Measure the length, width, and height of the void in inches, then multiply to get the cubic inches of the void. Multiply the cubic inches by the number of voids in the wall, typically 2 per block. Finally, divide cubic inches by 46,656 to find cubic yards of concrete needed. .

Cement mortar ratio should be 1:6 for 9" Brickwork and 1:4 41/2" brickwork Mortar thickness should not be more than 10 mm between the courses and sides of the bricks Ensure you are using good quality of cement and sand.

The basis of concrete is cement, because it binds all the constituent parts of concrete into one whole mixture. And also cement influences durability, frost resistance and moisture resistance of the stiffened concrete. If it is not added enough for a particular brand, then the frozen element will not be as durable.

Apr 30, 2013· Holcim Australia – Excess water in concrete. Less than half the water it contains is needed for the hydration of cement. . To put this another way, each additional 10 litres of water per cubic metre will reduce . about the labour saving effect that "a little" added water has on workability of concrete.

A suitable gauge box or similar is therefore needed. The figures assume a general bulking factor for the materials and does not take into account any water in the sand or aggregate. Water should be added to obtain a workable but nonsegregating mix, the total free .

MATERIAL ESTIMATES. In converting, multiply the required cubic feet of cement by 94 since 1 cubic foot, or 1 standard bag of cement, weighs 94 pounds. When using rule 41 for coarse aggregates, multiply the quantity of coarse gravel in cubic feet by 105 since the average weight of drycompacted fine aggregate or gravel is 105 pounds per cubic feet.

Jan 24, 2012· Simple calculation. Usually it's 1:4 so for every 4 kg of sand 1 kg of cement. As they called tone bag around (400 kg) you'll need 100 kg cement. So one tone bag of sand four bags of cement. Hopefully this will help mDucanon

Most concrete suppliers will not sell fractions of a yard of concrete, though it is worth asking about. So, in this example, you would want to buy bags. Using the table below, you would need to buy at least eight 80 lb. bags and one 40 lb. bag (yielding a total of cubic feet) of concrete to allow enough for extra.

Jul 30, 2009· The sand is sold in m3 but u are going to need stone as well so half a cubic m of sand and half stone will give u 1m3 but don't think u can buy .35m3 or 16bags of concrete mix will give u .35m3 as far as the cement goes it depends on the strength of the concrete but the back of the cement bag will give u how much to use and for what strength

Feb 11, 2019· Concrete Calculation. Convert the volume from feet to cubic yards to get the number of cubic yards of concrete you'll need. Foundation walls and stem walls with footing will require different calculations than anything in the chart. Foundation walls will be thicker and therefore, require more concrete to stay strong against a whole house atop them.

124 General A dmixture is defined as a material, other than cement, water and aggregates, that is used as an ingredient of concrete and is added to the batch immediately before or during mixing. Additive is a material which is added at the time of grinding cement clinker at the cement factory.

The calculator will estimate the volume of concrete or aggregate needed for your project. To use the calculator: Choose units of measure: English or Metric. Enter the width, length, and thickness of the project. Select whether you are measuring thickness in feet or inches. Click Calculate.

Dec 14, 2018· Related Articles. Divide the total cubic feet needed by the total cubic feet that can be made from one bag of Quikrete Concrete Mix. Quikrete's Concrete Mix yield's about .15 cubic feet for every 20 pounds of mix, so a 40pound bag yields .30 cubic feet, 60 pounds of concrete mix yields .45 cubic feet and an 80pound bag yields .60 cubic feet.

Mar 28, 2018· To calculate the volume of concrete you need in cubic yards, you would multiply the length (2 feet) by the width (2 feet) by the depth (4 inches). Divide the answer by 12 to get everything into feet; the answer is cubic feet.

Jul 11, 2013· A concrete wall is 36' long 9' high and 1 1/2' thick the number of cubic yards of concrete that were needed to make this wall is . asked by Rose ann on June 14, 2017; Math. What is the dollar amount for the cement needed for a sidewald that is 4 inches thick, 3 feet wilde, and 40 feet long if the cement is sold for 76 petr cubic yard.

For example, a 10' X 10' X 6" patio needs cubic yards of concrete or about two yard with waste. Using 60pound bags that yield onehalf cubic foot per would require 100 bags. The concrete will set faster than you can mix and pour it and you'll end up with a poor pour and a nasty finish – unless you are willing to work in phases ...

TRIAL BATCH METHOD In the trial batch method of mix design, use actual job materials to obtain mix proportions. The size of the trial batch depends upon the equipment you have and how many test specimens you make. Batches using 10 to 20 pounds of cement may be big enough, although larger batches produce more accurate data.

FULLER'S RULE states "mixing of a total of 42 volumes of cement, sand and gravel will produce a 27 volumes of concrete". The unit for this one is in cubic foot. Conversion of meter = ft, hence (42/) x (/m)^3= or rounded off to a good number of 55.

Mar 11, 2017· Concrete can be poured in different amount of thickness. For instance, if the slab being put in is 4 inches thick, one cubic yard of concrete covers 81 square feet. If it is 8 inches thick, a cubic yard fills 41 square feet. If the slab is 1 foot thick, a cubic yard covers only 21 square feet. How many cubic feet are in one yard?

Concrete for post holes Concrete for post holes. Concrete for post holes. Step 1: Size of posts. Please enter the dimensions of the post(s) you are using. ... To complete this project you will need the following quantity of concrete: cubic metres 0. 20kg bags We've assumed: There ...

This series of concrete calculators has been developed to help you plan your project. You can calculate how much concrete, cement, sand, mortar or render you will need. For each calculation you will have to know the dimensions of your object. The calculator will perform the sums for you where relevant it will add a small percentage for the wastage that inevitably happens when mixing using ...

Amount of concrete E Bags of cement to 1 cubic meter M Weight per bag K Proportions of Concrete Cement : sand : Gravel by weight: : The cost of building materials Cement (per bag) sand (1 ton) Gravel (1 ton) calculation in a new window (Print)

Already know how much concrete you need? Enter the amount (in cubic metres) below. You can then calculate the cost. Known volume of concrete: m 3 . How Much Will It Cost? Now choose your concrete type, enter the delivery address below and click 'Estimate Cost' to calculate the total estimated cost delivered to the site.

1 Specifiers Guide to Polished Concrete in Greater Kansas City v. (Sept. 2011) Provision: The Concrete Promotional .

To produce a cubic yard of 4000 psi concrete, you have to adjust the concrete mixing ratio to: 1. 611 pounds of cement or (277kg) 2. 1450 pounds of sand or (657kg)