Sound barriers· CUSTIC noise software
With this command, you can draw barriers on the computer screen. The barrier can be eliminated through the ELIMINATE command (used also to eliminate sources).
The software calculates the shadow regions and it applies attenuations values in that places. The buildings can be also considered as sound barriers.
(1) Noise source
(2) No transmission loss
(4) Shadow region
(5) Direct path
The calculation result is better if you introduce more than one barrier.
For more than 4 barriers, the calculation converges. We use the same model as London and Hong Kong.
An important point is that the topographic line command doen’t consider sound reflections. You need to pay attention if you use both commands (topographic lines and barriers) at the same time.
6.1 The Highways Agency (1994) Design Manual for Roads and Bridges, Volume 10, Environmental Design, Section 5, Environmental Barriers, Part 1, Design Guide for Environmental Barriers, HMSO, London.
6.2 The Highways Agency (1995) Design Manual for Roads and Bridges, Volume 10, Environmental Design, Section 5, Environmental Barriers, Part 2, Environmental Barriers: Technical Requirements, HMSO, London.
6.3 The Highways Agency (1994) Manual of Contract Documents for Highway Works Volume 1 Specification for Highway Works Series 2500 Special Structures
6.4 U.S. Department of Transportation Federal Highway Administration (1976) A Guide to Visual Quality in Noise Barrier Design. California Department of Transportation (1997) Technical Noise Supplement 1st Draft
6.6 Benz Kotzen and Colin English (1998) Environmental Noise Barriers: A Guide to their Acoustic and Visual Design,E & FN Spon, London
6.7 David C Hothersall and Richard J Salter (1977) Transport and the Environment, Crosby Lockwood Staples, London
6.8 Ian Sharland (1986) Woods Practical Guide to Noise Control, Woods of Colchester Limited
6.9 Environmental Protection Department, Application of Screening Structure to Abate Noise from Surface Transportation, Environmental Protection Department, Hong Kong
6.10 Environmental Protection Department (2000) Housing Design to Abate Traffic Noise in Hong Kong, Environmental Protection Department, Hong Kong
6.11 Environmental Protection Department (2001) Screening Structures and Building Designs against Transportation Noise in Hong Kong, Environmental Protection Department, Hong Kong
6.12 Hong Kong Government (1991) Environmental Guidelines for Planning in Hong Kong, an Extract from the Hong Kong Planning Standards & Guidelines
6.13 Hong Kong Government (1997) Environmental Impact Assessment Ordinance
6.14 Hong Kong Government (1997) Technical Memorandum on Environmental Impact Assessment Process
6.15 Highways Department (2001) Particular Specification for Noise Barriers, Highways Department, Hong Kong
6.16 Highways Department (2002) Final Report of the Noise Enclosure Lighting - Engineering Study, Highways Department, Hong Kong
Sound barriers · noise barriers
Canarina Environmental Software
Software for environmental consulting firms
Canary Islands, Spain
European Union · network on Pollution
Member of MAPO: European network on Marine Pollution.