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Q: Which of the following assumptions is used for the design of an axially loaded compression member (steel)?
  • A. The ideal column is not straight and has crookedness
  • B. Secondary stresses are neglected
  • C. The modulus of elasticity is not assumed to be constant
  • D. 25% to 40% of secondary stresses are taken into account
Correct Answer: Option B - Compression Member:- • A compression member is a structural member which is straight and subjected to two equal and opposite compressive forces applied at its end. Assumption made while designing a compression member • The modulus of elasticity is assumed to be constant in built up column. • Secondary stress are neglected. • The Ideal column is assumed to be absolutely straight having no crookedness, which never occur in practice.
B. Compression Member:- • A compression member is a structural member which is straight and subjected to two equal and opposite compressive forces applied at its end. Assumption made while designing a compression member • The modulus of elasticity is assumed to be constant in built up column. • Secondary stress are neglected. • The Ideal column is assumed to be absolutely straight having no crookedness, which never occur in practice.

Explanations:

Compression Member:- • A compression member is a structural member which is straight and subjected to two equal and opposite compressive forces applied at its end. Assumption made while designing a compression member • The modulus of elasticity is assumed to be constant in built up column. • Secondary stress are neglected. • The Ideal column is assumed to be absolutely straight having no crookedness, which never occur in practice.