Analysis of Trusses

Perfect Truss (Stable Truss)

Condition: n = 2j – R

j = Number of joints

n = Number of members
R = No. of reaction components (external)

Imperfect Truss (unstable)

n ≠ 2j – R

Deffecient Truss

n < 2j - R

Redundant Truss

n > 2j – R

Table to remember:

$\table Sr.No. ,Member ,Magnitude,Nature$