In this article, we will describe the perfect truss, imperfect or deficient truss, and redundant truss.
First, let’s know what is Truss.
A Truss is a structure consisting of straight Slender Rods connected only at their joint.
Slender Rod – If the diameter of rods is smaller compared to its length then this type of rod is called a slender rod.
These Slender Rods called a member. These members are connected together to form triangular shapes.
Table of Contents
Perfect Truss:
A Truss is said to be a Perfect Truss if it fulfills the below condition.
m=2j-3
Where
m= number of members
j= number of joints
Perfect Truss does not collapse under loading. This type of truss has enough members to resist the applied load without deformation.
A simple triangular perfect is given in the below image.
Imperfect or Deficient Truss:
If a given member in the structure is less than the required member then it is called an imperfect or deficient truss.
The condition of Deficient Truss is,
m<2j-3
Where
m= number of members
j= number of joints
Deficient Truss collapse when we apply load on it.
Redundant Truss:
A Truss is said to be Redundant if has more members than required.
The equation for Redundant Truss are as follows
m>2j-3
Where
m= number of members
J= number of joints
Redundant Truss does not collapse when we apply load on it.
If you have any thoughts on perfect, Imperfect, and Redundant Truss, please let me know.
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