Based on the construction type ratio of tmt steel bar to concrete is.
Rcc roof concrete ratio.
If the rcc roof slab size is 25x20 sq.
Steel required for 1000 sq ft slab steel bar calculation in roof slab reinforcement we provide there is a two types of steel bar used main bar and cross bar and know about roof slab steel calculation.
The full form of rcc is reinforced cement concrete.
Failing this ratio of steel to concrete would cause weakening the structure and fatal cracks to it.
Strength of rcc is defined as compressive strength after 28 days expressed as m15 m20 where m stands for mix and 15 stands for 15 n mm 2 n mm 2 must be read as newton s per millimeter cubed compressive strength at 28 days.
Structure carries in heavy loads.
This composition as we all know is called mixed design and varies quarry to quarry ie material properties climatic condition of that area etc hence cant say this proportion is best for this grade while thumb rules are their in existence hence foll.
Cement concrete is strong in compressive strength but weak in tensile strength.
Concrete is an all time material for roofing.
The ratio means for every 130 kg concrete 100 kg of steel is needed.
Simply multiply the volumetric quantity of sand and gravel with 1400 kg m 3 bulk density of sand and 1600 kg m 3 bulk density.
Simple flat roofs to sloped roofs concrete roof tiles offered various styles and colors to meet the architectural needs.
To find out the exact amount it will take to construct an rcc roof slab let s take an example.
It means 1 part of cement 1 5 part of fine aggregate coarse sand and 3 parts of coarse aggregate.
3 in which one part is cement 1.
Reinforced cement concrete or rcc calculator can be used to calculate m15 m20 and m25 mix ratio of cement sand and jelly.
Our mix on site concrete calculation is based on batching by volume large construction sites employ batching by weight which is more exact.
1 main bar main bar is also called as shortist span bar usually used at bottom of slab having.
Where cement concrete 1 1 5 3 is used.
You can also estimate the quantity of sand and gravel required by weight.
In an rcc framed structure the load is transferred from a slab to the beams then to the columns and further to lower columns and finally to the foundation which in turn transfers it to the soil.
5 part is sand and 3 part is aggregate.
Civil construction heavy industrial construction 130 kg m3.
The proportions of materials cement sand coarse aggregate for nominal mix design mix concrete that are normally used are 1 3 6 or 1 4 8.
However you can get a rough estimate with a simple rcc roof slab steel calculation formula.
This ratio of concrete also gives very high strength of cement concrete and is recommended for following works.
