{"id":4497,"date":"2020-05-21T18:51:42","date_gmt":"2020-05-21T18:51:42","guid":{"rendered":"https:\/\/www.naimacanada.ca\/?p=4497"},"modified":"2020-05-21T18:51:47","modified_gmt":"2020-05-21T18:51:47","slug":"bc-energy-step-code-building-envelope-performance-update","status":"publish","type":"post","link":"https:\/\/www.naimacanada.ca\/bc-energy-step-code-building-envelope-performance-update\/","title":{"rendered":"BC Energy Step Code \u2013 Building Envelope Performance Update"},"content":{"rendered":"

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BC Energy Step Code: Building Envelope Performance Update
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BC Energy Step Code: Building Envelope Performance Update<\/span><\/h3>\n

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The BC Energy Step Code<\/a> has updated the Thermal Energy Demand Intensity (TEDI) requirements AND added a new compliance option for thermal envelope performance.\u00a0 <\/span>TEDI is a measure of the annual heating energy required to keep a building warm, which indirectly describes how well the building envelope retains heat. \u00a0 \u00a0<\/span><\/p>\n

The former approach listed a single TEDI value for each Climate Zone, meaning buildings in the coldest part of a Climate Zone would need to be designed to meet the same requirements as the warmest parts.\u00a0<\/p>\n

The new approach determines the required TEDI value based on the local Heating Degree Days of the project site.\u00a0 <\/span>This gives a greater allowance for the modelled annual heating energy of buildings in the cold parts of a Climate Zone.<\/p>\n

Although this relaxes the building envelope requirements, it is a favourable change because it means more towns and projects will be aiming to adopt the BC Energy Step Code, which has greater thermal requirements than the BC Building Code.\u00a0<\/p>\n

If builders do not wish to follow the new TEDI approach, they can follow the newly introduced alternate path for building envelope performance.\u00a0 <\/span>This new approach mirrors the recently proposed change to the National Building Code of Canada, where compliance with a Step is demonstrated by modelling your proposed building and showing that it consumes a percentage better than a minimum code-built building.<\/p>\n