From Everything To The Very Thing. Use these two tables for roof rafters with a slope of 3 in 12 or less.
Specified Snow Load 1 The specified load S due to snow and associated rain accumulation on a roof or any other building surface subject to snow accumulation shall be calculated from the formula S I s S s C b C w C s C a S r where I s importance factor for snow load as provided in Table 4162.
Ontario snow load table. Site designed and maintained by York Digital Solutions Inc. Ad Book your Hotel in Ontario online. 266 73 Roof Snow Load 20 kPa.
Ad Book your Hotel in Ontario online. Looking For Great Deals On Load. One alternative to using the Zone map found below would be to calculate the ground snow load manually using the following calculation for elevations between 110 metres and 290 metres and rounding to one decimal place.
2010 Ground Snow Load Table for Ontario. 2010 Ground Snow Load Table for Quebec. The flat roof snow load is calculated using formula 73-1.
Ground Snow Load Values for Ontario and Quebec. Looking For Great Deals On Load. Flat-roof snow load P f.
Ad Get Load With Fast And Free Shipping For Many Items On eBay. Snow load importance. 270 74 Roof Snow Load 25 kPa134.
Find this in your local library or go to the Building Department. If you are looking for technical specifications for the dead and live snow loads on roof structures you will have to visit your local citytown hall and get access to your provinces Building Codes. 71 Roof Snow Load 10 kPa.
If your code book says your snow load is 40 psf then you use the 40 psf live load rafter table. For all buildings which are not designed using Part 9 of the Ontario Building Code use Part 4 of the Ontario Building Code to calculate the required design snow load. 274 75 Roof Snow Load 30 kPa.
The snow load is treated as a live load when you use AWCs tables. Return to top. This information is found in the code book.
The snow load that is applied to our structure is not the ground snow load but in most cases the flat roof snow load. Ad Get Load With Fast And Free Shipping For Many Items On eBay. 278 Glued-Laminated Lintels Over Large Openings 81 Roof Snow Load 10 to 30 kPa.
The fact that snow loads only act part of the year has been used to create the rafter tables. S C b S s S r. For example in the rafter span table below the highlighted cell in the 40 Live Load table indicates that 2 x 8 Southern Yellow Pine joists that have a grade of 2 that are spaced 24 apart can have a maximum span of 10 feet - 3 inches 10-3 if designing for a live load of 40 lbsft 2.
Other considerations for sloped roofs can be found throughout Chapter 7 of ASCE 7-10. GROUND SNOW AND RAIN LOADS Ground Snow Load Rain Load FOR THE PROVINCE OF ONTARIO AS TABULATED IN APPENDIX C OF NBC-1995 Name of Location Kapuskasing 260 5429 030 626 Kemptville 210 4385 040 835 Kenora 210 4385 040 835 Killaloe 250 5220 040 835 Kincardine 240 5011 040 835 Kingston 190 3967 040 835 Kinmount 250 5220 040 835. You should find a table with design criteria of roofs for the expected snow loads in your area.
262 72 Roof Snow Load 15 kPa. You must determine the snow load for your region. The ground snow load P g shall be indicated.
Thunder Bay has a snow load of 27kPa. Snow exposure factor C e. The snow load for calculating roof load is found in the Building Code.
The Ontario Building Code Specified Snow Load 4162. Specified Snow Loads 1 Except as provided in Sentences 2 and 3 specified snow loads shall be not less than those calculated using the following formula. The Ontario Building Code Specified Snow Loads 9422.
For you it is found in Part 2 of the Ontario Building Code Table 2511. From Everything To The Very Thing. In areas where the ground snow load P g exceeds 10 pounds per square foot psf 0479 kNm 2 the following additional information shall also be provided regardless of whether snow loads govern the design of the roof.
Where S specified snow load C b basic snow load roof factor which is 045 where the entire width of a roof does not exceed 43 m and 055 for all other roofs. Posted at December 21 2014 in Technical. User Values British Columbia Alberta Saskatchewan Manitoba Ontario Quebec New Brunswick Nova Scotia Prince Edward Island Newfoundland Yukon Northwest Territories Nunavut.
Alberta Snow Loads Confirm exact snowloads with your Alberta Truss Representative CityTown GSL psf Airdrie 251 Athabasca 313 Banff 752 Barrhead 355 Bonnyville 397 Brooks 251 Calgary 230 Camrose 418 Canmore 731 Cardston 313 Cold Lake 355 Drayton Valley 418 Drumheller 251 Edmonton 355 Edson 439 Fairview 543. In our case lets assume that our structure has a flat roof roof slope 5.