A 300 mm X 500 mm exterior beam is reinforced with 25 mm main bars and 12 mm stirrups. The tension side has a steel area of 2450 mm² and the compression side has a steel area of 1480 mm². 60% of the tension steel area is laid out on the first layer, the remaining is on the second layer and the compression steels are on a single layer. Determine the following if the steel yield strength of the compression steel is 276 MPa, the steel yield strength of the tension steel is 415 MPa and the depth of the tension zone 340 mm: a. The compressive stress in the concrete.

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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A 300 mm X 500 mm exterior beam is reinforced with 25 mm main
bars and 12 mm stirrups. The tension side has a steel area of 2450
mm² and the compression side has a steel area of 1480 mm². 60%
of the tension steel area is laid out on the first layer, the remaining is
on the second layer and the compression steels are on a single
layer. Determine the following if the steel yield strength of the
compression steel is 276 MPa, the steel yield strength of the tension
steel is 415 MPa and the depth of the tension zone 340 mm:
a. The compressive stress in the concrete.
b. The net tensile stress.
c. Ultimate Moment Capacity of the beam.
Transcribed Image Text:A 300 mm X 500 mm exterior beam is reinforced with 25 mm main bars and 12 mm stirrups. The tension side has a steel area of 2450 mm² and the compression side has a steel area of 1480 mm². 60% of the tension steel area is laid out on the first layer, the remaining is on the second layer and the compression steels are on a single layer. Determine the following if the steel yield strength of the compression steel is 276 MPa, the steel yield strength of the tension steel is 415 MPa and the depth of the tension zone 340 mm: a. The compressive stress in the concrete. b. The net tensile stress. c. Ultimate Moment Capacity of the beam.
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