Environmental Design Consultancy

Bank of Chile Main Headquarters - Retrofit Project (2014-2015)
Total area: 7,500 m² (to date)
Architects: S3
Studies developed as part of Estudio Diav.

The rehabilitation of historical Bank of Chile's main headquarters in Santiago, has been planned by stages. The complex was originally one high density block in city centre filled with a number of buildings, created as the times required. Some of these constructions have protected heritage status.  The project attempts to unify all buildings, making use of interstitial areas, and renovating all buildings. It considers new HVAC, lighting, and other services, as well as new layouts and furniture.

 

The main feature is the use of all external residual spaces to be integrated into circulations, and to be used to provide better spaces and ventilation within the buildings. To date on early 2015, we have simulated different  office layouts and indoor materials for the offices, in order  to ensure better natural light. We have also developed energy models to assist the design of HVAC systems.

The most relevant feature consists of the new cafeterias on the top level, which was originally planned as an atrium. Together with the hallways, these areas presented great opportunity to develop natural ventilation strategies. At the same time, there were great concerns for overheating, and for very warm air moving downwards towards the offices. We proposed shading devices able to operate in summer and winter. We also tested the possibility of using stack ventilation to improve air circulation, and aid the mechanical ventilation systems.

 

Bank of Chile
Bank of Chile

Original elevation of protected buildings

Bank of Chile
Bank of Chile

Whole block to be restored. To be carried out by stages.

Bank of Chile
Bank of Chile

Reference section shows residual area between buildings

Bank of Chile
Bank of Chile

Current situation on the left, and architects proposal on the right

Bank of Chile
Bank of Chile

Current state of residual spaces

Bank of Chile
Bank of Chile

Residual spaces projected as circulations and ventilation strategies thermal engines.

Bank of Chile
Bank of Chile

Residual spaces projected as circulations and ventilation strategies thermal engines.

Bank of Chile
Bank of Chile

Projects general section, with cafeterias on top level

Bank of Chile
Bank of Chile

Cafeterias on top level. Daylighting models

Bank of Chile
Bank of Chile

Cafeterias on top level. Daylighting models

Bank of Chile
Bank of Chile

Cafeterias on top level. Daylighting models. Testing of different shading devices

Bank of Chile
Bank of Chile

Free running temperatures analysis in cafeteria, considering different types of shading devices

Bank of Chile
Bank of Chile

HVAC loads for cafeteria considering different shading devices and ventilations trategies

Bank of Chile
Bank of Chile

Testing of stack effect on hallways

Bank of Chile
Bank of Chile

Testing of stack effect on hallways

Bank of Chile
Bank of Chile

Daylighting studies for office buildings, considering different layouts and materials.