BRAE433 Lecture Ch 3

BRAE433 Lecture Ch 3 - 1 RC Design Ch 3 – Reinforced...

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Unformatted text preview: 1 RC Design Ch 3 – Reinforced Concrete Beams: T-Beams. ITRC Cal Poly Beams: T Beams. BRAE/ITRC Cal Poly T-Beam Bridge - RC design circa 1915 in San Antonio 2 BRAE/ITRC Cal Poly T-Beam Analysis • Effective flange width “b” is less BRAE/ITRC Cal Poly than or equal to the beam spacing • h f – slab thickness • b w – beam width 3 T-Beam Analysis • Effective flange width “b” must not exceed – ¼ of the span length Flange Web BRAE/ITRC Cal Poly – b w + 16 h f – Center to Center spacing of the beams Smallest of the 3 values control… T-Beam Analysis • A s,min evaluation with tension in web BRAE/ITRC Cal Poly (same as Rectangular Beam) 4 T-Beam Analysis Tensile Force N • Tensile Force, N T • Since the Flange area is so large, the moment strength will be limited by the steel: BRAE/ITRC Cal Poly N T = A s x f y T-Beam • Compressive force, N C – In Flange ( N Cf ) – In Web ( N Cw ) – N C be just in flange, then it is a simple rectangular beam evaluation… BRAE/ITRC Cal Poly Rectangular T-Beam – True T-Beam, N C extends to web… 5...
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This note was uploaded on 01/13/2011 for the course BRAE 433 taught by Professor Styles during the Fall '10 term at Cal Poly.

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BRAE433 Lecture Ch 3 - 1 RC Design Ch 3 – Reinforced...

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