How Much Gravel Do I Need for a Driveway?
A 50 × 12 ft gravel driveway built 6 inches deep needs about 11 cubic yards, or roughly 16 tons. Here is how to calculate it and how to layer the stone.
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How Many Concrete Blocks Do I Need for a Wall?
A standard block wall needs 1.125 blocks per square foot. Here is how to count blocks by area or by courses, with examples and mortar estimates.
How Many Bags of Concrete Do I Need? (10×10 Slab and More)
A 10×10 ft slab that is 4 inches thick needs about 56 bags of 80 lb concrete. Here is the formula, a chart for common slab sizes and tips for ordering.