Rcc Roof Concrete Ratio

For maximum size of coarse aggregates as 40mm and over sand should be half as much as coarse aggregates.

Rcc roof concrete ratio.

3 rcc roof slab in the construction industry when they use the word concrete they are talking about reinforced cement concrete also known as rcc. Labor guideline for steel bars in rcc. A general rule of thumb is if the water is palatable then it is suitable for mixing concrete. It means 1 part of cement 1 5 part of fine aggregate coarse sand and 3 parts of coarse aggregate.

Use this concrete calculator offline with our all in one calculator app for android and ios. For maximum size of coarse aggregates as 20mm and over sand should be two thirds as much as coarse aggregates. 100 kg of steel strengthen the structure in rcc. Reinforced cement concrete or rcc calculator can be used to calculate m15 m20 and m25 mix ratio of cement sand and jelly.

Elastic modulus and poisson s ratio. Like the normal concrete the ratio depends on aggregate type cement content age etc. 1 1 5 3 1 2 4 1 3 6 1 4 8 1 5 10. This ratio of concrete also gives very high strength of cement concrete and is recommended for following works.

The ratio means for every 130 kg concrete 100 kg of steel is needed. Structure carries in heavy loads. Poisson s ratio ranges from 0 15 to 0 20. Rcc mixture has low heat of hydration.

All materials used for a design including the water quality should be to a high standard. Rcc mixture has low elastic modulus because the heat of hydration generated is proportional to elastic modulus. When both fine and coarse aggregates are poorly graded the following general rules regarding suitable proportioning of these will be found helpful. The lower the w c ratio the higher the concrete strength.

Failing this ratio of steel to concrete would cause weakening the structure and fatal cracks to it. It can be measured easily on standard sized cube 15 cm and is often taken as an index of the overall quality of concrete. The reinforced concrete features combined the strength of cement and steel bars which are the basic components of a modern structural design. Ratio of steel required to cement concrete in civil engineering the thumb rule for steel to concrete ratio is 100 130.