SSC JE Civil Engineering 2012 Solved Paper

Question : 129 of 200

Marks: +1, -0

For a pin jointed plane structure to be statically determinate, the necessary condition is, where,
m = number of unknown member force
r = number of unknown reaction
j = number of joints

m + r = 2j
3m + r = 2j
m + r = 3j
m + 2r = 3j

Validate

Solution:

For a pin jointed plane structure to be statically determinate, when

D_S = 0

Structure to be statically determinate if, m + r = 2j

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