also applies to the alteration, change of use and demolition of existing buildings. Safety Codes in Alberta are developed and administered by Alberta Municipal and Public Affairs. In addition to the production of the National Building Code - Alberta Edition, Municipal Affairs is responsible for the development and dissemination of code interpretations and alternatives known as STANDATA which come in three forms: Building Code Variances - acceptable alternative solutions to the prescriptive requirements (known as Alternative Solutions) in Division B. Building Code Interpretations - interpretations on Code items Building Code Bulletins - additional explanatory information on Code items or general Code topics British Columbia The British Columbia Building Code is based on the core concepts of the National Building Code with some variations specific to the province. The Code applies throughout British Columbia, except for some Federal lands and the City of Vancouver. The Code is published by Crown Publications. Vancouver Under the Vancouver Building Bylaw, Vancouver has developed its own building code based on the National Building Code. Ontario The Ontario Building Code is administered by the Building and Development Branch of the Ministry of Municipal Affairs and Housing. Prior to the enactment of the first Ontario Building Code Act in 1974, individual municipalities were responsible for developing their own building codes, resulting in a fragmented and potentially confusing regulatory environment. The introduction of a provincial Building Code Act and a provincial Building Code addressed this problem by providing for uniform construction standards across Ontario. As of Jan. 1, 2012 the benchmark requirements for energy efficiency regarding houses and large buildings was enhanced. Updated compliance paths for energy efficiency requirements in large buildings are set out in Supplementary Standard SB-10. Residential buildings intended for occupancy on a continuing basis during the winter months must meet the performance levels specified in Supplementary Standard SB-12. As of July 1, 2012 the Ontario Building Code was amended to address the issue of balcony glass breaking on newly constructed buildings. The new amendment, Supplementary Standard SB-13, "Glass in Guards" is intended to help minimize the likelihood that balcony glass will break on newly constructed buildings and help reduce the chance of broken pieces falling to the ground below if balcony glass does break. Quebec The Building Act provides for the adoption of a Construction Code and a Safety Code for buildings, equipment intended for use by the public, and electric, plumbing, and pressure