The economics of using fewer TMT bars in high-strength construction projects

TMT bars are designed to handle the tensile (pulling) forces in concrete structures while the concrete itself manages compressive (pushing) forces. Their unique construction—a hard outer layer for strength and a softer core for flexibility—makes them ideal for handling heavy loads, seismic activity, and everyday wear and tear. The key to reducing TMT bar usage lies in using higher-strength grades like Fe550, Fe500D and Fe600. These bars are stronger and more ductile, allowing for fewer reinforcements without sacrificing safety. For MSMEs, this can be a game-changer. 

The benefits of using fewer TMT bars 

1. Lower material costs 

Using high-strength TMT bars means fewer bars are needed for the same structural performance. This leads to significant savings on raw materials, helping MSMEs stay within budget while maintaining quality. 

2. Faster construction times 

With fewer bars to cut, bend, and tie, the construction process becomes faster and more efficient. This can help MSMEs meet tight project deadlines and reduce labour costs, which are often a significant expense. 

3. Simplified logistics 

Fewer bars mean less transportation and storage hassle. For MSMEs operating in crowded urban spaces or remote locations, this can simplify project management. 

4. A sustainable choice 

By using less steel, construction projects can reduce their carbon footprint. For MSMEs looking to align with green building practices, this is a bonus. 5. Increased carpet area Use of high strength steel enables thinner columns with same load bearing capacity. This increases the carpet area of the house or flat. 

How does this work in practice? 

High-strength TMT grades: Fe550, Fe550D and Fe600 

Earlier, Fe415 was the standard for construction. But today, Fe500D and Fe600 are becoming the go-to choices for high-strength projects. 

• Fe550D: Known for its superior ductility in combination with high strength, this grade is ideal for earthquake-prone areas where flexibility is key. 

• Fe 550: High strength and if produced with precise processes, can result in good ductility which can be an ideal choice for high rise buildings, infrastructure projects where a smaller number of bars can be used compared to low strength steels 

• Fe600: This ultra-high-strength grade is perfect for large projects like industrial structures and high-rise buildings, where reducing the volume of steel can make a big difference.

Case studies 

Research by the Indian Institute of Technology (IIT) Kanpur shows that switching from Fe415 to Fe550D in a residential high-rise can cut TMT bar usage by nearly 18%. Similarly, using Fe600 in industrial buildings has been shown to reduce material usage by up to 25%, without compromising safety or durability. 

Things to keep in mind when using fewer TMT bars 

Optimising the design 

Reducing the number of bars requires precise planning. Engineers can use modern tools like Building Information Modelling (BIM) to optimise the layout and ensure the structure remains strong and safe. 

Following safety codes 

In India, construction projects must comply with IS 456:2000 and IS 1786:2008 standards, which specify how TMT bars should be used. MSMEs should work with engineers who are familiar with these guidelines. 

Seismic safety 

For areas prone to earthquakes, using high-ductility bars like Fe550D is a must. These bars help structures absorb seismic shocks and reduce the risk of collapse. 

Quality matters 

It’s crucial to source TMT bars from reliable suppliers. Substandard bars can compromise the safety and longevity of a project. Checking certifications and mill test reports is good practice.  

How JSW One MSME simplifies TMT bar procurement 

Sourcing high-quality TMT bars can be a challenge for MSMEs, but platforms like JSW One MSME are changing the game. Here’s how: 

• Access to top-quality materials: The platform offers a wide selection of TMT bars, including Fe550D and Fe600 grades, from trusted manufacturers. 

• Detailed product information: MSMEs can view technical specifications, certifications, and compliance details, helping them make informed choices. 

• Cost savings: With real-time price comparisons and bulk discounts, the platform ensures MSMEs get the best value for their money. 

• Logistics and credit support: From doorstep delivery to flexible payment options, JSW One MSME makes procurement hassle-free. 

Addressing common concerns A higher upfront cost? 

While higher-grade TMT bars may have a higher per-unit cost, the savings from reduced quantities and faster construction quickly offset this. Educating teams and stakeholders about these long-term benefits is essential. 

Adapting to new designs 

Switching to fewer bars may require changes in design practices. Providing training and resources for engineers and contractors can ensure a smooth transition.