Buildings which are the subject of BREEAM 2014 New Construction assessments have the option to target new credits under this scheme. This guidance note provides advice regarding these four new credits; Safe Containment in Laboratories, Material Efficiency, Adaptation to Climate Change and Functional Adaptability. This advice note is to assist design teams to commission or produce information that is compliant with the BREEAM criteria and evidence requirements.
Safe Containment in Laboratories (Hea03)
There is one credit available for specific building types with a laboratory containment area and a further credit available for specific building types with containment level 2 and 3 laboratory facilities.
An objective risk assessment of the proposed laboratory facilities should be carried out prior to completion of RIBA Stage 3 to ensure potential risks are considered in the design of the laboratory. Where containment devices such as fume cupboards are specified their manufacture and installation must meet best practice safety and performance requirements and objectives, demonstrated through compliance with the required standards as defined in the BREEAM 2014 manual. Where laboratory containment devices that are ducted to discharge externally are specified, the guidance in the National Annex of BS EN 14175-2 must be followed to ensure an appropriate discharge velocity is achieved.
This is dependent upon the first credit being awarded. Where containment level 2 and 3 laboratory facilities are specified they must meet best practice safety and performance criteria and objectives as follows:
Ventilation systems must be designed in compliance with the best practice guidance set out in ‘DRAFT HSE Biological Agents and Genetically Modified Organisms (Contained Use) Regulations 2010’9.
Filters for all areas designated as containment level 2 and 3 must be located outside the main laboratory space for ease of cleaning/replacement and the filters are easily accessible by maintenance staff or technicians.
The design team must also demonstrate that the individual fume cupboard location and stack heights have been considered in accordance with HMIP Technical Guidance Note (Dispersion) D110.
Material Efficiency (Mat06)
There is one credit available for all building types. Opportunities need to be identified, and appropriate measures investigated and implemented, to optimise the use of materials in building design, procurement, construction, maintenance and end of life. This must be carried out by the design team in consultation with the relevant parties at each of the following RIBA stages:
i. Preparation and Brief
ii. Concept Design
iii. Developed Design
iv. Technical Design
What is Material Efficiency?
The process of undertaking a building project to enable the most efficient use of materials over the life cycle of the building and its components. This includes using fewer materials, reusing existing demolition/strip-out materials and, where appropriate, procuring materials with higher levels of recycled content. It may also include the adoption of alternative means of design/construction that result in lower materials usage and lower wastage levels including off-site manufacture and use of pre-assembled service pods.
Who are the Relevant Parties?
All parties involved in the design, specification and construction of the building should be consulted. This includes but is not limited to, the following: Developer, Cost consultant, Architect, Structural engineers, Building services engineers, Principal contractor, Demolition contractor, Environmental consultant, Project management consultant and Materials suppliers.
This is a complex environmental and design issue where solutions and approaches are largely influenced by building specific factors. The evidence required to demonstrate compliance will vary according to RIBA stage, however evidence for this issue can include:
i. Reports (at Preparation and Brief stage) outlining the activity relating to material efficiency (ideas discussed, analysis and decisions taken)
ii. Drawings or building information model (BIM), calculations showing reduction of material use through design
iii. Meeting notes, construction program, responsibilities schedule (indicating parties consulted).
Adaptation to Climate Change (Wst05)
The main credit in this issue focuses on structural and fabric resilience not covered in other issues. An Exemplary credit is awarded where a holistic approach on adaptation to climate change has been covered, demonstrated by achieving credits in other issues.
A climate change adaptation strategy appraisal for structural and fabric resilience must be conducted by the end of RIBA Stage 2. This can be done by carrying out a structural and fabric resilience specific risk assessment to identify and evaluate the impact on the building over its projected life cycle from expected extreme weather conditions arising from climate change and, where feasible, mitigate against these impacts. The assessment should cover the following stages:
i. Hazard identification
ii. Hazard assessment
iii. Risk estimation
iv. Risk evaluation
v. Risk management.
Exemplary Level Credit
To achieve the exemplary level credit the first credit for this issue must be achieved along with the following criteria points or credits:
Hea 04 Thermal comfort – Criterion 6 in the second credit must be achieved
Ene 01 Reduction of energy use and carbon emissions – At least eight credits in this issue must be achieved
Ene 04 Low carbon design – The Passive design analysis credit in this issue must be achieved
Wat 01 Water consumption – A minimum of three credits in this issue must be achieved
Mat 05 Designing for durability and resilience – Criterion 2 relating to material degradation in this issue must be achieved
Pol 03 Surface water run-off – Flood risk – A minimum of one credit must be achieved and for surface water run-off a minimum of two credits must be achieved.
What are Possible Hazards?
Hazards to the building and the likely impact of the hazards must take the following into account as a minimum:
i. Structural stability
ii. Structural robustness
iii. Weather proofing and detailing
iv. Material durability
v. Health and safety of building occupants and others
vi. Impacts on building contents and business continuity.
Functional Adaptability (Wst06)
There is one credit available for all building types. A building-specific functional adaptation strategy study must be undertaken by the client and design team by RIBA Stage 2, which includes recommendations for measures to be incorporated to facilitate future adaptation.
Functional adaptation measures have been adopted in the design by RIBA Stage 4 in accordance with the functional adaptation strategy recommendations, where practical and cost effective.
Omissions must be justified in writing to the assessor.
Examples of Functional Adaptation Implementation
The implementation will be specific to the building and scope of the project, but consideration should be given to:
- The feasibility for multiple or alternative building uses and area functions, e.g. related to structural design of the building
- Options for multiple building uses and area functions based on design details, e.g. modularity
- Routes and methods for major plant replacement, e.g. networks and connections have flexibility and capacity for expansion
- Accessibility for local plant and service distribution routes, e.g. detailed information on building conduits and connections infrastructure
- The potential for the building to be extended, horizontally and/or vertically.
The functional adaptation strategy and implementation plan report should consider:
i. The potential for major refurbishment, including replacing the façade
ii. Design aspects that facilitate the replacement of all major plant within the life of the building, e.g. panels in floors/walls that can be removed without affecting the structure, providing lifting beams and hoists
iii. The degree of adaptability of the internal environment to accommodate changes in working practices
iv. The degree of adaptability of the internal physical space and external shell to accommodate change in-use
v. The extent of accessibility to local services, such as local power, data infrastructure etc.