Use NSCP 2015. Problems: 1.) A floor system consists of a 100mm concrete slab supported by continuous T-beams with 9 m spans, 1.2m o.c. Web dimensions, as determined by negative-moment requirements, are bw 280 mm, and d = 500 mm. Concrete cover is 70mm from the centroid of the bars. The beam is subjected to a maximum positive factored moment of 1080 kN-m. Use f'c 21 MPa and fy = 415 MPa. Calculate the required tension steel area at the point of maximum positive moment.

Use NSCP 2015. Problems: 1.) A floor system consists of a 100mm concrete slab supported by continuous T-beams with 9 m spans, 1.2m o.c. Web dimensions, as determined by negative-moment requirements, are bw 280 mm, and d = 500 mm. Concrete cover is 70mm from the centroid of the bars. The beam is subjected to a maximum positive factored moment of 1080 kN-m. Use f'c 21 MPa and fy = 415 MPa. Calculate the required tension steel area at the point of maximum positive moment.

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

A pre-tensioned beam 160 mm wide and 320 mm deep is prestressed by four plain wires of 7 diameter at an eccentricity of 100 mm. If the cube strength of concrete at transfer is 40 N/mm2. Estimate the transmission length at the ends of the pretensioned member using IS: 1343 code provisions.
USE NSCP 2010 A simply supported one way reinforced concrete floor slab has a spanof 3 m. It carries a service live load of 8.4 kPa and a service dead loadof 1.2 kPa. fc’ = 20.7 MPa, fy = 414.6 MPa. Use steel covering of 25 mmmeasure from center of bars. Calculate the spacing of the 12 mm øshrinkage and temperature bars for minimum thickness of slab.
Situation. A flooring system consists of parallel I-beam sections spaced at 3 m. on centers simply supported over a span of 9 m. The beam supports a 200 mm thick concrete slab of ultimate strength f'c = 21 MPa. The flooring system is designed for as ceiling and floor load of 750 N/m². The properties of the I-beam sections are: A = 11,500 mm² d = 350 mm; tw = 10 mm bf = 250 mm; t = 16 mm lx = 266x106 mm4 ly = 45 x 106 mm4 fy = 248 MPal Wb = 90 kg/m fy = 248MPa If each beam is laterally braced by the concrete slab, calculate the allowable bending strength using safety factor of 1.67. Select the correct response: 175.17 248.79 235.94 394.03
A flooring system consist of I-beam sections spaced at 3 m(center to center) and with simple spans of 6 m. The beams support a 200 mm thick slab. The flooring system is designed for a live load of 2400 N/m² as well as ceiling load of 750 N/m². The properties of the I-beam sections are : d = 352 mm, weight of beam = 440 N/m, moment of inertia , Ix = 0.0012 m⁴. Consider Fy = 248 MPa, E = 200000 MPa and wt. of concrete of 24 kN/m³. 1. Which of the following most nearly gives the uniform pressure acting on the slab? a. 6.2 kPa b. 7.95 kPa c. 5.2 kPa d. 6.10 kPa 2. Which of the following most nearly gives the total uniform load on the beam in kN/m? a. 19.71 kN/m b. 17.82 kN/m c. 24.29 kN/m d. 28.14 kN/m 3. Which of the following most nearly gives the initial stress on the beam due to deadload only assuming no shoring during construction? a. 12.1 MPa b. 8.91 MPa c. 10.4 MPa…
Situation. A flooring system consists of parallel I-beam sections spaced at 3 m. on centers simply supported over a span of 9 m. The beam supports a 200 mm thick concrete slab of ultimate strength fc = 21 MPa. The flooring system is designed for as ceiling and floor load of 750 N/m². The properties of the I-beam sections are: A = 11,500 mm² d = 350 mm; tw = 10 mm bf = 250 mm; t+= 16 mm lx = 266x106 mm4 ly = 45 x 106 mm4 fy = 248 MPa Wp = 90 kg/m. fy = 248MPa Calculate the service floor live load (kPa) each beam can sustain under LRFD method using a resistance factor of 0.90. Select the correct response: 221 1.92 7.05 2.92
Situation. A flooring system consists of parallel I-beam sections spaced at 3 m. on centers simply supported over a span of 9 m. The beam supports a 200 mm thick concrete slab of ultima strength fc = 21 MPa. The flooring system is designed for as ceiling and floor load of 750 N/m². The properties of the I-beam sections are: A = 11,500 mm² d = 350 mm; tw = 10 mm bf = 250 mm; t+= 16 mm lx = 266x105 mm4 ly = 45 x 105 mm4 fy = 248 MPa Wb = 90 kg/m fy = 248MPa Calculate the service floor live load (kPa) each beam can sustain in bending under allowable stress design method. Select the correct response: 7.05 2.91 C CUN 2.21 1.92
An exterior beam of a floor system having an effective depth of 600mm has a web thickness of 300 mm. The beam has a spacing of 2.4 m on centers. Thickness of the slab is 100 mm. a. Determine the effective with of the flange of the end beam or L-beam having a span of 6 m,b. Determine the effective with of the flange of the T-beam.
0211 A reinforced concrete one way slab is built integrally with support, consist of two equal spans as shown in Figure. Design the slab to carry service live load 4.8kN/m² and service dead load of 5.75 kN/m². Assume: fe 28 MPa and fy = 420 MPa and y=24kN/m². 1-Estimate the slab thickness using limitations of ACI-318M 2- Use the ACI-318M moment coefficients to determine the design moments at critical sections of the slab. 3-. Design the first panel at exterior sport only. 4-Find the load transfer to supporting interior beam. M 6m Fig.2 0.3m+ -4.5m- 11 11 -0.3m -4.5m- +0.3m
A concrete one-way slab has a total thickness of 100mm.The slab will be reinforced with 10 mm diameter reinforcing steel bars with fy = 278 MPa. Concrete Strength fc = 23 MPa. Determine the required spacing of 12 mm RSB if the total factored moment acting on 1-meter width of slab is 10 kN-m. Clear cover is 25mm. Reduction factor is 0.9.
1. A floor system consist of a 100mm concrete slab supported by continuous T-beam with a 9m span, clear distance between webs of 1.2m. Web dimensions are bw = 300mm, effective depth d = 540mm, concrete cover is 700 from the centroid of the bars is subjected to a maximum positive factored moment of 1000KN m. use f'c = 28MPa, fy= 420MPa uniform weight of concrete is 23.544KN-m a. What is the effective flange of the beam b. Should the T-beam be singly or doubly reinforced use et = 0.005 c. What is the required tension steel area d. What is the uniform live load of the beam, assume dead load is self-weight only A w
b) The floor system shown is subjected to a total uniform distributed load of 20 kN/m². Sketch the loading that acts along the members and CDE. 2 m E 3 m F G H 4 m 3 m
III. A simply-supported rectangular concrete beam with a width of 300mm wide, 600 mm total depth, and 5.8 m long, is needed to accommodate both ceiling height clearance below and the superimposed loads. If f' = 28 Mpa and steel 415 Mpa, fy = 13) what is the allowable resisting moment of the beam without 300 mm stressing the concrete beyond 0.45f"c and steel 0.60f,? Use the transformed area method and rn 8 65 mm 2 #25mm 535 mm 600 mm 14) what is the allowable resisting moment of the beam using the strength design method. 4 #32 mm 65 mm 15) Compare the results of (a) and (b) and comment your observation.