Vigas - Flexão Simples - Balanço 3

\FLEXÃO SIMPLES - Viga em Balanço

Neste exemplo, será dimensionada a armadura longitudinal e transversal de uma viga submetida a Flexão Simples utilizando como base a Norma Cirsoc-2005, conforme dados abaixo:

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Concreto: H-25 / Aço: ADN420

bw: 20 cm / h: 60 cm

Mu-:

TQS = 20,2 kN.mSoftware B = 15,5 kN.mSoftware C = 16,5 kN.m

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Flexão:


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TQS = 1,26 cm²Software B = 0,95 cm²Software C = 3,84 cm²

1,57 cm² ≥ 1,26 cm² → OK!!

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øMn (33,31 KN.m) ≥ Mu (20,20 KN.m) → OK!!

Cortante:

TQSSoftware BSoftware C
Vu = 1,34 tVu = 1,34 tVu = 1,36 t
Vu,design = 1,34 tVu,design = 1,10 tVu,design = 1,10 t

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Ø0,75 → øVn ≥ Vu → 1,34 ≥ 1,34 → OK!!

Área de Aço:

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Espaçamento:

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Øt = 6 mm → Av = 2,00 cm²/m → ø6 c/ 28 cm

    øVn (10,66 t) ≥ Vu (1,34 t) → OK!!


    Vigas - Flexão Simples - Balanço 2
    Vigas - Flexão Simples - Viga Continua 1