Refer to the sample problem on Analysis of Beams Reinforced for Tension in the lesson module (b = 400 mm, d= 550 mm, 4-25 mm diameter rebars). Determine if the beam is safe using the "transformed section method" we recently discussed.
pls. refer to this problem
Refer To The Sample Problem On Analysis Of Beams Reinforced For Tension In The Lesson Module B 400 Mm D 550 Mm 4 2 1 (31.35 KiB) Viewed 40 times
Refer To The Sample Problem On Analysis Of Beams Reinforced For Tension In The Lesson Module B 400 Mm D 550 Mm 4 2 2 (25.2 KiB) Viewed 40 times
PROBLEM: For the reinforced concrete beam shown, determine the area of the steel ce inforcement for a balanced design. If so reinforced, determine the safe moment capacity of the section, f'c-20 MPa, fs = 140 MPa, n = 10 100 300 100 5:00 fc-9MPa 200 mm GOO M 80 60 144 Solution: NAS 500 mm fo - 0.45 fe fc 9 MPa 880-x 14 14x 880(9)-9x X -536 mm 5000) ( - 2000-2001 200)-As (880-x) 500(344)(2)-200x144) 10A (336) AI 5133 mm 100344) hp 880-X =14M₂ 1013 (06/
Moment capacity of concrete: MX fo B 1 M (344) (1000) 2 C 6 21332 x 10 Mc = 558 kN m Moment capacity of steel: M (880-x) fs 1 n 140 M (536X1000) S 10 21332 x 10 Ms = 558 KN mu Check: Moment capacity of steel must be equal to that of concrete for a balanced design Safe moment capacity 559 KN m 62
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