Verified Mathematical Model & Formulation
Layer Vol (yd³) = Length (ft) × Width (ft) × Layer Depth (in) / 324 Total Cost = Total Tons × Price per Ton
Calculates the tonnage for each driveway layer separately (Base course, Transition #57 stone, and surface Pea Gravel or Crusher Run) and sums total required tonnage and estimated cost.
Configurable Parameters & Standard Units
- Driveway Length: (Default: 100 ft)
- Driveway Width: (Default: 12 ft)
- Base Layer Depth: (Default: 4 in)
- Top Surface Depth: (Default: 2 in)
- Cost per Ton ($): (Default: 45 usd)
Standard Worked Example & Practical Verification
Scenario: Building a 100 ft × 12 ft driveway with 4 inches of base stone and 2 inches of top dressing.
Practical Takeaway: Separating your order into base stone and fine top dressing ensures long-term drainage and durability.
Frequently Asked Questions
What is the best gravel for a driveway base?
Number 3 or Number 4 crushed stone (1.5 to 2.5 inches in size) is ideal for the structural foundation.
How often does a gravel driveway need replenishing?
Depending on grading and vehicle traffic, a fresh 1-inch top dressing is typically applied every 2 to 3 years.