Page 431 - Design of Reinforced Masonry Structures

WALLS UNDER AXIAL AND TRANSVERSE LOADS 6.81

FIGURE 6.46 Guidelines for design of serpentine garden walls [6.34].

6.10.3 Highway Sound Barrier Walls
6.10.3.1 Purpose of Sound Barrier Walls The purpose of providing sound barrier walls
is to reduce the high noise levels produced by the high volume, high speed traffic that flows
through metropolitan areas, exposing a great number of people to this noise hazard. To
reduce these noise levels, it is often necessary to provide noise abatement treatment in terms
of acceptable transmission loss and diffraction of noise. This can be accomplished by tak-
ing several noise-abatement measures as suggested by the Federal-Aid Highway Program
Manual 7-7-3:
1. Traffic management procedures
2. Alterations of horizontal and vertical alignments