PROBLEM NO. 3 A reinforced concrete beam has a width of 300 mm and an effective depth of 520mm to the centroid of tension reinforcements. The steel reinforcements will be placed in a single layer arrangement. Concrete strength f=32 MPa. Design as a singly-reinforced beam and use 2010 NSCP. 1. Determine the largest steel ratio allowed by the code for the given section if fy =345 MPa. 2. Determine the maximum steel ratio of the section if the beam is characterized as tension-controlled. Use fy = 345 MРа. 3. If fy = 415 MPa, determine the maximum number of 25mmø bars that can be used for the given section for it to be tension-controlled.
PROBLEM NO. 3 A reinforced concrete beam has a width of 300 mm and an effective depth of 520mm to the centroid of tension reinforcements. The steel reinforcements will be placed in a single layer arrangement. Concrete strength f=32 MPa. Design as a singly-reinforced beam and use 2010 NSCP. 1. Determine the largest steel ratio allowed by the code for the given section if fy =345 MPa. 2. Determine the maximum steel ratio of the section if the beam is characterized as tension-controlled. Use fy = 345 MРа. 3. If fy = 415 MPa, determine the maximum number of 25mmø bars that can be used for the given section for it to be tension-controlled.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:PROBLEM NO. 3
A reinforced concrete beam has a width of 300 mm and
an effective depth of 520mm to the centroid of tension
reinforcements. The steel reinforcements will be placed in a
single layer arrangement. Concrete strength f=32 MPa.
Design as a singly-reinforced beam and use 2010 NSCP.
1. Determine the largest steel ratio allowed by the code for
the given section if fy =345 MPa.
2. Determine the maximum steel ratio of the section if the
beam is characterized as tension-controlled. Use fy = 345
MPa.
3. If fy = 415 MPa, determine the maximum number of
25mmøbars that can be used for the given section for it
to be tension-controlled.
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