Question

What is the ordinate of influence line at B for reaction $R_D$ in figure below?

• A. 0.2
• B. 0.4
• C. Zero
• D. 0.5

Answer 1

The correct option is D 0.5

Applying Muller Breslau principle, we get ILD for reaction $R_D$.




From similar triangles BFC and DEC, we get

$\frac{BF}{BC}=\frac{DE}{DC}$

$\frac{BF}{2}=\frac{1}{4}$

BF = 0.5