Brick Patio Guide
Brick patios use the same bricks as walls but laid flat on a sand bed instead of set in mortar vertically. The brick count per square foot is different: 4.5 standard bricks per sq ft in a running bond pattern (the most common), vs 6.86 per sq ft when set vertically in a wall.
Like concrete pavers, brick patios need a compacted gravel base (4-6 inches) and a 1-inch leveling sand bed. After the bricks are laid, sweep polymeric sand into the joints and activate with water -- this locks the bricks together and prevents weed growth. Use the Gravel Calculator and Sand Calculator for base materials.