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A R.C beam rectangular is section $230 \times 400mm$ deep is reinforced with $3-16mm$ dia. Bars at p and $4-20mm$ dia. bars at bottom, with an effective cover of $35mm$ from the nearer face.
written 7.9 years ago by gravatar for teamques10 teamques10 ★ 65k •   modified 3.4 years ago

Calculate the strength of section is torsion when it is also subjected to an ultimate shear force of $12kN$ and ultimate bending moment of $40kNm.$ Assume M20 concrete $F_{e415}$ steel. Adopt LSM.
reinforced concrete structures theory
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written 7.9 years ago by gravatar for teamques10 teamques10 ★ 65k

$$b= 230mm $$

$D=400mm, dc = 35mm \\ D= 365mm \\ Asc = 3-16mm \phi \\ Ast = 4-20 mm ∅ \\ Md = 40 kNm \\ Vu= 12kN, M20 \space and \space Fe415 $

Tu based on compression Reinforcement

$Asc = \dfrac{(M_t-M_d)}{(f_{sc}-f_{cc} )×(d-d_c )} \\ Now, \dfrac {d_c}d=\dfrac {35}{365}=0.095$ …

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