A flat slab is supported by 18"x18" columns spaced at 26 ft in both directions. The slab is 10" and has a concrete strength, F'c = 5000 psi and reinforcement having a yield strength Fy = 60,000 psi. The slab is subjected to a factored load qu = 260 psf (including self weight of the slab). Determine the following: a) The width of the column strip and middle strip b) The design moment for the column strip at the typical interior bay at the column and at midspan c) Check punching at a typical interior column. The total moment transferred to the column is 50 k- ft.

A flat slab is supported by 18"x18" columns spaced at 26 ft in both directions. The slab is 10" and has a concrete strength, F'c = 5000 psi and reinforcement having a yield strength Fy = 60,000 psi. The slab is subjected to a factored load qu = 260 psf (including self weight of the slab). Determine the following: a) The width of the column strip and middle strip b) The design moment for the column strip at the typical interior bay at the column and at midspan c) Check punching at a typical interior column. The total moment transferred to the column is 50 k- ft.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Read the question carefully and give me all right solutions. Note: kindly answer all(a, b, c, d) otherwise leave it
I need solve this question in concrete by ACI CODE
A rectangular beam has the dimensions b=12in., h=26in., and d=24 in. and is reinforced with three No. 11 bars so that As-4.68 in.². The normal-weight concrete compressive strength is 5000 psi. and the tensile strength (modulus of rupture) can be calculated as per ACI318-14. The Grade of the steel is 60. Determine the nominal moment strength M, and the moment capacity Mn. b=12 in. Figure 1. d=24 in. h=26 in.-
A rectangular tied column carries a factored axial load of 2060 kN. The width of the column is limited to 350 mm and the clear cover of the column is 40 mm. If the concrete compressive strength is 28 MPa, the yield steel strength is 415 MPa, and the steel ratio is 0.02. a. Determine the dimensions of the cross-sectional area of the column. b. Determine the number of 20-mm diameter bars needed for reinforcement. C. Determine the clear spacing of the longitudinal bars.
A cantilever slab has a span of 2.40 m. It is 150 mm thick and has an effective depth d = 110 mm. It is reinforced with 16 mm rebars @ 150 mm o.c. If f’c = 27 MPa, fy = 276 MPa, what is the safe live load that the slab can carry? Use 2015 NSCP strength design. Unit weight of concrete for DL: 23.56 KN/cu m.
1. The column section shown is reinforced with 10 bars having b-400mm, bar size-28mm, fc-35MPa, concrete cover = 50mm, tie diameter = 10mm, and fy = 420MPa. Considering bending along the strong axis for a balanced section, calculate a. the depth of compression block in the column in mm. b. the stress in the middle layer of steel reinforcement in MPa. c. the compressive force in the concrete in kN. d. the compressive force in the extreme compression reinforcement in kN. e. the ultimate axial load capacity of the column in kN. f. the eccentricity of the column in mm. g. the ultimate moment capacity of the column in kN.m h. the pure axial load capacity of the column. b=400mm 28mm 10 bars 600 mm
Item 5 Column AB is made from high strength pre-cast concrete and reinforced with four in diameter A-36 steel rods. The allowable normal stress for the high strength concrete and the steel are (allow) con = 2.6 ksi and (allow) st = 24 ksi, respectively. The modulus of elasticity for high strength concrete is 4.2 x 10³ ksi and for A-36 steel is 29 x 10³ ksi. (Figure 1) Figure 1 ▾of 1 10 ft a P B9 in. 9 in. Section a-a Part A Determine the magnitude of the maximum allowable floor loading P. Express your answer to three significant figures and include the appropriate units. μA Pmax= 158.91 kips Submit My Answers Give Up Incorrect; Try Again; 2 attempts remaining ? Provide Feedback Continue
A rectangular beam 250 mm wide, 500 mm deep is reinforced at the bottom with a 4-20mm diamter bars and at the top with 2-16 mm bars. Concrete cover to bar centroid at the top is 80 mm and at the bottom is 70 mm. Use concrete strength f'c = 32.09 MPa and steel yield strength fy=345 MPa for 20mm bars and fy=275 MPa for 16mm bars. Determine the maximum steel area for a tension-conctrolled singly reinforced condition in positive bending with the given material strength.
Using the following details, Design the shear reinforcement along the length of the beam if it is reinforced with 3-25mm diameter rebars. Sketch the stirrup pattern. Unit Weight of Concrete = 23.123 kN per cu.m. Shear Strength Reduction Factor = 0.75 Clear Cover = 40 mm Beam dimension is 300mm x 500mm Stirrups, fy = 275 MPa Main Reinforcing Steel, fy = 415 MPa Concrete, fc' = 27.5 MPa. The 3-m-span cantilever beam (the free end on the right side) carries a uniform dead load of 30 kN/m (Beam weight not included), and a varying live load of 15 kN/m that reduces to zero at the end of the beam.
Subject: Pre-stressed Concrete Design (Civil Engineering) Note: NSCP (2015)
Subject: Reinforced Concrete Design IS 456 A rectangular beam has a width of 300mm and an effective depth of 537.50 mm to the centroid of tension steel bars. Tension reinforcement consists of 6 - 28mm dia in two rows, compression reinforcement consists of 2 – 22mm dia, fc' = 27.6MPa, fy = 414.7MPa, d' = 60mm, L = 4m, the Unit weight of concrete is 24.56kN/cu.m If the beam is simply supported carrying a uniformly distributed dead load of 10kN/m, a uniformly distributed live load of 5kN/m, the safe concentrated live load that it could carry acting at the midspan is ______kN.
A rectangular concrete beam having width of 250 mm and effective depth of 350, will be designed to carry factored design load as stated. The steel yield fy=275 MPa and concrete strength fc'=20.7 MPa. If the compression steel is found necessary, the centroid of compression steel will be placed 60 mm from the extreme compression fiber of the beam. Determine the required area of compression reinforcement, As', if the beam is to carry a factored design moment of 135 kN-m.