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Sound barriers · CUSTIC noise software

                               

Barriers:

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

(3) Barrier

(4) Shadow region

(5) Direct path

(6) Difraction

 

(Material)

(Thickness)
mm

(Surface Density) kg/m2

(Transmission Loss), dB (A)

(Polycarbonate)

8-12

10-14

30-33

(Acrylic -Poly-Methyl-Meta- Acrylate (PMMA)-)

15

18

32

(Concrete Block 200x200x400 light weight)

200

151

34

(Dense concrete)

100

244

40

(Light concrete)

150

244

39

(Light concrete)

100

161

36

(Brick)

150

288

40

(Steel), 18 ga

1.27

9.8

25

(Steel), 20 ga

0.95

7.3

22

(Steel), 22 ga

0.79

6.1

20

(Steel), 24 ga

0.64

4.9

18

(Aluminium Sheet)

1.59

4.4

23

(Aluminium Sheet)

3.18

8.8

25

(Aluminium Sheet)

6.35

17.1

27

(Wood)

25

18

21

(Plywood)

13

8.3

20

(Plywood)

25

16.1

23

(Absorptive panels with polyester film backed by metal sheet)

50-125

20-30

30-47

(* Values assuming no openings or gaps in the barriers)

 

The calculation result is better if you introduce more than one barrier.

Example:

One barrier:


Several barriers:

 

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.

 

References:

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 software solutions: This application has been used in great number of environmental reports, courses and studies in the last years: sound barriers · noise barriers

United Kingdom: - noise barriers in London - noise barriers in Birmingham - noise barriers in Glasgow

UK:  noise barriers in Liverpool - noise barriers in Leeds - noise barriers in Sheffield

UK: noise barriers in Edinburgh - noise barriers in Bristol - noise barriers in Manchester

UK:  noise barriers in Leicester - noise barriers in Coventry - noise barriers in Kingston upon Hull

UK: noise barriers in Bradford - noise barriers in Cardiff - noise barriers in Belfast

UK:  noise barriers in Stoke-on-Trent - noise barriers in Wolverhampton - noise barriers in Nottingham

UK: noise barriers in Plymouth - noise barriers in Southampton - noise barriers in Reading

UK:  noise barriers in Derby - noise barriers in Dudley - noise barriers in Newcastle upon Tyne

UK: noise barriers in - noise barriers in Northampton - noise barriers in Portsmouth - noise barriers in Luton

UK:  noise barriers in Preston - noise barriers in Aberdeen - noise barriers in Milton

UK: noise barriers in Keynes - noise barriers in Sunderland - noise barriers in Norwich

UK:  noise barriers in Walsall - noise barriers in Swansea - noise barriers in Bournemouth

UK: noise barriers in Southend-on-Sea - noise barriers in Swindon - noise barriers in Dundee

UK:  noise barriers in Huddersfield - noise barriers in Poole - noise barriers in Oxford

UK: noise barriers in Middlesbrough - noise barriers in Blackpool - noise barriers in Bolton

UK:  noise barriers in Ipswich - noise barriers in Telford - noise barriers in York - noise barriers in West Bromwich

UK: noise barriers in Peterborough - noise barriers in Stockport - noise barriers in Brighton

UK:  noise barriers in Slough - noise barriers in Gloucester - noise barriers in Watford

UK: noise barriers in Rotherham - noise barriers in Newport - noise barriers in Cambridge

UK:  noise barriers in Exeter - noise barriers in Eastbourne - noise barriers in Sutton

UK: noise barriers in Coldfield - noise barriers in Blackburn - noise barriers in Colchester

UK:  noise barriers in Oldham - noise barriers in St Helens - noise barriers in Crawley

UK: noise barriers in Wyre - noise barriers in Forest - noise barriers in Hertsmere

UK:  noise barriers in North East - noise barriers in Derbyshire - noise barriers in Gravesham

UK: noise barriers in Lichfield - noise barriers in West Dorset - noise barriers in Eastbourne

 

UK:  noise barriers in Staffordshire Moorlands - noise barriers in Lewes - noise barriers in Cannock

UK: noise barriers in Chase - noise barriers in Mid Suffolk - noise barriers in Allerdale

UK:  noise barriers in Great Yarmouth - noise barriers in Worcester   - noise barriers in North Dorset

UK: noise barriers in Blaby - noise barriers in High Peak - noise barriers in Bromsgrove

UK:  noise barriers in South Derbyshire - noise barriers in North Devon - noise barriers in Woking

UK: noise barriers in Dartford - noise barriers in Fenland - noise barriers in Rugby

UK:  noise barriers in Hartlepool - noise barriers in Spelthorne - noise barriers in South Northamptonshire

UK: noise barriers in Chiltern - noise barriers in North West - noise barriers in Leicestershire Kettering

UK:  noise barriers in Hart Broxbourne - noise barriers in Pendle  - noise barriers in Castle Point 

UK: noise barriers in Rushmoor  - noise barriers in West Lindsey  - noise barriers in Rother

UK:  noise barriers in Lincoln  - noise barriers in Three Rivers  - noise barriers in Burnley 

UK: noise barriers in Hambleton  - noise barriers in Babergh Hastings  - noise barriers in East Northamptonshire 

UK:  noise barriers in East Dorset  - noise barriers in Cotswold  - noise barriers in South Hams 

UK: noise barriers in Tandridge  - noise barriers in South Holland  - noise barriers in Surrey 

UK:  noise barriers in Heath  - noise barriers in Runnymede  - noise barriers in Rochford 

UK: noise barriers in Harborough  - noise barriers in East Cambridgeshire  - noise barriers in Selby 

UK:  noise barriers in Mole Valley  - noise barriers in Forest of Dean  - noise barriers in Hyndburn

UK: noise barriers in Watford  - noise barriers in Stevenage  - noise barriers in Gosport 

UK:  noise barriers in Redditch  - noise barriers in Daventry  - noise barriers in Tewkesbury 

UK: noise barriers in Harlow  - noise barriers in Mid Devon  - noise barriers in Fylde

UK:  noise barriers in Wellingborough  - noise barriers in Tamworth  - noise barriers in Malvern Hills

UK: noise barriers in Bolsover  - noise barriers in Uttlesford  - noise barriers in Brentwood 

UK:  noise barriers in Epsom and Ewell  - noise barriers in Barrow-in-Furness

UK: noise barriers in Derbyshire  - noise barriers in Dales   - noise barriers in Rossendale 

UK:  noise barriers in Torridge  - noise barriers in Weymouth and Portland  - noise barriers in South Bucks 

 

 

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