38 The cantilever method for the approximate lateral load analysis of tall unbra

Question

38 The cantilever method for the approximate lateral load analysis of tall unbraced building frames is based on the assumptions that I. points of inflection occur at the mid height of columns IL points of inflection occur at the midspan of girders III a column's axial force varies in direct proportion with its distance from the neutral avis of its story IV. a column's shear varies in direct proportion with its distance from the neutral axis of its story O (A) l and 11 only O (B) II and IV only O (C) I,L and 1 only (D) l, ll,111, and IV

Explanation / Answer

The cantilever method was described by A. C. Wilson. It is used to approximately determine the effect of lateral forces experienced by tall buildings. The cantilever method uses the assumption that a tall building with a horizontal load such as wind will behave like a cantilevered beam.

Now, the assumptions made in this method is that, the inflection points are located at the middle of each beam and column in the structure, and the axial forces experienced by the columns on each level of the building will be proportional to the distance from the centroid of that level. This method doesn't considers any assumption about Shear stress of column.

Hence, Statements I, II & III are correct. The correct answer would be, Option "C".

Related Questions

Navigate

• Browse (All)
• Browse 3
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.