Wavy walls use fewer bricks than a straight wall (2020)
Corrugated cardboard uses less paper than what it would take with flat paper, and the box weighs less.<p>A wavy fiberglass roof uses less cloth and resin, and less reinforcement, than flat composite sheets would require.<p>A wavy roadside guard rail made of sheet metal uses less metal than a flat guardrail.<p>A snowshovel stamped/moulded with kinks in it can be thinner than a solid one.<p>...