Question

discuss why their is an increase in use of steel as opposed concrete in constructions

Answer 1

Following are the reason of increase in use of steel over concrete..

* Steel has the highest Strength to Weight ratio out of all building materials that is the main and important reason that it is used over concrete.

* Concrete has 0 scrap value, hence the dismantled concrete material is of no use and on the other hand steel can be recycled and can be used as reinforcement in RCC construction..thus posses +ve scrap value..

* With the addition of passive fire protection over structural steel, it can sustain large and large temperature.

* One of the most important reason is that the steel is a ductile material and hence gives sufficient warning before failure unlike concrete..hence finds its use in seismic prone areas..