Noise barrier for high-speed roads comprises two corrugated metal sheets mounted so that peaks face away from each other and troughs coincide, layer of sound-absorbing material being fitted between sheets

摘要

The noise barrier for high-speed roads comprises two corrugated metal sheets (6) mounted so that the peaks face away from each other and the troughs coincide. A layer of sound-absorbing material is fitted between the sheets. It is mounted in a frame (12, 14, 15) attached to posts (3, 4).