Q1 A simply supported beam of size 260 X400 mm effective depth and 5.75 m effective span is resting on 450 mm wide supports. Given data Height of 200 mm thick wall on the beam is 4m. DI on the beam from slab = 8.75 kN/m IL from slab 5.25 kN/m Consider effective cover to reinforcement as 30 mm fyk = 500 N/mm2 for steel and fck = 25 N/mm2 for concrete respectively Design the simply supported beam for flexure and shear Sketch the details of reinforcement at the mid span

Q1 A simply supported beam of size 260 X400 mm effective depth and 5.75 m effective span is resting on 450 mm wide supports. Given data Height of 200 mm thick wall on the beam is 4m. DI on the beam from slab = 8.75 kN/m IL from slab 5.25 kN/m Consider effective cover to reinforcement as 30 mm fyk = 500 N/mm2 for steel and fck = 25 N/mm2 for concrete respectively Design the simply supported beam for flexure and shear Sketch the details of reinforcement at the mid span

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

11. In reinforced beam having a width of 300 mm and an effective depth of 600 mm, carries a moment of 100 kN-m, which developed a stress (fc) of 5 MPa in the Concrete. Considering Cracked Analysis. b) Compute the steel reinforcement required (As). Take n = 9. %3D
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.
A pretensioned prestressed concrete beam of span 6.8 m and of size 360 mm x 600 mm is subjected initially to a prestressing force of 1650 kN provided at an eccentricity of 160 mm through out by a straight cable. Area of steel provided is 1650 mm². The beam is subjected to live load of value 20 kN/m. Calculate loss of stress in reinforcement due to different reasons. M50 concrete is used. E=2x105 N/mm²; p = 1.6
A rectangular beam 250 mm wide, 500 mm deep is reinforced at the bottom with 4-20-mm-diameter bars and at the top with 2-16-mm bars. bottom is 70 mm. Use concrete strength f'c = 21 MPa and steel yield strength fy = 350 MPa for 20-mm bars and fy = 275 MPa for 16-mm bars. Determine the maximum steel ratio if the beam is singly Concrete cover to bar centroid at the top is 80 mm and at the reinforced in negative bending with the given material strengths and the tensile strain is limited to 0.005 upon crushing of concrete. Write the answer in 5 decimal places only.
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 1.) The depth of the concrete stress block is ____ mm.
1. The web has a width of 350 mm and the slab thickness is 100 mm. The beam has a span of l6.5 feet and spaced at 6.5 feet center to center of the beam. A reinforced concrete T-beam has an effective depth of 500 mm and has a reinforcement bar of 8 - #7 bar size at the bottom. Yield stress of steel is Fy = 280 MPa. Concrete has a strength of f c = 20.7 MPa Assume steel covering of 40 mm. a. Determine the effective width of the flange. b. Determine the depth of compres sion block. c. Determine the ultimate moment capacity of the beam.
A rectangular beam 250 mm wide, 500 mm deep is reinforced at the bottom with 4-20-mm-diameter 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 = 27 MPa and steel yield strength fy = 415 MPa for 20-mm bars and fy = 275 MPa for 16-mm bars. Determine the maximum steel ratio if the beam is singly reinforced in positive bending with the given material strengths and the tensile strain is limited to 0.004 upon crushing of concrete. Write the answer in 5 decimal places only.
SITUATION A: The floor system shown has the following applied loads. Super Imposed Dead Load = 2.00 kPa Live Load = 1.90 kPa Slab Thickness = 100.00 mm Weight of Concrete = 24 kN/m3 Self-Weight of the beam = 1.92 kN/m Material Specifications: f’c = 21.00 MPa fy = 345.00 MPa Steel Cover = 50.00 mm What is the maximum positive moment of beam BE, acting on the midspan? in kN-m What is the maximum steel ratio of the section located at the supports? What is the actual steel ratio of the beam section at the supports? What is the ultimate moment capacity of the beam at the supports? in kN-m What is the effective flange width at the midspan? in mm What is the height of the compression block of the section at midspan? in mm What is the ultimate moment capacity of the beam at the midspan? in kN-m What would be the height of the CHB that can be placed on beam BE? Assuming the weight of the blocks is 2.30 kN/m per meter height? in meters
A rectangular beam 250 mm wide, 500 mm deep is reinforced at the bottom with 4-20-mm-diameter 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 = 21 MPa and steel yield strength fy = 415 MPa for 20-mm bars and fy = 275 MPa for 16-mm bars. 1. Determine the tensile steel ratio for positive bending. 2. Determine the depth of the uniform rectangular stress block on the beam section at ultimate stage when subject to positive bending. 3. Determine the design moment capacity in kN•m of the beam in positive bending.
A rectangular beam 250 mm wide, 500 mm deep is reinforced at the bottom with 4-20-mm-diameter 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 = 21 MPa and steel yield strength fy = 350 MPa for 20-mm bars and fy = 275 MPa for 16-mm bars. 1. Determine the maximum steel ratio if the beam is singly reinforced in negative bending with the given material strengths and the tensile strain is limited to 0.004 upon crushing of concrete. Write the answer in 5 decimal places only. 2. Determine the maximum steel ratio if the beam is singly reinforced in positive bending with the given material strengths and the tensile strain is limited to 0.005 upon crushing of concrete. Write the answer in 5 decimal places only.
A 250 mm x 500 mm prestressed beam has a simple span of 6m. The beam uses stress relieved tendons with specified strength f,y 1350 MPa and an effective an effective stress in prestressed reinforcement after allowable for prestress losses fe 760 MPa. The prestressed beam is not to be grouted (unbonded) after the application of the prestress. If the area of prestress reinforcement in tension zone is Aps = 1000 mm applied 70 mm above the bottom of the beam and f'c 35 MPa, determine the safe ultimate moment capacity of the beam. (kN-m)
A reinforced concrete beam that is 375 mm wide and 500mm deep must resist a service live load moment of 250 kN-m and a service dead load moment of 150 kN-m. Use f'c-21 MPa and fy=415 MPa. The effective concrete cover is 65mm (to the centroid of reinforcements). 1. Determine the area of compression steel reinforcement (If required. Answer O if not) in mm² 2. Determine the minimum number of 25 mm diameter bars to be provided to satisfy the demand ultimate moment 3. Determine the maximum number of 25 mm diameter bars to be provided to have a tension controlled section Answer 1: 2403.21 correct answer: Answer 2: 9.00 Answer 3: 8.00