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Table of Content
This gravel calculator finds how much gravel you need to cover a desired rectangular or circular area to a certain depth. Also, it takes cost per unit to calculate the total amount of gravel (aggregate) you require for your construction project.
There are two ways to determine the amount of gravel required to cover an area:
To know the amount of gravel needed, it’s necessary to determine both the volume of the space (area) and the weight of the material. This volume ensures you have enough material to cover the entire space. And, the weight of the gravel is helpful for other purposes, such as calculating transport costs, etc.
\(\text{Volume of Rectangular = Length x Width x Depth}\)
Note: Make sure to use the same units for all measurements.
Suppose you have to work on a rectangular driveway with a length of 20 feet, a width of 10 feet, and a desired depth of 5 inches. The gravel you want to use has a density of 104.88 lb/ft³. And, the cost of the gravel per ton is $100. Find out how much gravel (Volume & Weight) you need to complete the project and the estimated cost of gravel.
Solution:
Given that:
By Adding Values In The Volume Formula:
\(\text {Volume = 20 ft x 10 ft x 0.416667 ft}\)
\(\text {Volume = 20 ft x 10 ft x 0.416667 ft}\)
\(\text {Volume = 83.3334 ft³}\)
Calculate Gravel Weight:
1 ton = 2000 lb
\(\ Weight =\frac{Volume (cubic\ feet)\times\ \ Density(in\ lb/ft³)}{2000}\)
\(\ Weight =\frac{83.3334\ \times\ \ 104.88}{2000}\)
\(\ Weight =\ 4.370003496\ tons \)
Calculate The Cost:
\(\text{ Cost = Weight (tons) x Price per ton}\)
\(\text{Cost = 4.370003496 tons x 100 = $ 437.0003496 ≈ $ 437}\)
Cost ≈ $ 437
Here, you can also try a gravel cost calculator that takes the price per unit of gravel and calculates the total cost.
Remember that:
Using too much gravel for a driveway project will give a bulky and overwhelming look. On the other hand, if you use less amount, then it will look unfinished and sparse.
The proper depth of gravel is necessary to form a stable surface. Using too little amount of gravel can create unevenness and can be a reason for potential safety hazards
That is why it is necessary to use the right amount of gravel for your project. The use of a gravel calculator is very helpful in purchasing the optimal amount of gravel for your needs, reducing the risk of overspending or running out of materials.
A cubic yard of gravel weighs between 2200 to 2900 pounds. There are a couple of reasons behind the variation including:
The area covered by a ton of gravel depends on the depth of the gravel. As a general estimate, one ton of gravel can cover:
It’s important to consider that the actual coverage can be slightly affected by the size of the gravel.
The ideal depth of the gravel depends upon its application. However, a minimum depth range of 2 – 4 inches is good to serve as a baseline. While some applications may require more or less depth of the gravel.
Crushed Rock Coverage Per Ton:
Material |
Suggested Depth | Coverage Area per 1 ton |
3”-8” rock | 3”-8” |
60 square feet |
1”-3” rock |
1”-3” | 80 square feet |
3/4”-1” screened gravel | 2” |
100 square feet |
5/8”-1/2” screened gravel |
2” | 120 square feet |
1/4-3/8” screened gravel | 2” |
140 square feet |
References:
From the source of Wikipedia: Gravel, Types, Geological Formation, Modern Production, and much more!
From the site of basalconstruction: How much gravel you need for your driveway?