Steel Quantity Calculator (Estimate quantity of steel in Slab, Beam, and other Structures)

Saad Iqbal | 🗓️Modified: January 1, 2023 | ⏳Read Time: 4 min | 👁Post Views: 11

Here is an steel quantity calculator that will help users estimate the quantity of steel required for different types of structures based on the concrete volume and the steel weight per cubic meter as specified in the table below.

Use the dropdown menu for selecting the type of structure and enter the for the quantity of concrete in cubic meters, and a click the button get the quantity of steel.

Enter the type of structure and the quantity of concrete in cubic meters:




Quantity of Steel (kg):

Why we use Steel in concrete members?

Steel reinforcement is used in concrete to increase the tensile strength and ductility of the material. Concrete is a strong material in compression, but it is weak in tension. By adding steel reinforcement to the concrete, the tensile strength of the overall structure can be increased, allowing it to better withstand forces such as bending, shearing, and tension.

There are several benefits to using steel reinforcement in concrete, including:

  • Increased strength and stability: Steel reinforcement can significantly increase the strength and stability of a concrete structure, making it more resistant to external forces such as wind, earthquakes, and heavy loads.
  • Ductility: Steel has a high degree of ductility, meaning that it can stretch and deform without breaking. This allows the steel reinforcement to absorb some of the energy from external forces, helping to prevent the concrete from cracking.
  • Improved durability: Concrete structures that are reinforced with steel are less prone to cracking and deterioration over time, making them more durable and long-lasting.

There are various sizes of steel rebars available, ranging from 8 mm to 32 mm in diameter. The size of the rebar is typically determined by the size and type of the concrete structure, as well as the loads that the structure is expected to bear.

Typical Requirement of Steel For different structures

Member TypeConcrete QauntitySteel Weight
Footing1 m380 kg.
Beam1 m3160 kg.
Column1 m3110 kg.
Slab1 m380 kg.
StairCase1 m385 kg.
Lintle/Chhajja/Coping1 m350 kg.
Retaining Wall1 m360 kg.

Factors Affecting quantity of reinforcement required

There are several factors that can affect the required quantity of reinforcement in a concrete structural member, including:

  • The size and shape of the member: Larger and more complex structural members may require more reinforcement than smaller, simpler members.
  • The type of loads that the member is expected to bear: Structural members that are subjected to high levels of tension or bending forces will typically require more reinforcement than those subjected to relatively low levels of stress.
  • The strength of the concrete: Higher strength concrete may require less reinforcement than lower strength concrete.
  • The location of the member: Structural members located in areas with high levels of seismic activity or wind may require more reinforcement to withstand the additional forces.
  • The type of steel reinforcement: Different types of steel reinforcement, such as deformed bars and welded wire mesh, may have different strength and ductility characteristics, which can affect the required quantity.

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