Gravel Volume Formula:
Definition: This calculator estimates the volume of gravel needed for paver projects based on the area dimensions and desired gravel depth.
Purpose: It helps homeowners and landscapers determine how much gravel is required to create a stable base for paver installations.
The calculator uses the formula:
Where:
Explanation: The length and width create the area, multiplied by depth gives volume in cubic feet, then divided by 27 converts to cubic yards.
Details: A proper gravel base provides stability, prevents settling, allows for drainage, and creates a level surface for paver installation.
Tips: Measure your project area accurately in feet. Typical gravel depth is 4-6 inches for paver bases. All values must be > 0.
Q1: How deep should gravel be under pavers?
A: Typically 4-6 inches for pedestrian areas, 6-12 inches for driveways depending on soil conditions.
Q2: What type of gravel is best for paver bases?
A: Crushed stone (3/4" minus) is ideal as it compacts well and provides good drainage.
Q3: Should I add sand over the gravel?
A: Yes, typically 1 inch of leveling sand is added over compacted gravel before laying pavers.
Q4: How do I account for compaction?
A: Gravel compacts about 20-30%, so consider adding extra material to your calculation.
Q5: How many square feet does a cubic yard cover?
A: At 4 inches deep, 1 cubic yard covers about 80 square feet (324 ÷ (4/12) = 81).