Navigating Iron Rods in Construction: Types, Sizes, and Cost Considerations

Taiwo Ajayi
3 Min Read

Reinforcements, such as iron rods or steel bars, are important structural components of any building and are mainly used to receive and transfer loads from one point to another.

Iron rods come in different sizes, sometimes the structural engineer may recommend 12mm, 16mm, 20mm, 25mm, 10mm, 8mm, or others depending on the strength of the material and other design specifications.

There are four types of iron rods used for load-bearing purposes. They include cold steel, pressed steel, hot deformed bars, and mild steel plain bars.


The type commonly used in enhancing the tensile strength of concrete in beams and columns in Nigeria falls under the Hot Rolled Deformed Bars category, and that is the most popular of all rod types.

In case you are going to the building material markets soon, these reinforcements are commonly known as iron rods by traders, and they take different finishes for different construction purposes.

For small-to-medium-scale projects, 6mm, 8mm and 10mm bar sizes will economically do the work without adding unnecessary weight to the building.

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But for complex engineering constructions like bridges, and tunnels, where the length of work runs in kilometers, higher-diameter bars will be needed so as not to degrade the structural integrity of the project.

For contractors, real estate developers, structural engineers, masons, quantity surveyors or estimators who may want to know the price per kg of iron rods in their locality, know now that it may vary as the amount provided here is the likely cost of this building material this year.

Depending on how you choose to order them, retail or wholesale quantities are usually sold per ton.

The amount per unit of TMT rod recommended by the Standard Organization of Nigeria (SON) is below:

The average price per ton of TMT iron rods for March 12, 2024, is ₦420,000. Below is the price list for a single 12 meter length of TMT rods.

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The amounts listed above are for a unit rate; to get how much a tonnage costs, you have to multiply the unit amount with the corresponding quantity.

For the price of locally made Nigerian rods, a ton of 12mm iron rod is ₦415,000 naira. The same price applies to other sizes per ton.

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