Acoustic flexible ductwork
BS EN 13180 defines flexible ductwork as: 'Duct which can be manually longitudinally compressed or decompressed and flexed without permanently damaging the cross section area'
Structural Fixings for Ductwork Systems BG 10/2010, By Glenn Hawkins, Published by BSRIA in 2010, lists the following types of flexible ductwork:
- Metallic, uninsulated flexible ductwork
- Metallic, insulated flexible ductwork
- Non-metallic, uninsulated flexible ductwork
- Non-metallic, insulated flexible ductwork
- Acoustic flexible ductwork
It suggests that acoustic flexible ductwork is most commonly composed of:
- An inner core of aluminium and polyester laminate supported by an encapsulated high- tensile steel wire helix. The core is continuously perforated with micro perforations to enhance the acoustic performance
- A protective film to prevent insulation particles entering the airstream
- Fibreglass or mineral wool insulation
- An outer core of aluminium and polyester laminate
--BSRIA
[edit] Related articles on Designing Buildings
Featured articles and news
Twas the site before Christmas...
A rhyme for the industry and a thankyou to our supporters.
Plumbing and heating systems in schools
New apprentice pay rates coming into effect in the new year
Addressing the impact of recent national minimum wage changes.
EBSSA support for the new industry competence structure
The Engineering and Building Services Skills Authority, in working group 2.
Notes from BSRIA Sustainable Futures briefing
From carbon down to the all important customer: Redefining Retrofit for Net Zero Living.
Principal Designer: A New Opportunity for Architects
ACA launches a Principal Designer Register for architects.
A new government plan for housing and nature recovery
Exploring a new housing and infrastructure nature recovery framework.
Leveraging technology to enhance prospects for students
A case study on the significance of the Autodesk Revit certification.
Fundamental Review of Building Regulations Guidance
Announced during commons debate on the Grenfell Inquiry Phase 2 report.
CIAT responds to the updated National Planning Policy Framework
With key changes in the revised NPPF outlined.
Councils and communities highlighted for delivery of common-sense housing in planning overhaul
As government follows up with mandatory housing targets.
CIOB photographic competition final images revealed
Art of Building produces stunning images for another year.
HSE prosecutes company for putting workers at risk
Roofing company fined and its director sentenced.
Strategic restructure to transform industry competence
EBSSA becomes part of a new industry competence structure.
Major overhaul of planning committees proposed by government
Planning decisions set to be fast-tracked to tackle the housing crisis.
Industry Competence Steering Group restructure
ICSG transitions to the Industry Competence Committee (ICC) under the Building Safety Regulator (BSR).
Principal Contractor Competency Certification Scheme
CIOB PCCCS competence framework for Principal Contractors.
The CIAT Principal Designer register
Issues explained via a series of FAQs.