How to build a strong Column for your home
Consider the momentous event in architecture when the wall parted and the column became! – Louis Kahn
The History
of Column Construction for Homes
The column is a reasonable point-level singular structure that is developed to support a load. It is for this reason; that it is one of the most critical frameworks for any home. Over the years columns were developed using a single block of rock carved out into a single diameter base point. This ensures the durability and structural integrity of the homes. However, with the dawn of the last half of the past millennia, a major shift was seen in column construction, with users and organizations shifting from a single piece of chunk column to concrete columns. With the introduction of the concrete column, a sharp rise in TMT bars and iron rod usage was seen all across the globe and the same inference stands for India as well.
A Shift in
Column Construction Dynamics
One of the major reasons behind this dynamic shift was completely based on the fact, that single rocks carved columns were extremely difficult to make and the process required a huge number of people due to the large amount of weight the columns had. Besides this reason, over a period of time, the rock carved columns would also trap moisture due to the porous nature of a single large piece of rock which is usually found in nature, this not only affected the columns by allowing them to crack from inside out but would also result in the development of damps on the walls developed around it. This directly affected not only the integrity of the column structure and its surroundings but also the integrity of the entire building. As a result, the moving trend toward concrete or cementitious columns came into existence.
The New Era
of Column Construction and Discoveries
However, the journey to create stronger and long-lasting columns was still a complex process despite this change. One of the major reasons behind this is finding the right TMT bars that would support the weight of the column, without exerting huge pressure on the surrounding walls and the ground it was raised on. Through the transverse of experimentation in the past 50 years, many variants of TMT bars ranging between 12mm and 25mm have been tested and tried for column creation. However, with a modular structure of columns where 4 - 40 TMT bars are tied in a loop, lightweight is the most important criterion for column creation. It is because of this reason, the 12mm bars were found to be the ideal solution for column creation. The internal findings thus, reflected an individual 12mm TMT bar weight to be 0.890 kg/m. Thus, the development of a strong column for a home to weigh around a minimum of 3.56 kg/m for an individual column’s TMT structure!
The
Challenges in the New Era of Column Construction
With the
knowledge gathered from this tested and tried method of different TMT bars multiple arrays of approaches were
made to ensure perfection using 12mm TMT bars.
However, despite these efforts, many a time columns failed to meet the desired
quality. The main reason behind this was the poor quality of TMT bars, which were either overweight or made
up of scrap iron that easily cracked under pressure, corroded away in time, or
get rusting. Hence it was extremely important to identify TMT bar manufacturers who would supply the top TMT bars in India.
That is why in this segment of our article we have accumulated information about TMT that makes them the best in the nation. Let’s walk you through the different factors that contribute towards manufacturing top TMT bars in India, directly contributing towards the building of strong columns for your home.
Different
Factors of TMT that helps in the Construction of Strong Columns
Raw Material of TMT
The Best
Quality TMT bars in India are
manufactured from Virgin Iron Ore. It is because Virgin
Iron Ore is the source of raw material for producing top TMT bars in India. On the other hand, TMTs manufactured from
scrap or reused iron are of poor quality and end up developing rust, and
cracks, while being vulnerable to corrosion. This directly impacts the strength
and longevity of the column construction. Hence, the Best TMT bar manufacturers in India
always prefer to use Virgin Iron ore to produce TMT bars.
Process of Manufacturing TMT
The manufacturing
process is one of the most critical factors in developing good-quality TMT bars. It is because the
manufacturing process determines the strength and flexibility of the TMTs. That
is why the best TMT bar manufacturers in India
use a controlled process and the latest Thermex technology to manufacture TMT bars. This, in turn, provides the TMTs with increased
strength, while reducing impurities. Further with the use of the latest
technology the TMT bars can achieve
better ductility, and improved ability to absorb energy. Allowing the column
structures constructed using TMTs to be more resistant to natural hazards like
earthquakes.
The Grade of the TMT Manufactured
In India,
many different grades of TMT bars are presently available in the market. This
varies between Lower Grades to Higher Grades. These grades of the TMT Steel
determine the elongation of the bars. According to Indian Standard Deformed
Steel Bars and Wires for Concrete Reinforcement Institute (IS: 1786/2008);
lower grades TMT Bars have Lower
Strength and High Flexibility whereas higher grades TMT Bar have Higher Strength & Lower Flexibility. That is why
the top TMT bars in India are
manufactured keeping in mind that the TMT
bar provides the right balance of flexibility and strength when you plan to
use TMT for construction. As per research conducted by "Indian Standard
Deformed Steel Bars and Wires for Concrete Reinforcement Institute" under
(Indian Standard code 1786 & 2008); a TMT
bar that maintains the right balance of flexibility and strength, signifies
the minimum yield stress in MPa (tensile strength), and better elongation.
Further, these top-quality TMT bars provide
extreme weldability, ductility, and bendability which are far superior to all
other TMT bars in India. Thus, facilitating the
construction of strong columns for your home!
The Design of the Ribs in TMT
The design of the TMT Ribs plays a crucial role in providing a strong
anchorage sheath between the TMT and the cementitious material. Thus, allowing
the concrete formed with the help of the TMT ribs to have a better grip. This
in turn improves the stability of the columns by a huge margin, when compared
with poorly ribbed TMTs, which often end up getting badly damaged during
natural calamities like earthquakes, cyclones, etc. That is why the best TMT bars in India
select TMT ribs that are approved by “IS 1786”. It is because these approved
ribs have been designed keeping in mind natural calamities that may affect the
integrity of the building. Since India falls under a high seismic zone with a
devastating history of earthquakes “IS 1786” approved ribs are a must when
planning to use TMTs for column construction purposes.
Corrosion
Resistance
TMT bars are the pivotal component of columns that defines the integrity of the
constructed structure. That is why it is important to select TMT bars that are resistant to
corrosion. It is because TMT bars
are often exposed to moisture, rainfall, and other weather conditions over a
long period of time. This exposure can result in corrosion of the TMT’s steel,
which can directly affect the integrity of the columns, by making them weak
from the inside. Hence the Best TMT Bars in West Bengal are produced keeping in mind the TMTs are resistant to corrosion.
This can also help in supporting columns even in places with heavy rainfall and
places prone to flood besides earthquakes.
Ductility
Before
purchasing TMT, it is of prime importance to check the ductility of the TMT bars. The ductility reflects the
elongation capacity of the TMT bar,
which indicates the ability of the TMT
bars to be elongated or stretched using external force without impacting
the integrity of the bar. Hence the top
TMT bar in India ensures that the TMT produced has better elongation
capacity/ductility ensuring stronger column construction for homes.
Weldability
TMT bars are often
required to be cut, reshaped, and welded into places based on column designs.
Hence it is important to have TMT steel that allows an easy welding process.
Further, if the TMTs are not manufactured under properly controlled
thermomechanical treatment they end up requiring pre and post-welding
treatment. This, in turn, increases the cost of the TMT bars. Hence the top TMT bar in India provides
easy weldability to ensure stronger and sound column construction.
These are
some of the major factors that consumers should always keep in mind when
planning to purchase TMT bars for
the construction of strong columns for their homes.
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