How to calculate the amount of steel in a slab, column, beam and base plate | calculation of steel for plate | steel calculation for column | steel calculation for beam | calculation of steel for the foundation.
Steel is one of the most important building materials used in construction because we know that concrete is good in compression but weak in tension so we use steel bar to increase the tensile strength of concrete that's why steel is also known as reinforcing bar or rebar.
Steel is embedded in concrete fibers for the construction of foundations, beams, columns and slabs in residential and commercial buildings. The column beam and footing, all of which are load-bearing structures, safely transfer all incoming loads to the soil bed.
In this article, we know how to calculate the amount of steel in a slab column, beam and foot. We will follow simple rules to calculate the amount of steel required for RCC slab, beam, column and foundation.
Rules of thumb refer to any easily learnable process or standard based on practical experience rather than theory, they are not strictly accurate or reliable for every situation, they give us quick decisions on the construction site.
How to calculate the amount of steel in a slab, column, beam and base plate Calculation of steel for slab: To calculate the amount of steel required for an RCC slab, measure the length, width and thickness in meters, multiply everything to get the volume of the rcc slab in cubic meters. Multiply 1% of the slab volume by the density of the steel (7850 kg/m3) to get the amount of steel required for the slab in kg.
FOR THE EXAMPLE
How to calculate the amount of steel in a slab whose length, width and depth are 6 m × 5 m × 0.10 m. According to the Rule of thumb The amount of steel required for RCC slab should be 1% of the total volume of the concrete slab. Calculate the volume of concrete as 6m × 5m × 0.10m= 3m3:- here we have a slab 6 meters long, 5 meters wide and 100mm or 4″ thick, so slab concrete volume = 6m × 5m × 0.10 m = 3 m3.
Calculate the amount of steel in the slab as 1% of the volume of concrete = 0.01× 7850× 3= 236 kg :- using rule of thumb The amount of steel required for RCC slab should be 1% of the total volume of concrete, here density of steel = 7850 kg/ m3, so the amount of steel in the slab = 0.01× 7850× 3= 236 kg.
Calculation of steel for a column: To calculate the amount of steel required for a column, measure the length, width and thickness of the column in meters, multiply everything to get the volume of the rcc concrete column in cubic meters. Multiply 2.5% of the column volume by the steel density (7850 kg/m3) to get the amount of steel required for the column in kg.
Example 1
FOR COLUMN
How to calculate the amount of steel for 10 columns, the length, width and height of the column is 0.30 m × 0.30 m × 4.5 m. As a rule of thumb, the amount of steel required for an RCC column should be 2.5% of the total volume of concrete.
Calculate the volume of concrete as 0.30 m × 0.30 m × 4.5 m × 10 = 4.05 m3:- here we have 10 columns of 0.30 meter length, 5 meter width and 4.5 meter height, so concrete volume of 10 columns = 0.30 m × 0.30 m × 4.5 m × 10 = 4.05 m3.
Calculate the amount of steel for the column as 2.5% of the volume of concrete = 0.025 × 7850 × 4.05 = 795 kg :- using the rule of thumb The amount of steel required for an RCC column should be 2.5% of the total volume of concrete, here the density of steel = 7850 kg /m3, so the amount of steel for the column = 0.025× 7850× 4.05= 795 kg.
Calculation of steel for a beam: To calculate the amount of steel required for an arch beam, measure the length, width and thickness of the beam in meters, multiply everything to get the volume of the concrete arch beam in cubic meters. Multiply 2% of the beam volume by the steel density (7850 kg/m3) to get the amount of steel required for the beam in kg.
Example 2
IN THE BEAM
How to calculate the amount of steel in a beam whose length, width, and thickness are 100 m × 0.230 m × 0.230 m. As a rule of thumb, the amount of steel required in an RCC beam should be 2% of the total volume of concrete.
Calculate the volume of concrete as 100m × 0.230m × 0.230m = 5.29m3:- here we have total length of beam 100m, width 230mm and thickness 230mm so volume of concrete for beam 100m = 0.230m × 0.2030 m × = 5.29 m3.
Calculate the amount of steel in the beam as 2% of the volume of concrete = 0.02× 7850× 5.29= 830 kg using rule of thumb The amount of steel required in an RCC beam should be 2% of the total volume of concrete, here density of steel = 7850 kg/m3, so the amount of steel in the beam = 0.02× 7850× 5.29 m3 = 830 kg.
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Example 3
IN THE FOOTING
How to calculate the amount of steel in a footing of the length, width and thickness of one footing is 3m × 3m × 0.3m. As a rule of thumb, the amount of steel required in the base plate should be 0.5% of the total volume of concrete.
Calculate the volume of concrete as 3m × 3m × 0.3m = 2.7m3:- here we have footer length 3m, width 3mm and thickness 300mm so volume of concrete per footer = 3m × 3m × 0.3 m = 2.7 m3. Calculate the amount of steel in the footer as 0.5% of the volume of concrete = 0.005× 7850× 2.7= 106 kg :- according to the use of inch The amount of steel required in the footer should be 0.5% of the total volume of concrete, here the density of steel = 7850 kg /m3, so the amount of steel in the foot = 0.005× 7850× 2.7 = 106 kg.
How much steel is needed for the slab, beam, column and footing per 1 m3 of concrete footing steel calculation: To calculate the amount of steel required for an arch footing, measure the length, width and thickness of the footing in meters, multiply everything together to get the volume of the beam in cubic meters. Multiply 0.5% of the concrete footing volume by the steel density (7850 kg/m3) to get the amount of steel required for the footing in kg.
Example 4
IN THE SLAB
How much steel is needed in a slab per 1 m3 of concrete according to the given volume of concrete, 1 m3 slab Calculate the amount of steel in the slab as 1% of the volume of concrete = 0.01× 7850× 1= 78.50 kg :- by using rule of thumb The amount of steel required for RCC slab should be 1% of the total volume of concrete, here density of steel = 7850 kg/m3, so the amount of steel in 1 m3 of concrete slab = 0.01× 7850× 1= 78.50 kg, so 78.50 kg of steel is needed for the slab per 1 m3 of concrete.
Notes: 78.50 kg of steel is required per slab for 1 m3 of concrete.
Example 1
FOR COLUMN
How much steel is needed for a column per 1 m3 of concrete. According to the given volume of concrete 1m3 column Calculate the amount of steel required for the column as 2.5% of the volume of concrete = 0.025 × 7850 × 1 = 196 kg:- by using rule of thumb The amount of steel required for an RCC column should be 2.5% of the total volume of concrete, here the density of steel = 7850 kg/m3, so the amount of steel in 1 m3 of concrete column = 0.025× 7850× 1= 196 kg, so the column requires 196 kg of steel per 1 m3 of concrete.
Notes: 196 kg of steel is needed per column per 1 m3 of concrete.
Example 2
FOR BEAM
How much steel is needed for a beam per 1 m3 of concrete. According to the given volume of concrete 1m3 beam Calculate the amount of steel required for the beam as 2% of the volume of concrete = 0.02× 7850× 1= 157 kg :- by using the rule of thumb Amount of steel required
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