Roof Snow Load Calculator

✖Wind Exposure Factor is the factor of effect on exposure to wind.ⓘ Wind Exposure Factor [C_e]			+10% -10%
✖The thermal Effects Factor is the measure of the effect of exposure to heat.ⓘ Thermal Effects Factor [C_t]			+10% -10%
✖Importance Factor for End Use is the factor whose value lies in range 0.8 to 1.2.ⓘ Importance Factor for End Use [I]			+10% -10%
✖Ground Snow Load is used in the determination of the design roof snow load of a site.ⓘ Ground Snow Load [P_g]			+10% -10%

✖Roof Snow Load is the downward force on a building's roof by the weight of accumulated snow and ice.ⓘ Roof Snow Load [P_f]

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Formula

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Roof Snow Load

Formula

`"P"_{"f"} = 0.7*"C"_{"e"}*"C"_{"t"}*"I"*"P"_{"g"}`

Example

`"9.75744psf"=0.7*"0.80"*"1.21"*"0.8"*"18psf"`

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Download Roof Live Loads Formulas PDF

Roof Snow Load Solution

STEP 0: Pre-Calculation Summary

Formula Used

Roof Snow Load = 0.7*Wind Exposure Factor*Thermal Effects Factor*Importance Factor for End Use*Ground Snow Load
P_f = 0.7*C_e*C_t*I*P_g
This formula uses 5 Variables

Variables Used

Roof Snow Load - (Measured in Pascal) - Roof Snow Load is the downward force on a building's roof by the weight of accumulated snow and ice.
Wind Exposure Factor - Wind Exposure Factor is the factor of effect on exposure to wind.
Thermal Effects Factor - The thermal Effects Factor is the measure of the effect of exposure to heat.
Importance Factor for End Use - Importance Factor for End Use is the factor whose value lies in range 0.8 to 1.2.
Ground Snow Load - (Measured in Pascal) - Ground Snow Load is used in the determination of the design roof snow load of a site.

STEP 1: Convert Input(s) to Base Unit

Wind Exposure Factor: 0.8 --> No Conversion Required
Thermal Effects Factor: 1.21 --> No Conversion Required
Importance Factor for End Use: 0.8 --> No Conversion Required
Ground Snow Load: 18 Pounds per Square Foot --> 861.84466163804 Pascal (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P_f = 0.7*C_e*C_t*I*P_g --> 0.7*0.8*1.21*0.8*861.84466163804

Evaluating ... ...

P_f = 467.188754180749

STEP 3: Convert Result to Output's Unit

467.188754180749 Pascal -->9.75744 Pounds per Square Foot (Check conversion here)

FINAL ANSWER

9.75744 Pounds per Square Foot <-- Roof Snow Load

(Calculation completed in 00.004 seconds)

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Created by Mridul Sharma

Indian Institute of Information Technology (IIIT), Bhopal

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Coorg Institute of Technology (CIT), Coorg

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< 8 Snow Loads Calculators

Importance Factor for End Use using Roof Snow Load

Go Importance Factor for End Use = Roof Snow Load/(0.7*Wind Exposure Factor*Thermal Effects Factor*Ground Snow Load)

Thermal Effects factor given Roof Snow Load

Go Thermal Effects Factor = Roof Snow Load/(0.7*Wind Exposure Factor*Importance Factor for End Use*Ground Snow Load)

Wind Exposure Factor given Roof Snow Load

Go Wind Exposure Factor = Roof Snow Load/(0.7*Thermal Effects Factor*Importance Factor for End Use*Ground Snow Load)

Ground Snow Load given Roof Snow Load

Go Ground Snow Load = Roof Snow Load/(0.7*Wind Exposure Factor*Thermal Effects Factor*Importance Factor for End Use)

Roof Snow Load

Go Roof Snow Load = 0.7*Wind Exposure Factor*Thermal Effects Factor*Importance Factor for End Use*Ground Snow Load

Importance Factor using Roof Type

Go Importance Factor for End Use = Roof Snow Load/(Roof Type*Ground Snow Load)

Ground Snow Load using Roof Type

Go Ground Snow Load = Roof Snow Load/(Roof Type*Importance Factor for End Use)

Roof Snow Load given Roof Type

Go Roof Snow Load = Importance Factor for End Use*Roof Type*Ground Snow Load

Roof Snow Load Formula

Roof Snow Load = 0.7*Wind Exposure Factor*Thermal Effects Factor*Importance Factor for End Use*Ground Snow Load
P_f = 0.7*C_e*C_t*I*P_g

What is Snow Load?

Snow Load is the downward force on a building's roof by the weight of accumulated snow and ice. The roof or the entire structure can fail if the snow load exceeds the weight the building was designed to shoulder. Or if the building was poorly designed or constructed.

How to Calculate Roof Snow Load?

Roof Snow Load calculator uses Roof Snow Load = 0.7*Wind Exposure Factor*Thermal Effects Factor*Importance Factor for End Use*Ground Snow Load to calculate the Roof Snow Load, The Roof Snow Load is defined as the downward force on a building's roof by the weight of accumulated snow and ice. Roof Snow Load is denoted by P_f symbol.

How to calculate Roof Snow Load using this online calculator? To use this online calculator for Roof Snow Load, enter Wind Exposure Factor (C_e), Thermal Effects Factor (C_t), Importance Factor for End Use (I) & Ground Snow Load (P_g) and hit the calculate button. Here is how the Roof Snow Load calculation can be explained with given input values -> 0.202104 = 0.7*0.8*1.21*0.8*861.84466163804.

FAQ

What is Roof Snow Load?

The Roof Snow Load is defined as the downward force on a building's roof by the weight of accumulated snow and ice and is represented as P_f = 0.7*C_e*C_t*I*P_g or Roof Snow Load = 0.7*Wind Exposure Factor*Thermal Effects Factor*Importance Factor for End Use*Ground Snow Load. Wind Exposure Factor is the factor of effect on exposure to wind, The thermal Effects Factor is the measure of the effect of exposure to heat, Importance Factor for End Use is the factor whose value lies in range 0.8 to 1.2 & Ground Snow Load is used in the determination of the design roof snow load of a site.

How to calculate Roof Snow Load?

The Roof Snow Load is defined as the downward force on a building's roof by the weight of accumulated snow and ice is calculated using Roof Snow Load = 0.7*Wind Exposure Factor*Thermal Effects Factor*Importance Factor for End Use*Ground Snow Load. To calculate Roof Snow Load, you need Wind Exposure Factor (C_e), Thermal Effects Factor (C_t), Importance Factor for End Use (I) & Ground Snow Load (P_g). With our tool, you need to enter the respective value for Wind Exposure Factor, Thermal Effects Factor, Importance Factor for End Use & Ground Snow Load and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Roof Snow Load?

In this formula, Roof Snow Load uses Wind Exposure Factor, Thermal Effects Factor, Importance Factor for End Use & Ground Snow Load. We can use 1 other way(s) to calculate the same, which is/are as follows -

Roof Snow Load = Importance Factor for End Use*Roof Type*Ground Snow Load

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