24

STRUCTURAL STEEL WORKS

24.1 INTRODUCTION

Steel is used in large extent in different forms in buildings. The materials generally used for structural purposes are cast iron, wrought iron and steel. As cast iron can withstand only compression, it is used limitedly. Wrought iron could resist tensile stresses. But mild steel can withstand both. Hence, it has replaced cast iron and wrought iron almost completely.

Various types of sections and shapes are used in building works. Most of the sections are made by rolling. Different types of sections are combined and as a unit is called built-up section, which is used in building work.

Mild steel in combination with cement forms the versatile material, the reinforced cement concrete (RCC). Apart from ...

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