Snow Load Calculator

Calculate the minimum snow load in accordance with the National Building Code of Canada (NBCC)

Code:
CA flagNBCC
Ss(kPa)

Ground snow load

Constraints
min: 0step: 0.1
Sr(kPa)

Rain load

Constraints
min: 0step: 0.1
Cw

Wind exposure factor

Constraints
min: 0step: 0.1
Ca

Accumulation factor

Constraints
min: 0step: 0.1
Lr(m)

Roof length (longer dimension)

Constraints
min: 1step: 1
Wr(m)

Roof width (shorter dimension)

Constraints
min: 1step: 1
slope(deg)

Roof slope

Constraints
min: 0max: 90step: 1

Calculation Steps:

    Determine required variables
    • Is,ULS = 1 (Normal Importance)
    • Is,SLS = 0.9
    • lc

      Characteristic roof length

      m
    • Cb

      Basic roof snow load factor

    • Cs

      Slope factor

    Determine specified snow load (cl. 4.1.6.2)
    • S

      Specified snow load (ULS)

      kPa
    • Ssls

      Specified snow load (SLS)

      kPa
    User Notes: