Consider the following statements:
1. An indeterminate structure is not economical from the material stand-point in comparison to a determinate structure.
2. If 'n' redundants in a statically indeterminate structure of 'n' degree indeterminacy are removed, the structure will
become statically determinate but unstable.
3. In the rigid frame analysis, the axial effects are ignored as their influence is negligibly small compared to bending and
shear effects.
Which of these statements is/are correct?
In case of determinate structures, reactions are more
⇒ greater sections are required, Uneconomical Indeterminate structures
⇒ Lesser forces, reactions, deflections and Economical
∴ Statement 1 is wrong.
If Ds = 0, structure is not necessarly unstable
If Ds = (-)ve, we consider it unstable
∴ Statement 2 is wrong
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