Our mix-on-site concrete calculation is based on batching by volume Large construction sites employ batching by weight which is more exact . You can also estimate the quantity of sand and gravel required by weight; 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 of stone respectively, when calculating in metric ...

These Concrete Calculators provide the required quantities of cement and all-in ballast or cement, sharp sand and gravel required to give a defined volume of finished concrete. Both of these concrete calculators make an allowance for ...

Paving mix - 1:3½ cement:all-in ballast or 1:1½:2½ cement:sharp sand:gravel. Comment: If you are wondering how 1:2½:3½ equals 1:5 & 34;shouldn& 39;t it be 1:6& 34; I hear someone say , the answer is that there is a lot of space between the individual pieces of gravel which will accommodate some sand, and when 2½ parts sand is mixed with 3½ parts gravel, the final volume will reduce down to about 5 ...

Sand calculator online - estimate the sand required for your construction or landscaping project in weight pounds, kilograms, tons, tonnes and volume cubic ft, cubic yards, cubic meters . If you are wondering & 39;how much sand do I need& 39;, our free sand calculator is here to do the math for you. Information about sand density, common sand types, sand grain sizes, how much a cubic yard of sand ...

Quantities of materials for concrete such as cement, sand and aggregates for production of required quantity of concrete of given mix proportions such as 1:2:4 M15 , 1:1.5: 3 M20 , 1:1:2 M25 can be calculated by absolute volume method. This method is based on the principle that the volume of fully compacted concrete is equal to …

for 15MPa, as per Indian code, its mix ratio is 1:2:4, and for this mix, it is shown in the above table that, cement required is 310kg of cement or 6.2 number of bags of cement, 0.434 cubic meter of sand FA and 0.868 cubic meter

Cement = 8.25 bags/cum of concrete Sand = 13.68 cft/cum Aggregate = 27.34 cft/cum b. The nominal mix proportion by Volume for M45 would be 1:1.35:2.7 The approximate quantities are Cement = 9 bags/cum of concrete

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