Project Description
Introduction
In Nunavut mass housing project, site is located in northern hemisphere with 64.8255° N, 124.8457° W coordinates, which is difficult to access by any mode of transportation. Moreover here there is lack of labours and weather is not favourable for conventional construction.
3D PPVC technology was adopted to make economical within required timeframe.
Project summary
According to koppen climate classification Nunavut falls into tundra climate, where average temperature is around -13 °C (55.4 °F) and minimum temperature is -45 °C. Based on analysis 0% hours have outdoor comfort, which means we need to provide strategies to make it liveable.
Challenges
Challenging part was to design envelope assembly. As per the local norms required U-value is 0.12 (m2·K/W) for wall and floor and 0.09 (m2·K/W) for roof.
Solutions
With the regular insulation material wall thickness goes around 2 feet, So to reduce wall thickness without compromising thermal performance we studied different insulation and its properties. We were able to achieve required U-value with right insulation (Aerogel insulation) and high performing concrete with 185mm wall thickness.
List of strategies that we have provided are: high thermal mass, high performing glazing system, optimised window to wall ratio, with appropriating heating system. Minimum (10% WWR) wall to window ratio is provided to reduce thermal cold transfer from outside to inside.
What NXB provided? Why client choose NXB over other companies?
Architecture design keeping in mind less module types, and other functional spaces, mechanical services spaces and thermal comfort. Energy analysis of whole building to provide optimized envelope material as well as fenestration design .
