footing 2.4 m x 0.32 m thick supports a 300 mm square column at its center. Column loads are…

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Q: A rectangular beam has a width of 260 mm and an overall depth of 470 mm. concrete cover is 60 mm…

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Q: A square footing 2.1 m x 0.31 m thick supports a 300 mm square column at its center. Column loads…

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Q: A rectangular footing 2.1 m x 3.6 m x 0.35 m thick supports a 300 mm square column at its center.…

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Q: Q2: A ring foundation having load equal to 400kPa is resting on a saturated clay soil layer, the…

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Q: A square footing 2.5m x 2.5 m supports a square column 300mm x 300mm at its center. Concrete cover…

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Q: es of Reinforced and Prestressed Coi ptions are made, verify if assumptio rced rectangular beam with…

A: data we have  width of beam b = 197.5mm effective depth  of beamd = 317.5mm cmpressive strength of…

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A: Solution: Given: Square footing = 2.5 m x 2.5 m thickness = 500 column = 400 mm x 400 mm Allowable…

Load and resistance factor design

Load and resistance factors design (LRFD), also known as Limit state design (LSD), refers to the design method used in building engineering. A boundary condition is a condition of a structure where it can no longer meet the relevant design requirements. The condition may refer to the load level or other actions on the structure, while the terms refer to the integrity of the structure, suitability for use, durability, or other design requirements. A structure designed for LRFD is limited to keeping track of all possible actions during its design time and is always ready for use, with the appropriate level of reliability in each boundary condition. LRFD-based construction codes clearly define the appropriate levels of reliability in their instructions.