3D Modelling Case Study

Canizarro Hotel, Wimbledon

This 300 year old 4 star boutique hotel in Wimbledon has 46 individually designed bedrooms. In order to create more internal dining space and to maximise the view out onto the garden area, it was proposed to enclose an existing ornate portico adjacent to the dining room, with a glazed façade and to provide heating to the space.

Building Control requirements were that the CO₂ emissions from the building as a whole would not be increased by the new high performance glazed facade. In order to demonstrate this, the whole building was surveyed, the plant and system information gathered and a 3D building model was created for both the existing arrangement and the proposed enclosed portico arrangement.

Both models were run through a CO₂ emissions calculation to produce a BRUKL report and Energy Performance Certificate (EPC)in accordance with the requirements of Approved Document L2B.

From this the required thermal conductivity performance of the new glazed facade was determined.

The two BRUKL reports / EPCs were then compared to show an overall decrease in CO₂ emissions resulting from the new facade and a detailed report compiled for submission to Building Control.

With the new facade, the building’s EPC rating reduced from 91 to 88 (within band D).
The success of this project was due to the commitment from the team to survey the building in sufficient detail to produce the 3D models and the close relationship with the Architect in ensuring that the glazing specification proposed was sufficient to meet the requirements resulting from the calculations.