Correct option is C
These beams come in various types, distinguished by their shape and the distribution of material in the flanges and web. The different types of I-sections are designed to cater to different load requirements.
Types of I-Sections:
ISMB (Indian Standard Medium Weight Beam): These are medium weight I-sections and are commonly used in general construction.
ISLB (Indian Standard Light Weight Beam): These are lighter I-sections used when less load-bearing capacity is required.
ISHB (Indian Standard Heavy Weight Beam): These are the heaviest I-sections, designed for maximum load-bearing capacity. They have thicker flanges and webs compared to ISMB and ISLB sections.
ISWB (Indian Standard Wide Flange Beam): These beams have wider flanges and are typically used in applications where a wider section is beneficial, but they are not necessarily the heaviest for a given depth.
