How to Effectively Estimate the Fill Dirt You Need for Different Projects

Kevin McLaughlin
Updated on
Fill Dirt
Fill dirt is a material used to fill up pits, support buildings, or build slopes and mounds. This form of earthy substance is often free of organic matter, or any biological activity since the presence of organic material creates pockets of gas that influence the integrity and compaction of the fill dirt.
However, to get the best out of fill dirt and ensure optimal project efficiency, you will need to estimate the amount of fill dirt required for your project. Read on to learn more.
Why Estimate the Volume of Fill Dirt?
You must estimate the precise amount of fill dirt you will need for a given project to ensure you have just enough to execute it. Not doing so could result in you having too little or too much material.
Even though receiving more fill dirt from the supplier can solve the problem of not having enough, logistics costs will still be higher. Additionally, you will encounter considerable downtime, particularly if no more fill dirt is available to complete the project.
On the other extreme, having too much filled dirt is a waste of both space and money. Where will you store the extra fill dirt without creating an eyesore? You could return them to the supplier, but that would mean additional logistics costs.
How to Calculate the Volume of Fill Dirt
In essence, determining how much fill dirt, you will require for a specific project depends on how the area you wish to fill is shaped. Thus, here are some helpful guides for calculating the fill dirt volume you need:
Rectangular Area
For rectangular areas, measure the length, width, and depth and calculate the area by multiplying the values. Ensure you use the same units for all of the dimensions. In other words, if you’re using inches, stick with them throughout. Now, it’s critical to keep in mind that fill dirt is sold in cubic yards; therefore, understanding how to convert cubic inches to cubic yards is essential: 1 cubic yard= 46, 565 cubic inches.
You could also make your measurements in feet. This way, you can convert to cubic yards by dividing the resulting area by 27 (the number of cubic feet in a cubic yard).
Circular Area
If you have a circular space, it’s crucial to measure the area’s depth and diameter. For example, if its diameter is 50 inches, its radius is 25 inches, and it is 40 inches deep, you can calculate the area of the whole. You’ll need to use the pi value of 3.142 as the constant when calculating the area. Remember to convert cubic inches to cubic yards if you didn’t measure in yards. Thus, here is the calculation for you to easily follow:
π = 3.142
Area of circular area= πr2h
3.142 x (25 in)2 x 40 in = 78, 550 cubic in
78, 550/46,565 = 1.68 cubic yards
You can also apply other relevant mathematical formulas for other regular or irregular shapes. You can also use a dirt volume calculator to make it much easier.
It’s crucial to estimate how much fill dirt you’ll need so that you have enough for your project. It is not difficult to determine the volume of fill soil; all you need to do is apply simple math. For the final value, ensure you convert it to cubic yards for convenience.
However, if you are dealing with an irregular shape and are unsure how to go about it, you can consult your supplier. Because they regularly deal with such cases, they can help you estimate the required volume of fill dirt.
If you are looking for dirt for your project, DirtMatch can help you meet your needs efficiently. We automatically match you with dirt suppliers, so you don’t have to waste resources hunting for them. Reach out or sign up with us today.

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