Working alongside HLM Architects, GreenBuild was appointed at RIBA Stage 1 to provide BREEAM and general sustainability consultancy services. GreenBuild assisted the design process by undertaking Dynamic Simulation Modelling to enhance the design the passive measures. A particular analysis was undertaken on the façade, ensuring internal daylight levels were optimised whilst mitigating any risk of overheating.
GreenBuild’s appointment also included a BREEAM Pre-Assessment and Lifecycle Analysis (LCA) to ensure the scheme achieved BREEAM credit Mat01.
Thermal comfort within the main stairs of the building has been assessed in terms of internal temperature during the summer (May-September) months. These have been compared against the recommended summer-time internal temperature range for circulation spaces within CIBSE Guide A (21-25C).
The thermal comfort strategies used mainly focuses on the glazing and ceramic fritting specification of the main stairs and the introduction of openings to encourage natural ventilation to ensure that internal temperatures with in the mail stair did not exceed recommended internal temperature ranges for more than 3% of it’s occupied hours.
The most effective passive strategies and glazing specifications that will ensure a reasonably comfortable internal environment within the main stair core has been highlighted at right.
Further strategies have been performed to ensure that the percentage of occupied hours where the main stair area will overheat (Ti>25C) is maintained at 3% during the May-September.
These additional strategies have been presented as ‘Additional recommendations’ below.