ANALYSIS AND DESIGN OF SINGLY REINFORCED CONCRETE BEAMS1. A simply supported rectangular beam has a width of 250mm and a total depth of 450mm. Itis reinforced with a total steel area of 1875mm² placed at an effective depth of 375mm. fc=27.6MPa, fy-414.7MPa. Determine the safe uniformly distributed live load that the beamcould carry in addition to a dead load of 20 KN/m (including its self-weight) if it has a spanof 6m.2. The beam has a width of 400 mm and a total depth of 500mm. It is subjected to 200 KN.m.ultimate moment. Considering an effective depth of 435 mm. fc = 20.7 MPa, fy=415 MPa.Determine the required number of D25mm due to factored moment, Mu. Provide completedetail of reinforcement of the beam.

Answered: Image /qna-images/answer/2699c166-aa6c-452c-b294-cd5f0b854a6a.jpg

Answered: 1. A simply supported rectangular beam…

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 7-meter simple beam is loaded with a varying load that varies from 0 kN/m to 40 kN/m applied at 1 m and 4 meters from the left support respectively. Compute the 6Ab/L and 6Aa/L of the beam.
Answer is 260 mm..don't solve incorrect beam is supported by a roller and a hinge at its extremities. The 2 kN/m is loaded entirely on its 4 m length while 5 kN concentrated load is positioned 2 m from the left end of this beam. If the beam is 80 mm wide, determine the minimum height of the beam if the flexural stress is not to exceed 10 MPa.
A reinforced concrete rectangular beam has a width of 315mm and an effective depth of 525mm. The beam is reinforced with six 25mm diameter tension bars. Take fy=400MPa and fc=29.50MPa. What is the maximum moment using the NSCP 2015, kN-m? What is the nominal moment capacity of the beam, kN-m?
a) Compute the depth of compression block and b) the ultimate moment capacity of the beam shown in Figure 2. Assume fy=28MPa and fy=414MPa
A square tied column 400 mm on each side is reinforced with 8 – 25 mm bars with fy = 275 MPa.Assuming fc’ = 22 MPa, determine the ultimate axial load capacity of this column.a. 2250 kN c. 2243 kNb. 2239 kN d. 2356 kN
A rectangular beam has the following properties: b = 300 mm, d = 350 mm, tension bars As = 4-28mmØ, compression bars As’ = 2-28 mmØ, d’ = 60 mm. Determine the design strength of the beam.a. 233.155 kN.m. c. 636.511 kN.m.b. 332.511 kN.m. d. 755.321 kN.m. Calculate the ultimate axial load capacity of a round spiral column having a diameter of 400 mm reinforced with 6-20 mm Ø bars having fc’ = 24 MPa and fy = 276 MPa. a. 1941.401 kN c. 1841.321 kNb. 9141.401 kN d. 8141.321 kN
A square tied column 400mm on a side carries factored dead load of 800 kN and a factored live load of 1500 kN. Using fc'=27.6 MPa, fy=415 MPa, lateral tie diameter of 10mm, clear cover of 40mm, determine the required number of 28mm diameter longitudinal bars.
A reinforced concrete beam has a width of 425mm and an effectivedepth of 900mm. The longitudinal bars at compression side are 4-25mm dia. and 2layers of 4-32mm dia. at tension side. Concrete strength f’c=27.60 MPa and fy=420.4) Calculate the Transformed moment of Inertia.5) Calculate the moment capacity of the section.6) Calculate for the safest uniform load that can carry by the beam if ihas a lengthof 10m.
A beam 281 mm wide and effective depth 511 mm carries a factored uniformly distributed load of 66 kN/m including its own weight, in addition to a concentrated factored load of 48 kN at midspan. It spans 5.06 m face to face of simple supports. It is reinforced with ρ = 0.67 ρbal for positive bending. Use f’c = 32 MPa and fy = 414 MPa. Calculate the D/C ratio in percentage (%) for the particular beam.
A rectangular beam reinforced for tension has b = 300 mm, d = 480 mm. The beam is reinforced with 7 of 25 mm bars with fc’ = 21 MPa, fy =415 MPa. If the beam is a cantilever beam 3 m long and supports a uniform dead load of 15 kN/m(including its own weight) applied along its entire length, The maximum value of the concentrated live load that can be applied at the free end is _____kN.
A 5.0 simply supported beam is supposed to carry a 2m width concrete slab on its center(unit weight of concreteis 24 kN/m3). The slab thickness is 150mm. On top of slab is a super imposed live load pressure of 14000Pa and supper imposed dead load pressure of 24000Pa. (Use NSCP 2015 Provisions) A.Determine the critical factored moment that the beam will carry. B.If critical factored moment Mu = 380 kN.m, determine the additional unfactored concentrated dead load at midspan of beam. C.If critical factored moment Mu = 400 kN.m, determine the additional service live load pressure on the slab.
Question 19 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. Determine the ultimate moment capacity in kN∙m of the beam in negative bending. 42.79 40.56 47.55 45.07

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