Wooden structures are lightweight, energy efficient, versatile and sustainable solutions. In Earthquake prone areas wooden structures have the advantage that the wooden framed building won’t break off easily. They are flexible, economical and more versatile compared to concrete structures. Availability of cheap wood, flexibility, and aesthetics were the major factors that induced people towards wooden structures.But the case is different for cyclone-prone coastal areas. Although the vulnerability of a structure to a cyclone is circumscribed by its siting, the possibility that a cyclone will occur, and the extent to which its edifices can be damaged by it, concrete structures are always preferred than wooden ones. Concrete buildings, although ordinarily more expensive than wood frame structures, are totally worth it in the long term.
Engineers build leaving a wide berth of safe loading capacity to construct, let’s get a brief view on how the same is for steel reinforcement bars. We have talked enormously on safety codes listed in IS 1786:2008, in the manufacture of reinforcement bars. Now, let’s discuss how safe loads are calculated in a construction material like reinforcement bars. The min. yield strength a reinforcement bar should have is easily inferred from the grade of the reinforcement purchased. Grade Fe 415 having a min. yield strength of 415 N/mm2, similarly for grade Fe 500 having min. yield strength of 500 N/mm2 and Fe 550 with min. yield strength of 550 N/mm2, so goes for every steel reinforcement grade.
Part-I of this blog explained the current reinforcement steel trend in India, the TMT steel reinforced bar, the different grades and which grades are preferred. It also explained the most important factor of TMT steel bar which is Ductility. How is it compromised for higher strength. In this blog, the shift towards value-added reinforced steel is explained
Reinforced steel bars or rebars has become the preferred standard for construction of building structures, bridges and many other commercial structures. The most popular among them is the Thermo Mechanically Treated ( TMT) reinforced bars. About 35% of the total steel production in the country was accounted by the reinforced steel industry. Usage of high strength TMT steel rebars has ensured rapid growth within the construction sector.