BREEAM (Building Research Establishment Environmental Assessment Method) is the world’s leading sustainability assessment method for master-planning projects, infrastructure and buildings. It recognises and reflects the value of higher performing assets across the built environment life-cycle, from new construction to in-use and refurbishment.
What is BREEAM Hea 05?
BREEAM looks at different aspects of the project and assesses each area based on criteria set out in specific scopes. The specific scope for acoustics is Hea05 Acoustic Performance which details the requirements and criteria for compliance.
The aim of Hea 05 is to ensure that a building’s acoustic performance including sound insulation meets the appropriate standards for its purpose. It covers most types of building, including multi-residential and other residential building types, education, healthcare, offices, law courts, industrial, retail and prisons.
Given the divergence of uses for the above buildings the criteria can change considerably. More information found here.
What do we test and why?
The building is tested in line with existing standards and guidelines (BB93, HTM08-01) etc. Credits are awarded for passing the various elements shown in tables 19 – 24 of Hea 05 along with compliance notes and methodology.
Once enough credits have been acquired (assessed by a BREEAM approved independent assessor) a BREEAM certification is awarded based on a ratings system which is reflected by stars shown on the awarded certificate. The ratings range from acceptable to pass, good, very good, excellent and the top rating of outstanding.
How do we test?
Buildings are tested using methods already used in acoustics however BREEAM requirements may need performance levels to exceed those shown in the standards or guidelines. For example Table 24 of the BREEAM acoustic criteria for multi-residential buildings shows how achieving improved performance levels can award additional credits.
Airborne sound insulation values are at least 3dB higher and impact sound insulation values are at least 3dB lower than the performance standards in the relevant Building Regulations or Standards.
Airborne sound insulation values are at least 5dB higher and impact sound insulation values are at least 5dB lower than the performance standards in the relevant Building Regulations or Standards.
Airborne sound insulation values are at least 8dB higher and impact sound insulation values are at least 8dB lower than the performance standards in the relevant Building Regulations or Standards.