Answered: The section of a reinforced concrete…

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 62.6-kN vertical load P is applied at the corner of the square cross section of the steel compression member AB, which is free at its top A and fixed at its base B. Knowing that for the grade of steel used oy=345 MPa and E= 200 GPa, and using the allowable-stress method, determine the smallest allowable dimension d. B D 1.5 m The smallest allowable dimension dis mm.
4. Find the maximum allowable value of P for the column. The cross- sectional areas and working stresses () are shown in Figure 3. 2P FIGURE 3 Steel: A=500 mm² Qw=120 MPa Timber: A=2000 mm² Ωw =12 MPa Timber: A=8000 mm² Ωw =16 MPa
Situation #1: A reinforced concrete beam has a width of 300 mm and an overall depth of 550 mm. The beam is reinforced with five 25-mm diameter bottom bars and two 16-mm-diamter bars, both having fy = 345 MPa. Concrete strength fc' = 24 MPa. The centroid of the bars are located 65 mm from extreme concrete fibers. Unit weight of concrete = 23.5 kN/m3. The beam is simply supported over a span of 6 m and carries a superimposed deadload of 8 kN/m. Use NSCP 2010 1.1 What is the depth of compression block? 1.2 What is the stress of the compression steel? 1.3 What is the nominal capacity of the beam? 1.4 What safe uniformly distributed live load can the beam carry over its entire length? 1.5 Using the loads obtained from the previous questions, what is the required nominal shear strength of the beam at critical section near the support? 1.6 Using 10 mm U stirrups with fy = 275 MPa, what is the required stirrup spacing near the support.

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The section of a reinforced concrete T-beam has d= 500mm bf = 600mm t = 100mm bw = 300mm. The beam is reinforced with 12 pieces of 28mm diameter bars with Fy = 415 MPa. Concrete strength F'c = 28 MPa. Determine the Safe Ultimate Moment Capacity of the beam.