Why Bar Length Matters: 38ft vs 40ft TMT Bars
When buying TMT bars, you’ll notice they come in two standard lengths: 38 feet (approximately 11.6 meters) and 40 feet (approximately 12 meters). The choice between them can impact your project cost and material wastage.
40-Foot Bars — The Standard
40-foot bars are the standard length produced by most mills and are ideal for larger spans — they reduce the number of joints needed in longer beams and columns. Less joints means stronger structure and less binding wire.
38-Foot Bars — For Smaller Sites
38-foot bars are slightly shorter and are often produced from specific rolling cycles. They’re suitable for residential construction where spans are typically under 12 feet. Some builders prefer 38ft bars for easier handling on smaller sites.
Straight Length vs Coil TMT
- Straight length — comes directly from the rolling mill, standard option
- Bend material (master bending) — pre-bent at the yard to your specifications, saves site labor
- Coil TMT — supplied in coils, cheaper per tonne but requires a straightening machine on site
Custom Cutting at Sri Kanya
At Sri Kanya, we stock both 38ft and 40ft bars across all brands. Our Autonagar yard can also provide custom cutting and bending services. Discuss your requirements with our team to minimize wastage and optimize cost.
Frequently Asked Questions
Should I buy 38ft or 40ft TMT bars?
40ft bars are standard and reduce joints in longer spans. 38ft bars are suitable for smaller residential projects. Choose based on your structural design’s span requirements — your engineer can advise on the optimal length.
Is coil TMT cheaper than straight bars?
Yes, coil TMT is typically ₹500–₹1,000/MT cheaper than straight bars. However, you need a straightening and cutting machine on site, which adds labor cost. Coils are cost-effective for large projects with high-volume rebar requirements.