What is BB101?
Contents |
[edit] Understanding the UK Government’s Building Bulletin 101 Regulation for School Ventilation Refurbishment
[edit] BB101 explained
When it comes to ensuring proper ventilation, thermal comfort, and indoor air quality in school buildings, the UK government has established Building Bulletin (BB) 101 as the primary reference document. Initially released in 2006, BB101 provides regulations, standards, and guidance for designing the indoor environment of schools. This blog post will delve into the critical aspects of BB101 and explore the recent changes introduced in the revised edition of 2018.
[edit] What is BB101 and its Importance?
BB101 serves as a comprehensive guide for ventilation in schools, with references within Building Regulations parts F and L. Its primary objectives include:
- Describing the considerations for designing the indoor environment of schools.
- Establishing the regulatory framework for schools and recommended performance standards by the Department of Education (DfE).
- Providing detailed guidance on achieving the required levels of ventilation, indoor air quality, and thermal comfort
[edit] The evolution of BB101
The Evolution of BB101: Over 12 years since its initial release, BB101 has evolved to keep up with advancements in ventilation technology, improvements in school insulation, and new insights into effective ventilation strategies. In 2018, the Education and Skills Funding Agency published a revised edition of BB101, incorporating valuable experience gained during this period.
1.0 Better Design Standards for School Ventilation: One of the notable changes in BB101 (2018) revolves around two key areas: Indoor Air Quality (IAQ) and Thermal Comfort.
3.1 Indoor Air Quality (IAQ): The previous edition of BB101 recommended using natural ventilation, primarily relying on openable windows for air exchange. However, this approach exhibited higher energy usage and limited resilience to external conditions. Consequently, BB101 (2018) now emphasises the need for more effective ventilation strategies during the initial design phase. To meet the revised standards, a new category called Hybrid Ventilation has been introduced, which combines aspects of both natural and mechanical ventilation systems.
[edit] Changes at a glance
To gain a better understanding of the updated standards in BB101 (2018), let’s highlight the fundamental changes:
[edit] 4.1 Indoor Air Quality (IAQ)
- Mechanical ventilation systems using fans must maintain a daily average of 1,000 ppm CO2.
- Natural ventilation systems cannot exceed a daily average of 1,500 ppm CO2.
- Excursions beyond the defined limits are limited to a maximum of 20 consecutive minutes per day, with CO2 levels not exceeding 2,000 ppm.
[edit] 4.2 Thermal Comfort
- The concept of adaptive thermal comfort was introduced, allowing the temperature threshold to vary daily based on external conditions.
- BB101 (2018) aligns with CIBSE TM52, which focuses on avoiding overheating in European buildings.
- Criterion one requires that the predicted operative temperature should not exceed the maximum acceptable operative temperature by 1K or more for more than 40 occupied hours between 1st May and 30th September.
[edit] Conclusion
Understanding and complying with the UK government’s Building Bulletin 101 (BB101) is crucial when refurbishing ventilation systems in school buildings. The revised edition of BB101 (2018) introduces significant changes to improve indoor air quality, thermal comfort, and energy efficiency. By adopting hybrid ventilation strategies and adhering to the updated CO2 and temperature requirements, schools can provide a comfortable and healthy environment for their students. Stay informed, stay compliant, and ensure the well-being of future generations through effective ventilation refurbishment.
--Building Ventilation Solutions
[edit] Related articles on Designing Buildings
- Air quality in the built environment.
- Approved Document O.
- Better prediction of overheating in new homes.
- Comfort in low energy buildings.
- Design summer year (DSY)
- Evolving opportunities for providing thermal comfort.
- Future climate models.
- Good homes alliance overheating tool
- Heat stress.
- Heatwave.
- Human comfort in buildings.
- Indoor air quality.
- Indoor air quality BSRIA TG 12/2022.
- Maximum and minimum workplace temperatures.
- Overheating - assessment protocol.
- Overheating guidance for buildings.
- Overheating in buildings.
- Overheating in residential properties.
- Preventing overheating.
- Temperature.
- Thermal comfort.
- Thermal indices.
- Thermal pleasure in the built environment.
- Urban heat island.
[edit] External links
https://www.gov.uk/government/publications/building-bulletin-101-ventilation-for-school-buildings
Other articles by author Simon Windsor https://www.bvs-ltd.co.uk/author/simon/
Featured articles and news
Combating burnout.
The 5 elements of seiri, seiton, seiso, seiketsu and shitsuke.
Shading for housing, a design guide
A look back at embedding a new culture of shading.
The Architectural Technology Awards
The AT Awards 2025 are open for entries!
ECA Blueprint for Electrification
The 'mosaic of interconnected challenges' and how to deliver the UK’s Transition to Clean Power.
Grenfell Tower Principal Contractor Award notice
Tower repair and maintenance contractor announced as demolition contractor.
Passivhaus social homes benefit from heat pump service
Sixteen new homes designed and built to achieve Passivhaus constructed in Dumfries & Galloway.
CABE Publishes Results of 2025 Building Control Survey
Concern over lack of understanding of how roles have changed since the introduction of the BSA 2022.
British Architectural Sculpture 1851-1951
A rich heritage of decorative and figurative sculpture. Book review.
A programme to tackle the lack of diversity.
Independent Building Control review panel
Five members of the newly established, Grenfell Tower Inquiry recommended, panel appointed.
Welsh Recharging Electrical Skills Charter progresses
ECA progressing on the ‘asks’ of the Recharging Electrical Skills Charter at the Senedd in Wales.
A brief history from 1890s to 2020s.
CIOB and CORBON combine forces
To elevate professional standards in Nigeria’s construction industry.
Amendment to the GB Energy Bill welcomed by ECA
Move prevents nationally-owned energy company from investing in solar panels produced by modern slavery.
Gregor Harvie argues that AI is state-sanctioned theft of IP.
Experimental AI housing target help for councils
Experimental AI could help councils meet housing targets by digitising records.
Comments
[edit] To make a comment about this article, click 'Add a comment' above. Separate your comments from any existing comments by inserting a horizontal line.
Thanks for a useful article. Did you know you can set up a profile for your company, with details, logo and website. If you associate the article to that profile, then the company profile will appear at the top of the article. Other forms of marketing within an article will normally be deleted.