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Civil Engineering QUESTION #6643
Question 1
For a beam with $b=12$ in, $d=20$ in, and $f'_c=4000$ psi, what is the nominal shear strength provided by concrete ($V_c$) using the simplified ACI formula?
  • 20,000 lbs
  • 30,357 lbs✔️
  • 45,200 lbs
  • 15,180 lbs
Correct Answer Explanation
$V_c = 2\lambda\sqrt{f'_c}b_w d = 2 \times 1 \times \sqrt{4000} \times 12 \times 20 \approx 2 \times 63.25 \times 240 = 30,360$ lbs.