Wooden posts are combined with metal railings to create a decorative fence for a raised patio. The calculator will then tell you the number of bags you need based on the different size of bags we carry. Spruce up your outdoor space with products handpicked by HGTV editors. Countertop Mix It also changes the look of the house. For a six-foot-high fence post, we would need a hole that’s 36 inches deep and 12 inches in diameter. Finally, the calculator sums up the volume under the platform and each step to calculate the total volume in cubic yards: $$Total\,volume = Volume\,under\,platform + Volume\,under\,steps = 2016\,yd^3 + 315\,yd^3 + 630\,yd^3 + 945\,yd^3 = 3906 \,yd^3$$. Knowing how deep your fence post needs to be set is key to answering the question. This dramatically reduces the probability of having insufficient concrete mix. Fast Setting Concrete Mix, 5000 Plus Concrete Mix Since bags are only sold in whole (not half, or quarter) quantities, you’ll need to purchase three (3) 60-lb. The ready mix concrete calculator does the following calculations: $$Volume = \pi \times (Outer\,radius^2 – Inner\,radius^2) \times Height = \pi \times (5\,ft^2 – 4.5\,ft^2) \times 5\,ft = 74.6\,ft^3$$, $$Weight = Volume \times 145\,lb/ft^3 = 74.6\,ft^3 \times 145 = 10819\,lb$$, $$Bags = {Weight \over 40\,lb} = {10819\,lb \over 40\,lb} = 270.4 \rightarrow 271\,bags$$, $$Cost = Volume \times Price\,per\,unit\,of\,volume = 74.6\,ft^3 \times 108\,$/yd^3 = $298.45$$, We imagine you are wondering what happens if you want to use concrete bags weighing different amounts. Circular slab with price per unit of volume, 4 curbs with price per unit volume and 50 lb bags of concrete. All rights reserved. Privacy Policy. The general rule of thumb when setting a post is that the depth of the post’s hole needs to be 1/3 to 1/2 of the actual above-ground height of the post. Also, if you know the price per unit volume, then our calculator can work out the total cost: $$Cost = Total\,volume \times Price\,per\,unit\,of\,volume$$. The diameter of your post hole should be three times the diameter of your post. High Strength Concrete Mix, Crack Resistant Concrete Mix So, if you’re planning on using a four-inch round or 4x4-inch square post, your post hole will need to be 12 inches in diameter. Enter the number of bricks (8" x 2" x 4") or blocks (8" x 8" x16") in the box below that you plan to use for your project.
bags for one cubic yard. Countertop Mix bag (yielding a total of 5.1 cubic feet) of concrete to allow enough for extra. From a fence to a row of bamboo, these strategies will shield an outdoor space from the world's eyes. Calculate the required weight and volume of readymix concrete you need for your wall, column, steps, slabs, footings, and others. Paver Base Sand Our calculator can do all the conversions for you, meaning you don’t have to. Tube Sand, Top'n Bond Concrete Patcher Please note, other standard unit conversions that might be helpful are: $$145\,lb/ft^3 = 2400\,kg/m^3 = 3915\,lb/yd^3$$. 2, 2.25, or .5), Sand Mix A wood fence can be a great way to give a home a definitive border. Your concrete will cure evenly when temperatures are mild and the water is at a tepid temperature. Our example post will require two bags for every post if you’re using fast-setting concrete. I want to construct a circular slab of concrete measuring 5 ft high.
Sign up to receive our quarterly newsletter. The calculator would perform the following calculations to calculate that the slab would need 174 bags: $$Volume = Length \times Width \times Thickness = 12\,ft \times 12\,ft \times 4\,in = 48\,ft^3$$, $$Weight = Total\,volume \times 145\,lb/ft^3 = 48\,ft^3 \times 145 = 6960\,lb$$, $$Bags = {Weight \over 40\,lb} = {6960\,lb \over 40\,lb} = 174\,bags$$. Easy to use calculator for how much concrete you need in cubic feet, cubic yards, cubic meters, tons, tonnes, as well as bags of concrete of different sizes. Shore up those sagging posts with concrete. If there are multiple steps, separately calculate the volume under the steps for each and then sum to find the total volume under the steps (more details in the example). Here’s what you need to get everything upright and strong. Pre-Mix Bag Concrete Yield The following table shows the approximate yield of mixed concrete for common bag weights. The price of the concrete is $108 per cubic yard. Instead of putting up an entire fence, build a barrier with wood panels. Dive into your options for brick and concrete fire pits, and take the first step toward creating a cozy backyard gathering place. This calculator is based on a 3/8" mortar joint. Weight can be given in pounds (lb), US short tons (t), imperial-long tons (long t) or kilograms. Crack Resistant Concrete Mix, Fence Post Mix If you need to construct multiple concrete slabs/columns, etc., then our calculator can work out the total volume required: $$Total\,volume = Volume \times Quantity$$. One 80-lb bag of concrete yields .60 cubic feet when combined with 4 quarts of water. The outer diameter is 10 ft and the inner diameter is 9 ft. . Our example post will require two bags for every post if you’re using fast-setting concrete. Once you’ve finished digging your post holes, add about three to four inches of gravel into the bottom and compact it using a post or a 2x4. Let’s say I need to construct a square concrete slab that is 12 feet wide (an area of 144 square feet) and 4 inches deep.
In our final example, let’s say we have 3 steps leading up to a platform (for a total of 4 steps), with the following measurements: The calculator first works out the volume under the platform: $$Volume\,under\,platform = Platform\,depth \times Rise × Width \times Number\,of\,steps = 8 \times 7 \times 9 \times 4 = 2016\,yd^3$$. For each measurement of length, you are able to work in metric units (feet, yards, inches) or imperial units (centimeters, meters). Simply select the desired units in the drop down options and our concrete calculator will do the following conversions: $$1\,ft = 12\,in = 0.33\,yd = 30.48\,cm = 0.3048\,m$$, $$1\,t = 2000\,lb = 0.893\,long\,ton = 907\,kg$$, $$1\,ft^3 = 1728\,in^3 =0.037\,yd^3 = 28,317\,cm^3= 0.0283\,m^3$$.