Important Facts about 500D TMT Bar
The Indian subcontinent has a past filled with pulverizing seismic tremors. The real purpose behind the high recurrence and power of the tremors is that the Indian plate is crashing into Asia at a rate of around 47 mm/year. Geological insights of India demonstrate that just about 54% of the land is defenseless against quakes.
As per IS 1893 (Part 1) 2002 doles out Five levels of seismicity for India as far as zone factors.
Zone 5
Highest probable earthquake areas come under Zone 5 which includes
| Kashmir Region | Western and Central Himalayas | North and Middle Bihar |
| Rann of Kutch | North-East Indian region | Andaman and Nicobar group of Islands |
Zone 4
Zone 4 considered as High Damage Risk Zone. Areas include under this zone are
| Jammu and Kashmir | Himachal Pradesh | Uttarakhand | Sikkim |
| Chandigarh, North Punjab | Western Uttar Pradesh | North Bengal | Sundarbans |
| Delhi | Patan Area in Maharastra | Bihar the northern part of the state like Raxaul | Near the border of India and Nepal |
Zone 3
This zone identifies as Moderate Damage Risk Zone.
Zone 2
Zone 2 is marked as Low Damage Risk Zones.
Zone 1
India being earthquake hazard zones no areas are marked under Zone 1
As per National Centre for Seismology West Bengal marked as a high seismic zone. Therefore it’s very important to choose the right TMT bar for any construction work.
There is three kind of TMT bar which is been used when it comes to any construction work. Differences between each of these are:
Highest probable earthquake areas come under Zone 5 which includes
| Fe 500D | Moderately High Strength with High Flexibility /Elongation |
| Fe 550D | Higher Strength with Low Flexibility/Elongation |
| Fe 600D | Even Higher Strength with Very Low Flexibility/Elongation |
Fe denotes “Iron” and Re-bars Fe 500D is a special grade of TMT Re-bars manufacture under specific process conditions resulting in increased strength as compared to Fe 415D grade TMT Re-bars.
Fe 500D Re-bars are ideal for applications in heavy load RCC structures like flyovers, dams, bridges and other critical structures where high yield load (design load) is required without compromising on the ductility.
Hence, Fe 500D considered as the best TMT because it provides the right mix of strength and flexibility.