what is rcc
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In this article, I will explain " what is RCC ".
What is RCC? | RCC full form
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RCC Concrete |
RCC literally abbreviated as Reinforced Cement Concrete (RCC) means the concrete gets reinforced with Steel in the form of steel rods or any other form. This is widely used in the framed structure of so many places in construction like the footing, Columns, Beams and Slabs.
Why Steel is used along with Concrete?
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Steel used for Reinforcement in RCC |
You see, Concrete has a very high Compression strength but it is very weak in tension. So to increase the tensile strength of the concrete reinforcement is used in places where the tension is greater.
Where will the Compression and Tension be in a Structural member?
Nowadays everybody moved to the Framed structure which means, take your own home/ house have you seen your home under construction or the photos of the construction process of your building, you may notice that it has footings, Columns, Beams and Slabs all these were collectively called as frame of a structure. The Bricks used in between were just used for partition of the rooms.
But in the old days, if you ask your grandparents or houses in villages still exist in some places, there will be no footing, Columns, Beams or Slabs. They only have walls but are more than one foot in width. So the entire load of the building gets transferred through the wall the are known as load load-bearing section.
What is the Grade of RCC?
RCC can be made in different grades based on our requirements. The grade of Concrete can be classified as Nominal Mix ( M5 to M20) and Design Mix ( M25 and above). The difference between the nominal mix and the design mix is that nominal mixes can be produced by mixing by hand or using mixer machines in small batches since the compressive strength is not affected much. The design mixes can only be made in the Concrete batching plants in large volumes in special proportions of the ingredients for that particular specialized work.
Ratio of Concrete
Each grade of concrete has a specific ratio that can be used for a particular purpose. The Ratio of each grade of concrete are given below,
- M5 - 1:5:10 ( Cement: Sand: Aggregate) - Used For Non-structural Components - Like levelling beds.
- M 7.5 - 1:4:8 - Used for Fence Posts and Garden Walls
- M 10 - 1:3:6 - Used for Pavement and driveways to support pedestrians and Light Vehicles and Footing PCC
- M15 - 1:2:4 - Used for Flooring and Other PCC works
- M20 - 1:1.5:3 - Used for Residential Construction and Low Rise Buildings
- M25 - 1:1:2 - Used for Construction of Reinforced Members of Column and Beams of small to medium-sized buildings.
- M30 - 1:0.75:1.5 - Used for Raod Construction projects requiring resistance to heavy traffic and Resistance to weather conditions such as Concrete walls like shear walls etc.,
- M35 - 1:0.5:1 - Used mostly in Pavement and road construction due to its heavy flexural strength
- M40 - 1:0.25:0.5 - Used mostly in Pre-Stressed members such as Footing, Column, Beams and Slabs.
- M5 - 1:5:10 ( Cement: Sand: Aggregate) - 2.7 bags: 0.46 cum: 0.95 cum
- M 7.5 - 1:4:8 - 3.3 bags: 0.46 cum: 0.92 cum
- M 10 - 1:3:6 - 4.3 bags: 0.45 cum: 0.9 cum - This is mainly used for the PCC just for your info.
- M15 - 1:2:4 - 6.2 bags: 0.43 cum: 0.86 cum
- M20 - 1:1.5:3 - 8 bags: 0.4 cum: 0.82 cum
- M25 - 1:1:2 - 10.8 bags: 0.38 cum: 0.75 cum
- M30 - 1:0.75:1.5 - 13.39 bags: 0.35 cum: 0.7 cum
- M35 - 1:0.5:1 - 17.28 bags: 0.3 cum: 0.6 cum
- M40 - 1:0.25:0.5 - 24.69 bags: 0.21 cum: 0.43 cum
- Mason - 0.17 Nos
- MC - 2 Nos
- Fc - 0.9 Nos
- Mixer Operator - 0.07 Nos
- Mixer - 0.07 Nos
- Vibrator - 0.07 Nos
- Mason - 0.23 Nos
- MC - 3.5 Nos
- Fc - 0.9 Nos
- Mixer Operator - 0.1 Nos
- Mixer - 0.1 Nos
- Vibrator - 0.1 Nos
- Mason - 0.2 Nos
- MC - 3 Nos
- FC - 0.9 Nos
- Mixer Operator - 0.07 Nos
- Mixer - 0.07 Nos
- Vibrator - 0.07 Nos
- Mason - 0.24 Nos
- MC - 2.5 Nos
- FC - 0.9 Nos
- Mixer Operator - 0.07 Nos
- Mixer - 0.07 Nos
- Vibrator - 0.07 Nos
- Mason - 0.3 Nos
- MC - 3.5 Nos
- FC - 0.9 Nos
- Mixer Operator - 0.1 Nos
- Mixer - 0.1 Nos
- Vibrator - 0.1 Nos
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