Reference Information

Climatic Data and Snow Load


  • Dead load is the weight of all permanent structural and non-structural components of a building.
  • Live load is the weight of snow, rain, wind and/or earthquakes and those weights due to occupancy.

Climate Zones Map

RDFFG BC Building Code Climate Zones map. There is a map of the Regional District of Fraser-Fort George indicating the different climate zones for the region.


Design temperatures

January 1%-32 C
January 2.5%-29 C
July 2.5% Drybulb29 C
July 2.5% Wetbulb18 C
degree days below18 C
15 min rain13 mm
one day rain, 1/5054 mm
annual rain475 mm
moisture index64
annual total precipitation650 mm
driving rain wind pressure (Pa) 1/560

Snow Load 1/50

rain load (Sr) (kPa)0.2
ground snow load (Ss) (kPa)4.3

Hourly wind pressure

probability 1/10 (kPa)0.27
probability 1/50 (kPa)0.35

Seismic data

Sa (0.2)0.27
Sa (0.5)0.16
Sa (1.0)0.076
Sa (2.0)0.076

Radon rea

soil gas rough in required1

Required NAFS fenestration performance of windows and doors in Part 9 buildings

water resistance140

Frost protection

  • the bottom of footings must be 4 ft (1.22 m) below finish grade

The climatic data provided does not apply to any structures constructed in or around the ski facilities at Azu Mountain, or any structures constructed in an area that a building inspector considers to be beyond the parameters outlined.

Structures listed above require a registered professional to provide design and plan certification and field review by means of letters of assurance in the form of Schedules referred to in the BC Building Code.

Other information

BC Building Code 

Regional District of Fraser-Fort George Building Bylaw No. 3239, 2021