Technically, gravel is the material mined from a creek or river bed and consists of rounded rocks that have become smooth over many years of rolling together in the stream of water. However, “gravel” has become a slang term for the material on any rock road, parking lot or driveway. It is common for a customer to ask us for some “gravel for my driveway,” when most likely they probably need a crushed stone product. A crushed stone product is typically mined from below ground and usually has more jagged edges. Every project is different and consideration should be given to the general condition of the construction site, drainage, and use. Some basic “rules of thumb” apply.
While there are many different types of crushed stone out there, these products can be categorized in two groups. One group is materials that are clean and have little or no “fines” or smaller rock in them. The other group consists of materials that do have smaller particles in them including dust. Clean rock is what is used for drainage or to “top off” a driveway. Stone that includes fines are commonly referred to as base materials and are the best used as a base for a driveway or a foundation for a retaining wall. The fines in the product act as a binder that holds the rock together and makes a compacted sturdy base. A clean material lacks the binder and will not compact.
Tri-axle holds between 1 and 23 tons of product
Single-axle holds between 1 and 8 tons of product
To calculate tonnage use:
Length x Width x Depth x .0043 =Tonnage
(Length and width should be measured in feet, depth should be measured in inches)
Tri-axle holds 15 cu. yds of dirt
Single-axle holds 5.5 cu yds of dirt
To Calculate cubic yards use:
Length x Width x Depth ÷ 27 = cubic yards
(Length, width, and depth should be measured in feet)