Types of deficient truss

Discussion

• Roshani   -Posted on 27 Apr 17
  no of joints = 4
  no of members (m) = 4
  no of reactions = 3
  2j-r = 2*4-3 = 5
  so, m < 2j-r
  Thus, deficient truss.
  
• Mathankumar   -Posted on 08 Jul 16
  How to got solution for (2 * 4 ) - 3 = 9........?
  
• Sravanthi   -Posted on 16 Dec 15
  - In diagram shown above, the number of joints (j) are 4.
  
  - Number of members (n) are 6 and the reaction components are 3.
  
  - The condition for redundant truss is n > 2j – R
  
  Here, 6 less than 9. Hence , the condition is not satisfied.
  
  - The condition for deficient truss is n < 2j – R
  
  here 6 < (2 x 4) - 3
  
  6 < 9
  
  For deficient truss, the condition is satisfied. Hence it is a deficient truss.

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