Concrete & Masonry

One cubic yard of mulch covers about 108 sq ft at 3 inches deep, and a 2 cu ft bag covers 8 sq ft. Here is how to work out bags and yards for any bed.

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.

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.

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.