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Gravel Volume Formula:
Definition: This calculator estimates the volume of gravel needed for paver projects based on the area dimensions and desired depth.
Purpose: It helps landscapers and homeowners determine how much gravel base material is required beneath pavers for proper installation.
The calculator uses the formula:
Where:
Explanation: The length, width, and depth are multiplied to get cubic feet, then divided by 27 to convert to cubic yards.
Details: A proper gravel base provides stability, prevents settling, and allows for drainage under pavers. Typically 4-6 inches of compacted gravel is recommended.
Tips: Measure your project area accurately. Enter length and width in feet, and depth in inches (calculator converts to feet). All values must be > 0.
Q1: Why is depth input in inches but calculated in feet?
A: Gravel depth for pavers is typically measured in inches (4-6 inches), but the calculation requires feet, so the conversion happens automatically.
Q2: What's the typical depth for paver gravel base?
A: Most paver installations require 4-6 inches of compacted gravel base, plus 1 inch of sand bedding.
Q3: Does this include the sand layer for pavers?
A: No, this calculates only the gravel base layer. You'll need additional sand (typically 1 inch) for the bedding layer.
Q4: How do I account for compaction?
A: Gravel compacts about 20-30%. You may want to add this percentage to your calculated volume or increase your depth input accordingly.
Q5: What if my area isn't rectangular?
A: For irregular shapes, divide into rectangular sections and calculate each separately, then sum the volumes.