Question

The degree of kinematic indeterminacy of frame shown below is $n\times n$, where n is

• A. 16
• B. 18
• C. 22
• D. 24

Answer 1

The correct option is D 24

Here, j = 11
$r_e=3+3=6$
$D_K=3j-r_e-m"+r_r$
$r_r=\sum (m^{\prime }-1)$
m' = Members meeting at joint = 2
$\therefore r_r=2-1=1$
m" = Axially rigid members = 4
$\therefore D_K=3\times 11-6-4+1=24$