Question

Q.2. If f_c = X psi and V_u = V (k). Select the rectanngualr beam section for which no shear reinforcement required . Take b = ½ d                             

Vu= v (K)	X (psi)
60	4000

Please solve with all steps

Answer 1

Given:

• fc = 4000psi
• Vu= V(k) = 60 k
• b=0.5d

Solution:

Shear strength provided by concrete is,

  

But ACI Code 11.4.6.1 states that minimum area of shear reinforcement is provided if Vu exceeds .

Let us consider,   

We know that, b=0.5d.

So, take

Let us take, b = 30 inch

d = 60 inch

D = 60+3 = 63 inch.

We need rectangular beam section of (30-inch x 63-inch).