A 11.1 m simply supported singly reinforced beam has a width of B= 31 cm and a height H=59 cm. Concrete compressive strength, f'c=30 MPa Steel Yield Strength of longitudinal bars, fy=420 MPa, Steel Yield Strength of transverse bars, fyt = 280 MPa, Unit weight of concrete, c= 23 kN/m³. Steel cover of the beam =7 cm It is desired that the capacity of the beam to be at balanced condition. If the structural engineer wants the optimization ratio of the design moment and capacity to be 0.9, calculate the maximum value of the live load in kN/m to meet such condition Use NSCP2015

A 11.1 m simply supported singly reinforced beam has a width of B= 31 cm and a height H=59 cm. Concrete compressive strength, f'c=30 MPa Steel Yield Strength of longitudinal bars, fy=420 MPa, Steel Yield Strength of transverse bars, fyt = 280 MPa, Unit weight of concrete, c= 23 kN/m³. Steel cover of the beam =7 cm It is desired that the capacity of the beam to be at balanced condition. If the structural engineer wants the optimization ratio of the design moment and capacity to be 0.9, calculate the maximum value of the live load in kN/m to meet such condition Use NSCP2015

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 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. The concrete cover to bar centroid is 80 mm and at the bottom is 70 mm. use concrete strength f'= 21 MPa and steel yield strength fy=415 MPa for all bars. 1. Determine the tensile steel ratio when the beam is in positive bending. a. 0.01567 b. 0.01283 c. 0.01169 d. 0.01923 2. Determine the nominal moment capacity in kN-m of the beam in positive bending. a. 188.30 b.167.70 c.218.96 d.193.68 3. Determine the tensile steel ratio when the beam is in negative bending. a. 0.00406 b. 0.00475 c.0.00383 d. 0.00508 please provide a complete solution so I can understand. Very much appreciated to solve it early !!
Use f'c = 30 MPa and fy = 415 MPa. The unit weight of concrete is 24 kN/m³ . The floor of a cantilever floor system is made up of a 150mm thick concrete slab (cast monolithically with beam) and the beams have widths of 300 mm, a total depth of 560 mm, and are to be reinforced with 5-Ø28 mm bars. The center-to-center spacing of beams is 4 m. The cantilever floor system is also built using 4m cantilever reinforced beams as supports. a) Find the maximum service live load (kPa) that the current floor design can support. b) Suppose that the floor will need to carry a superimposed service dead load of 2 kPa and service live load of 7.2 kPa, will the existing floor design be adequate? If not, redesign the beams (find the appropriate number of Ø28-mm rebars and provide a final sketch). Use cc = 40 mm, stirrup diameter of 10 mm, and nominal maximum aggregate size of 20 mm.
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A 300mm x 425 rectangular beam is reinforced for tension only with 4-28mm bars. The beam has a concrete cover of 40mm and a stirrup of 10mm diameter bar. The beam carries a live load and a dead load (without its self-weight). Given that unit weight of concrete is 24kN/ cu.m f'c = 21 MPa and fy = 414 MPa, calculate the additional concentrated live load as shown in the figure.
I need to solve this question in concrete
A beam having a width of 500 mm and a total depth of 800mm is reinforced with 6-32mm dia bars Compressive strength of concrete is 28 MPa and yield strength of reinforcing bars is 420MPa. a) Maximum Steel ratiob) Tension Forcec) Compression Force