Environmental Noise Barriers: A Guide to their Acoustic and Visual Design

Environmental Noise Barriers: A Guide to their Acoustic and Visual Design - Printable Version

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Environmental Noise Barriers: A Guide to their Acoustic and Visual Design - david-smith - 04-23-2012

Contents:
Preface ix
Acknowledgements xiii
Locations of photographs xv
1 Introduction 1
Background 1
Environmental noise barrier terminology 4
Noise is a landscape issue 5
Barrier use: a contrast in provision 7
References 11
2 Defining the need for barriers 13
Legislation and policy 13
Introduction 13
The Land Compensation Act, 1973 14
The Noise Insulation Regulations, 1975 14
The Highways Act, 1980 15
National Government policy 15
Local government policy 17
Alternative European approaches 17
The Noise Insulation (Railways and Other Guided
Transport Systems) Regulations, 1996 19
European Union directives 20
Risk to health 21
Design process 22
Acoustic assessment 23
Landscape decision-making process 24
Landscape assessment 24
Assessment of visual intrusion 25
DMRB assessment, consultation and design process 29
Summary of mitigation design strategies 31
References 33
3 Acoustic performance of barriers 35
Introduction 35
Barrier theory 35
Sound insulation 38
Barrier placement 39
Barrier length 40
Bunds versus screens 40
Dealing with reflections from barriers 42
Reflections from high-sided vehicles 43
Improving the acoustic performance of a screen 45
Introduction 45
Cantilevered barriers 45
Tunnels 46
Galleried barriers 46
Louvred covers 46
Diffracting-edge modifications 46
Noise leakage through gaps 51
Varying longitudinal profiles 52
Noise screening by vegetation 52
Acoustic performance testing 53
References 54
4 Barrier morphology and design 57
Anatomy of barriers – elements and characteristics 57
Top section and top edge 58
Middle section 59
Bottom section and bottom edge 60
Barrier façades 61
Ends 62
Vertical profile – angled and cantilevered barriers 65
Support structures, transitions and foundations 72
Fixings 74
Other considerations 76
Viewing at speed 76
Two-faced barriers 76
Barriers: Vertical or horizontal landscape elements? 78
Repetition 79
Pattern 81
Texture 82
Colour 82
Light and shade 87
Profiling 87
Materials and design 89
Choosing materials – visual neutrality and compatibility 92
Reference 93
5 Types of barrier and barrier materials 95
Introduction 95
DMRB guidelines 97
Noise barrier types 99
Earth mounds 99
Earth mounds and planting 104
Timber barriers 106
Sheet-metal barriers 109
Concrete barriers 115
Brick barriers 117
Plastic, PVC and fibreglass barriers 119
Transparent barriers 119
Cantilevered barriers 127
Thatch barriers 131
Bio-barriers 131
Integrated barriers 138
Barrier materials on bridges 139
Barriers and solar panels 141
Tunnels 142
Escape routes 148
Planting and barriers 148
References 150
6 Engineering, safety, environmental and cost considerations 151
Introduction 151
Engineering considerations 151
Environmental considerations 153
Costs 155
References 156
Appendix I – Index of manufacturers, installers and
suppliers 157
Author index 161
Subject index 163

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A useful book that should improve your knowledge of barrier noise control. It has the potential to inspire, to encourage you to develop barriers that are both effective and attractive. Even if you don't have time to read the text, you will gain many ideas merely by looking at the pictures.

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RE: Environmental Noise Barriers: A Guide to their Acoustic and Visual Design - ibg0203 - 02-10-2016

Environmental Noise Barriers is a unique one-stop reference for practitioners, whether acoustical engineers, landscape architects, or manufacturers, and for highways departments in local and central authorities. This extensively revised new edition is updated in line with UK and EU legislation and international provision of barriers.

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