Patent ID: 8268052
Filing Date: 2012-09-18
Classification: E01C

Abstract:
1. A wall assembly for mixing polluted air with less polluted air to provide moderately polluted air, the polluted air comprising at least one roadway pollutant in at least one elevated concentration moving from a roadway region above a roadway toward a leeward region above a leeward area, the less polluted air comprising said at least one roadway pollutant in at least one lower concentration located distal to the roadway, and the moderately polluted air comprising said at least one roadway pollutant at a reduced concentration disposed proximal to the leeward area, the wall assembly comprising: an outer wall spaced apart from the roadway with an upper end thereof positioned a first predetermined height above the ground; an inner wall disposed between the roadway and the outer wall and comprising a lower portion with a top end thereof positioned a second predetermined height above the ground, the lower portion extending between the top end and a bottom end thereof, the lower portion being spaced apart from the outer wall by at least one preselected distance to at least partially define a first channel therebetween; the inner wall additionally comprising a deflector positioned at the top end of the lower portion, the deflector comprising an upper end thereof positioned at a first preselected height above the ground to permit at least a portion of said less polluted air to pass over the upper end while the less polluted air moves from the roadway region toward the leeward region; and the lower portion being formed to at least partially define at least one aperture for directing a first part of said polluted air into the first channel, such that said first part of said polluted air is directed substantially upwardly thereby to mix with said less polluted air to provide said moderately polluted air proximal to the leeward area.