KB220
A key design feature of the new £58m project, designed by Alec French Architects, is the building’s Cross Laminated Timber CLT frame. Timber is a renewable resource with natural insulation properties which will help reduce heat loss and carbon emissions in winter, and heat gain in summer. CLT offers much better environmental
performance when compared to more energy intensive materials like steel and concrete. Buildings can be constructed more quickly because the timber panels are preassembled off site. Fewer surprises for developers Because Passivhaus involves detailed modelling before construction begins, problems can be ironed out well in advance. For developers, that means fewer surprises on site and the risk of last-minute changes or costly disputes is greatly reduced.
Having two schools share the same ultra-efficient building also means fewer materials are needed in its construction. The Lyde Green school building’s mechanical Ventilation with Heat Recovery (MVHR) system will supply fresh, filtered air continuously while recovering up to 90% of the heat from the outgoing stale air. For construction companies, having
integrated systems often mean less coordination complexity on site, particularly when it comes to mechanical and electrical works. It’s important, however, to decide in advance whether primary and secondary areas require separate MVHR systems to reflect different occupancy patterns. The new school building’s airtight
construction, together with thick layers of high-performance insulation and triple- glazed windows, will prevent uncontrolled air and heat loss.
For adjoining schools, it’s prudent to
have clearly defined shared or segregated areas such as sports halls or dining areas to avoid future conflicts. Plan massing and circulation to allow independent operation of primary and secondary facilities without affecting the thermal envelope. Setting new school construction standards Commissioned by South Gloucestershire Council and built by BAM Construction, the development at Lyde Green will set a new benchmark for future Passivhaus schools. It offers a cost-effective solution for education providers who are grappling with rising demand for both mainstream and specialised school places. Passivhaus design also reduces operational risks for developers and streamlines the construction process, providing highly sustainable buildings that can support multiple schools under one roof.
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