5. A doubly reinforced rectangular beam has 3 - 20 mmɸ compression bars and 6 - 28 mmɸ. The breadth and overall depth are 410 mm and 650 mm respectively. Use 10 mmɸ stirrups, 40 concrete cover, fc’ = 20.7 MPa, and fy = 345 MPa. Calculate the following (a) d
5. A doubly reinforced rectangular beam has 3 - 20 mmɸ compression bars and 6 - 28 mmɸ. The breadth and overall depth are 410 mm and 650 mm respectively. Use 10 mmɸ stirrups, 40 concrete cover, fc’ = 20.7 MPa, and fy = 345 MPa. Calculate the following (a) d
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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5. A doubly reinforced rectangular beam has 3 - 20 mmɸ compression bars and 6 - 28 mmɸ.
The breadth and overall depth are 410 mm and 650 mm respectively. Use 10 mmɸ stirrups,
40 concrete cover, fc’ = 20.7 MPa, and fy = 345 MPa. Calculate the following
(a) d
(b) As’
(c) cbalance
(d) a
(e) fs’
(f) Cc
(g) Cs
(h) Abalance
(i) check if compression steel yields (fs’ > fy)
(j) design strength of the beam ( ? Mn)
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