Question

For a redundant frame the number of members (n) and the number of joints (j) are related as

• A. n=2j
• B. n<2j-3
• C. n=2j-3
• D. n>2j-3

Answer 1

Answer:

D. n>2j-3

A perfect frame has n = 2j - 3 , where n is the number of members and j is the number of joints. If m < 2j - 3 , the frame is deficient and if m > 2j - 3 the frame is redundant. In a redundant frame, the number of members is greater than 2j-3