A method for evaluating the resistance of paving bricks to impact and abrasion. A sample of 10 bricks is subjected to the action of 10 cast-iron balls 3.75 in (9.53 cm) in diameter and 245 to 260 balls 1.875 in (4.76 cm) in diameter in a drum 28 in (71.12 cm) in diameter, 20 in (50.8 cm) long, rotating at 30 rpm for 1 h. The severity of abrasion and impact is reported as a percentage loss in weight.