Jul. 08, 2024
by ARS Steel
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The selection of appropriate materials in the construction industry plays a pivotal role in the structure&#;s strength and durability in the long run. Various materials are used to construct structures. One of the most essential elements among them is Rebar. In this article, we&#;ll delve into understanding what is rebar, its importance, types, and uses in the construction industry.
Rebar, also referred to as steel reinforcement bar , serves the primary purpose of reinforcing structures. In construction, where concrete is essential, these bars enhance the tensile strength of concrete, addressing its inherent weakness in tension. This reinforcement effectively strengthens structures, ensuring durability. Steel is exclusively employed as a rebar or steel reinforcement bar as it expands with heat that closely matches the concrete.
The construction industry consists of various rebar types, and each is designed for various applications according to their different properties, some of the common types are as follows:
Mild steel is made from a combination of iron and carbon. It is known for its ability to easily change its shape, due to its ease of cutting and bending, without sustaining damage. Mild steel bars are suitable for making lightweight structures as opposed to heavy structures as their bonding between concrete and steel is not strong enough.
Deformed steel bars are known to have superior bonding strength when compared to mild steel bars as the deformed steel bars have lugs and indentations on the outer surface. This enhanced bond is attributed to the improved grip on concrete, resulting in significantly higher tensile properties.
TMT (Thermo-Mechanically Treated) rebars have been recognized for providing exceptional strength and resilience to structures in the construction industry. These bars are manufactured through a process called the Thermax process which makes the bars have a tough outer surface and a softer inner core which in turn provides strength along with increased flexibility, making it suitable for diverse construction projects.
TMT rebar is an essential part of constructing structures due to its varied benefits, such as:
TMT bars are majorly used in the construction of structures such as beams and slabs which are essential components of a building framework.
HSD (High Strength Deformed) bars are known for their tensile strength in the construction industry. These bars are manufactured at a hot temperature and later these are coldly twisted to give their shape. HYSD bars are used in varied areas of construction such as roads, buildings, highways, bridges, etc.
As we know concrete is brittle in nature and has high compressive strength, it tends to crack when subjected to such forces. By embedding rebar within the concrete, the tensile strength of the structure is significantly enhanced, the reinforcement of these rebars helps prevent cracks and ensures the overall stability of the building.
Rebars or reinforcing bars are an essential element in the construction of structures as they provide the necessary strength and enhanced durability to the structures against external forces. The use of rebars is a fundamental element that contributes immensely to the safety, stability, and longevity of structures.
Choosing the appropriate rebar for construction is crucial in deciding the durability and strength of the structures. TMT steel bars are among the best rebar that is available in the construction industry.
ARS Steel is among the top TMT steel manufacturers in India. You can check out the website to learn more about TMT bars and their uses in construction industry.
No matter what type of construction project you are considering, the chances are that you will need rebar or reinforcement mesh products to provide tensile strength to any poured concrete or slab elements of your build.
While concrete itself has high compressive strength, it is relatively weak when it comes to tension, and that&#;s where rebar products come in - since steel and concrete have very similar thermal coefficients, they make the perfect partners in construction projects, to produce slabs and masonry components that are strong, sound and long-lasting.
It&#;s important to understand how different types and weights of rebar influence the tensile strength of the concrete elements used.
Most rebar products are made from mild steel, and the quality of that steel is governed by British standards and regulations. For loose rebar, the relevant standard is and for steel mesh products, the standard is BS : Steel fabric for the reinforcement of concrete.
Rebar steel is made of iron, with very small amounts of carbon, manganese, phosphorous, and sulphur also included. The carbon element is what gives rebar its overall quality and tensile strength. Mild cold-pressed steel typically has a carbon content of around 0.25%, whereas higher-grade hot-rolled steel will have a carbon content closer to 0.40%.
As well as the material composition of rebar, its overall weight per linear metre is also influenced by its diameter and by the surface deformation, or patterning, on the particular type of rebar length or mesh sheet.
By surface deformation, we mean that the outer surface of the rebar has been worked into a specific pattern to provide better contact with the poured concrete, thereby increasing the overall structural strength of the slab or concrete form.
The patterning on a particular type of rebar may not make a material difference to its overall tensile strength when compared with other patterns. Still, it could make a difference to the weight of each length, so it is important to calculate weights accurately.
The table below indicates the weights of the most common types and diameters of rebar, to highlight how much these vary for different projects.
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Rebar DiameterWeight in Kg/mWeight in Kg/ft6mm0.222 Kg/m0.068 Kg/ft8mm0.395 Kg/m0.120 Kg/ft10mm0.62 Kg/m0.189 Kg/ft12mm0.89 Kg/m0.271 Kg/ft14mm1.21 Kg/m0.369 Kg/ft16mm1.58 Kg/m0.482 Kg/ft18mm2 Kg/m0.610 Kg/ft20mm2.47 Kg/m0.753 Kg/ft22mm2.98 Kg/m0.908 Kg/ft25mm3.85 Kg/m1.173 Kg/ft28mm4.83 Kg/m1.472 Kg/ft32mm6.31 Kg/m1.923 Kg/ft40mm9.87 Kg/m3.008 Kg/ftOf course, if you need any guidance or advice on the right rebar or mesh products for your next construction project, just get in touch with us today for a chat with a member of our friendly and experienced team.
The easiest weight calculator you can use to establish your reinforcing bar weight is to measure per linear foot or metre. The weight ranges from 0.222kg per metre (0.068Kg per foot) for 6mm rebar, to 9.87Kg per metre (3.008Kg per foot) for 40mm rebar.
Trying to calculate rebar weight can be quite tricky, especially for those of us without a master's in mathematics!
However, it is crucial. Otherwise, your construction project could come under significant jeopardy.
Fortunately, there is a simple equation you can use that will solve any issues you might have!
W= (D2/162.28)* L
&#;D&#; stands for diameter, and &#;L&#; stands for length. Using this equation, you establish the diameter in millimetres and the length in metres. The result you get is in kilograms and will help you establish the weight of your rebar.
For a breakdown of the weight of your rebar, you must know the shapes and lengths of your bars.
Once you have that information, use our weight calculator to establish exact figures.
A 16mm rebar weighs 1.58 kg/m. That equates to 480g per foot, or 2.07ft per kg.
Extrapolating this:
A 3m length of 16mm rebar will weigh 4.74Kgs
A 6m length of 16mm rebar will weigh 9.48Kg.
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