Ministry of Municipal Affairs and Housing Building and Development Branch f:>ontario MMAH Supplementary Standard SB-1 Climatic and Seismic Data September 14, 2012
2012 MMAH Supplementary Standard SB-1 COMMENCEMENT MMAH Supplementary Standard SB- I comes into force on the I st day of January, 2014. ©Copyright © Copyright Queen's Printer for Ontario 2012 All rights reserved. f11-:> ~..., Ontario Questions regarding copyright, including reproduction and distribution, may be directed to the Director, Building and Development Branch of the Ministry of Municipal Affairs and Housing.
2012 MMAH Supplementary Standard SB-1 [;>Ontario SB-1 Climatic and Seismic Data Introduction The great diversity of climate in Ontario has a considerable effect on the performance of buildings; consequently, building design must reflect this diversity. This Supplementary Standard briefly describes how climatic design values are computed and provides recommended design data for a number of cities, towns, and lesser populated locations. Through the use of such data, appropriate allowances can be made for climate variations in different localities of Ontario and the 2012 Building Code can be applied provincially. The climatic design data provided in this Supplementary Standard are based on weather observations collected by the Atmospheric Enviromnent Service, Enviromnent Canada. The climatic design data have been researched and analyzed for the Canadian Commission on Building and Fire Codes by Enviromnent Canada, and appear at the end of this Supplementary Standard in Table 1.2, Design Data for Selected Locations in Ontario. As it is not practical to list values for all municipalities in Ontario, recommended climatic design values for locations not listed can be obtained by contacting the Atmospheric Enviromnent Service, Enviromnent Canada, 4905 Dufferin Street, Downsview, Ontario M3H 5T4, (416) 739-4365. It should be noted, however, that these recommended values may differ from the values accepted by municipal building authorities based on local experience. The information on seismic hazard in spectral format has been provided by the Geological Survey of Canada of Natural Resources Canada. Information for municipalities not listed may be obtained through the Natural Resources Canada Web site at , or by writing to the Geological Survey of Canada at 7 Observatory Crescent, Ottawa, Ontario KIA OY3, or at P.O. Box 6000, Sidney, B.C. V8L 4B2. General The choice of climatic elements tabulated in this Supplementary Standard and the form in which they are expressed have been dictated largely by the requirements for specific values in several sections of the 2012 Building Code. These elements include the Ground Snow Loads, Wind Pressures, Design Temperatures, Heating Degree-Days, One-Day and IS-Minute Rainfalls, the Annual Total Precipitation values and Seismic Data. The following notes briefly explain the significance of these particular elements in building design, and indicate which weather observations were used and how they were
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