Design of Beams MCQ with answer and solution

Concept

Indian standard rolled sections

Step-by-step solution

1. Indian Standard sections: ISLB (light), ISMB (medium), ISWB (wide flange) and ISHB (heavy beam, mainly for columns). 2. For the same depth, ISHB has the greatest thickness and mass per metre.

Explanation

ISHB sections are heavy-weight beam sections with thick flanges and webs, used as columns. For the same depth they weigh more than ISMB, ISLB or ISWB sections.

Shortcut

L < M < W < H in weight for same depth (Light, Medium, Wide, Heavy).

Common mistake

Choosing ISWB because of its wider flange.