Concrete Slabs Calculator - Lowe's. Use our Concrete Slabs Calculator or Estimator as a guide for how much concrete mix you need for your project. Skip to ...

11/1/2012 · For those who want to know how many bags of premix concrete equals 1 cubic metre, or want to know how to calculate it, please read on. The following link states 1 cubic metre = 110 x 20kg premix bags. Therefore 1 bag = 1/110 = 0.009 or 0.01 cubic metres. Premix bags generally say use 1 bag per 300mm deep hole with 200mm diameter.

Concrete Calculator is a quick and easy way to calculate the volume, weight, and number of bags of concrete you need per project. Perfect for slabs, walls, columns, tubes, curbs, and stairs just to name a few. We love to stir-fry and mix things up here with all sorts of internet businesses. Contact us.

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 ...

If you are using 60 lb. bags, you will need 56. If you are using 80 lb. bags, you will need 42. Use the calculator below, and divide the 6" slab numbers by 2 to get your total. A 3" slab will be OK inside the house, but for outside, as the others have said, I'd use a minimum of 4". Hope this helps.

An 80-pound bag of Quikrete’s Countertop Mix will yield approximately 0.6 cubic feet of concrete. For example, to make the above 2-foot-by-3-foot countertop, you’ll need two 80-pound bags.

Jump to How to figure concrete? How many bags of concrete do I need? — Input the weight of one bag of premixed concrete - again, check ...

Jan 05, 2006 · I would not have an issue with the quality in using the concrete bags, just do not over water. And the 0.01 cubic metres per bag sounds right to me. And the amount of concrete needed to fill the hole is correct; however how big are the posts for they will take up space in the hole, therefore less concrete would be required.

... edges etc. For jobs where a stronger rated concrete is needed, youmay consider our. ... Or 108 x 20kg bags equates to one cubic metre of mixed concrete.

Jul 02, 2020 · Typically, premixed concrete comes in 20, 40, and 80 pound bags, with the 80 pound bag yielding about 0.6 cubic foot of concrete. 2 Prepare any forms you will need to hold the concrete, and grade and compact the soil or subgrade material.