It all relies on how and where you pour the concrete, as well as how you finish it. We poured 1000 cubic yards of concrete every day for a parking lot, or roughly 10 cubic yards every 5 minutes. When we were laying concrete for **a bridge deck**, 200 cubic yards took all day, whereas 10 cubic yards took only 25 minutes. The key here is to use a mixer truck to get **more air** into the mix and avoid mixing by hand.

As far as I know, no one has ever poured that much concrete in one day. But we did come close. In 1998, a company called Northbrook Inc. built us a concrete-pouring station so we could pump concrete onto forms without bringing in wheelbarrows of dirt. The machine could pour 50 cubic feet of concrete in three hours. At this rate, we would need two machines to pour **100 cubic yards** - not counting any breaks for lunch or coffee. A crew of four could pour 150 cubic yards in eight hours. That's almost 10 cubic yards per man hour.

The reason no one does this anymore is because it's hard work. It's hot out there under those blowers, and then you're moving around dodging objects that tend to fall from great heights (like parts of buildings being torn down). People also get hurt doing this kind of work. In 1998, three people died and two others were injured while working on this project.

Determine the appropriate amount of concrete. Concrete is often purchased in cubic metres. Here is a conversion chart. One cubic metre contains 1.3 cubic yards (if you have your requirement in cubic yards, all you need to do is divide by 1.3 to get the cubic metre answer). So, if you need to know how much concrete for a given volume, simply multiply the number of meters by 1.3.

As an example, if you need to buy 0.5 cubic meters of concrete and the price per cubic meter is $100, then the total cost will be $500. If you need to buy 1.0 cubic meters of concrete and the price per cubic meter is also $100, then the total cost will be again $500. There are two meters of concrete here; so the total cost is $1,000.

Concrete is heavy. So when placing concrete, it is important to choose a suitable location and not put it where it will be exposed to high temperatures or direct sunlight. These factors can cause the cement in the concrete to harden before it has time to properly cure. This can lead to cracks in the concrete which allow water to enter the structure and cause more damage!

The required quantity of concrete depends on the type of concrete you are making and the size of the container you are putting it in.

A cubic yard of concrete will require several bags. The number of bags required depends on the type of concrete mix you use for your project. If you're using 50-pound bags of concrete, you'll need 72 of them to fill a yard. You'll need 60 60-lb bags of concrete to construct a yard if you're using 60-lb bags.

Concrete is heavy, so you should use a scale to measure out **your ingredients** accurately. Concrete is heavy, water is light, so start by weighing the cement bag to ensure that you get an equal amount in each bag. Next, weigh the aggregate (sand or stone) and divide it by the number of bags needed to reach the desired weight. For example, if you want the concrete to be half its original weight after drying, add half as much sand as cement.

Now you can mix up the concrete. First, pour **all the water** into the mixer until it's fully submerged under water. Add the cement and mix on low speed for about 30 seconds, then increase the mixer speed and mix for **another 30 seconds**. The purpose of this step is to distribute the cement powder evenly throughout the water.

After mixing the concrete, pour it into the forms you've prepared on top of the gravel base. Level the surface with a float or shovel and let the concrete dry for at least 24 hours before moving it into the sun. Drying time may be longer depending on the weather.

(A cubic yard of concrete requires **around forty 80-pound bags** of **prepared components**.) Alternatively, 1 cubic meter of concrete requires around 7.15 bags of Portland cement. There will be 48 cubic meters of sand and.51 cubic meters of gravel. That's about 0.5 cubic yards each.

The total weight of the cement required is 448 pounds or 204 kilograms. If the cement was in powder form this would require 449 pounds or 210 kilograms of dry powder. If the cement was in liquid form this would only require **224 pounds** or 102 kilograms of wet powder.

One cubic yard of concrete has a density of 2290 kg/m3. This means that there are 2290 kg in **a cubic meter** of concrete.

Cement takes volume, not weight, so these numbers should still work even if the cement was in some other form than powder or liquid. For example, if the cement was in blocks with a mass of 100 pounds per block, then the total weight would be 440 pounds or 205 kilograms and the total volume of cement required would be 3.5 cubic yards or 30 cubic meters.

As another example, if the cement was dried and powdered bone, then the weight would be 410 pounds or 198 kilograms and the volume would be 2.25 cubic yards or 20.25 cubic meters.

Multiply your area's width, length, and depth. A common mistake is to buy more concrete than is required; this can be expensive and waste material. Always check with an expert before you start work.