Concrete mixer and vibrator is needed.
Rcc mixing ratio for roof.
Poisson s ratio ranges from 0 15 to 0 20.
One of the best concrete mix ratios is 1 part cement 3 parts sand and 3 parts aggregate this will produce approximately a 3000 psi concrete mix.
This ratio of concrete also gives very high strength of cement concrete and is recommended for following works.
However you can get a rough estimate with a simple rcc roof slab steel calculation formula.
To find out the exact amount it will take to construct an rcc roof slab let s take an example.
For a right roof slab concreting we have to prepare proper concrete mix.
Like the normal concrete the ratio depends on aggregate type cement content age etc.
And the concrete mix ratio is 1 2 4 then to find out the construction cost you will need to calculate.
The strength of this mix ratio is good for most concrete slabs footings steps and foundation walls.
Enough water should be collected in water tanks.
Elastic modulus and poisson s ratio.
If the rcc roof slab size is 25x20 sq.
Rcc mixture has low heat of hydration.
Size of aggregates mm water for dry aggregates liter water for aggregates condition from dry to moist batch liter water for best consistency liter small precast work fence posts poles garden furniture and other work of very thin sections.
It means 1 part of cement 1 5 part of fine aggregate coarse sand and 3 parts of coarse aggregate.
Structure carries in heavy loads.
This article provides a brief view of steel bars in cement concrete work.
A solid roof on building is very important for everybody living in the house.
Rcc mixture has low elastic modulus because the heat of hydration generated is proportional to elastic modulus.
Reinforced concrete requires very strong steel bars.
The main point to bear in mind is keep the ratio between fine aggregate and coarse aggregate should be 1 2.