Question 1

How do I calculate cubic yards for a patio?

Accepted Answer

To calculate cubic yards for a patio: Multiply length (feet) × width (feet) × depth (feet), then divide by 27. For example, a 10ft × 12ft patio with 4 inches of base material: (10 × 12 × 0.33) ÷ 27 = 1.47 cubic yards.

Question 2

How many tons of gravel do I need?

Accepted Answer

First calculate cubic yards, then multiply by the material's density. Gravel typically weighs 1.4 tons per cubic yard. For example, if you need 2 cubic yards of gravel: 2 × 1.4 = 2.8 tons.

Question 3

What is the coverage rate for decomposed granite?

Accepted Answer

Decomposed granite at 2 inches deep covers approximately 162 square feet per cubic yard. At 3 inches deep, it covers about 108 square feet per cubic yard. Use our calculator for precise measurements.

Question 4

How much flagstone do I need for a patio?

Accepted Answer

Flagstone is typically sold by the ton. Coverage varies by thickness: 1-inch thick flagstone covers about 90-100 sq ft per ton, while 2-inch thick covers 45-50 sq ft per ton. Our calculator factors in thickness and waste.

Question 5

How do I calculate stone for a retaining wall?

Accepted Answer

For retaining walls, calculate the face area (length × height in feet), then factor in stone thickness. A typical 6-inch thick chopped stone wall uses about 15-18 sq ft of stone per ton. Don't forget to include base material and drainage gravel.