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Roof Snow Load Formula

GoRoof Snow Load given Roof Type Formula

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Roof Snow Load is the downward force on a building's roof by the weight of accumulated snow and ice. Check FAQs

P f = 0.7 \cdot C e \cdot C t \cdot I \cdot P g

P_f - Roof Snow Load?C_e - Wind Exposure Factor?C_t - Thermal Effects Factor?I - Importance Factor for End Use?P_g - Ground Snow Load?

Roof Snow Load Example

With values

With units

Only example

Here is how the Roof Snow Load equation looks like with Values.

Here is how the Roof Snow Load equation looks like with Units.

Here is how the Roof Snow Load equation looks like.

9.7574 = 0.7 \cdot 0.8 \cdot 1.21 \cdot 0.8 \cdot 18

9.7574psf = 0.7 \cdot 0.8 \cdot 1.21 \cdot 0.8 \cdot 18psf

9.7574 = 0.7 \cdot 0.8 \cdot 1.21 \cdot 0.8 \cdot 18

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Roof Snow Load Solution

Follow our step by step solution on how to calculate Roof Snow Load?

FIRST Step Consider the formula

P f = 0.7 \cdot C e \cdot C t \cdot I \cdot P g

Next Step Substitute values of Variables

∴

P f = 0.7 \cdot 0.8 \cdot 1.21 \cdot 0.8 \cdot 18psf

Next Step Convert Units

∴

P f = 0.7 \cdot 0.8 \cdot 1.21 \cdot 0.8 \cdot 861.8447Pa

Next Step Prepare to Evaluate

∴

P f = 0.7 \cdot 0.8 \cdot 1.21 \cdot 0.8 \cdot 861.8447

Next Step Evaluate

∴

P f = 467.188754180749Pa

Next Step Convert to Output's Unit

∴

P f = 9.75744psf

LAST Step Rounding Answer

∴

P f = 9.7574psf

Roof Snow Load Formula Elements

Variables

Roof Snow Load

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

Symbol: P_f

Measurement: PressureUnit: psf

Note: Value should be greater than 0.

Formulas to find Roof Snow Load

Wind Exposure Factor

Wind Exposure Factor is the factor of effect on exposure to wind.

Symbol: C_e

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Wind Exposure Factor

Thermal Effects Factor

The thermal Effects Factor is the measure of the effect of exposure to heat.

Symbol: C_t

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Thermal Effects Factor

Importance Factor for End Use

Importance Factor for End Use is the factor whose value lies in range 0.8 to 1.2.

Symbol: I

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Importance Factor for End Use

Ground Snow Load

Ground Snow Load is used in the determination of the design roof snow load of a site.

Symbol: P_g

Measurement: PressureUnit: psf

Note: Value should be greater than 0.

Formulas to find Ground Snow Load

Other Formulas to find Roof Snow Load

Go Roof Snow Load given Roof Type

P f = I \cdot C \cdot P g

Other formulas in Snow Loads category

Go Wind Exposure Factor given Roof Snow Load

C e = \frac{P f}{0.7 \cdot C t \cdot I \cdot P g}

Go Thermal Effects factor given Roof Snow Load

C t = \frac{P f}{0.7 \cdot C e \cdot I \cdot P g}

Go Importance Factor for End Use using Roof Snow Load

I = \frac{P f}{0.7 \cdot C e \cdot C t \cdot P g}

Go Ground Snow Load given Roof Snow Load

P g = \frac{P f}{0.7 \cdot C e \cdot C t \cdot I}

How to Evaluate Roof Snow Load?

Roof Snow Load evaluator uses Roof Snow Load = 0.7*Wind Exposure Factor*Thermal Effects Factor*Importance Factor for End Use*Ground Snow Load to evaluate 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 evaluate Roof Snow Load using this online evaluator? To use this online evaluator 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.

FAQs on Roof Snow Load

What is the formula to find Roof Snow Load?

The formula of Roof Snow Load is expressed as Roof Snow Load = 0.7*Wind Exposure Factor*Thermal Effects Factor*Importance Factor for End Use*Ground Snow Load. Here is an example- 0.202104 = 0.7*0.8*1.21*0.8*861.84466163804.

How to calculate Roof Snow Load?

With Wind Exposure Factor (C_e), Thermal Effects Factor (C_t), Importance Factor for End Use (I) & Ground Snow Load (P_g) we can find Roof Snow Load using the formula - Roof Snow Load = 0.7*Wind Exposure Factor*Thermal Effects Factor*Importance Factor for End Use*Ground Snow Load.

What are the other ways to Calculate Roof Snow Load?

Here are the different ways to Calculate Roof Snow Load-

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

Can the Roof Snow Load be negative?

No, the Roof Snow Load, measured in Pressure cannot be negative.

Which unit is used to measure Roof Snow Load?

Roof Snow Load is usually measured using the Pounds per Square Foot[psf] for Pressure. Pascal[psf], Kilopascal[psf], Bar[psf] are the few other units in which Roof Snow Load can be measured.

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Roof Snow Load Formula

​GoRoof Snow Load given Roof Type Formula

Roof Snow Load Example

Roof Snow Load Solution

Roof Snow Load Formula Elements

Other Formulas to find Roof Snow Load

Other formulas in Snow Loads category

How to Evaluate Roof Snow Load?

FAQs on Roof Snow Load

Variable Name

GoRoof Snow Load given Roof Type Formula