Wind Pressure as given by ASCE 7 Calculator

✖Velocity Pressure is the pressure required to accelerate air from zero velocity to some velocity and is proportional to the kinetic energy of the air stream.ⓘ Velocity Pressure [q]			+10% -10%
✖The Gust Response Factor is to account for fluctuations in wind speed.ⓘ Gust Response Factor [G]			+10% -10%
✖The External Pressure Coefficient is the coefficient for the external pressure.ⓘ External Pressure Coefficient [C_ep]			+10% -10%
✖Velocity Pressure at Point is the pressure due to the velocity of wind at some point.ⓘ Velocity Pressure at Point [q_i]			+10% -10%
✖Internal Pressure Coefficient refers to the pressure inside a building, perhaps due to flow past or through openings in the structure.ⓘ Internal Pressure Coefficient [GC_pt]			+10% -10%

✖Wind Pressure is the pressure due to the wind.ⓘ Wind Pressure as given by ASCE 7 [p]

⎘ Copy

👎

Formula

✖

Wind Pressure as given by ASCE 7

Formula

`"p" = "q"*"G"*"C"_{"ep"}-"q"_{"i"}*"GC"_{"pt"}`

Example

`"9.15pdl/ft²"="20pdl/ft²"*"1.20"*"0.95"-"15pdl/ft²"*"0.91"`

Calculator

LaTeX

Reset

👍

Download Roof Live Loads Formulas PDF PDF Image

Wind Pressure as given by ASCE 7 Solution

STEP 0: Pre-Calculation Summary

Formula Used

Wind Pressure = Velocity Pressure*Gust Response Factor*External Pressure Coefficient-Velocity Pressure at Point*Internal Pressure Coefficient
p = q*G*C_ep-q_i*GC_pt
This formula uses 6 Variables

Variables Used

Wind Pressure - (Measured in Pascal) - Wind Pressure is the pressure due to the wind.
Velocity Pressure - (Measured in Pascal) - Velocity Pressure is the pressure required to accelerate air from zero velocity to some velocity and is proportional to the kinetic energy of the air stream.
Gust Response Factor - The Gust Response Factor is to account for fluctuations in wind speed.
External Pressure Coefficient - The External Pressure Coefficient is the coefficient for the external pressure.
Velocity Pressure at Point - (Measured in Pascal) - Velocity Pressure at Point is the pressure due to the velocity of wind at some point.
Internal Pressure Coefficient - Internal Pressure Coefficient refers to the pressure inside a building, perhaps due to flow past or through openings in the structure.

STEP 1: Convert Input(s) to Base Unit

Velocity Pressure: 20 Poundal per Square Foot --> 29.7632788711526 Pascal (Check conversion here)
Gust Response Factor: 1.2 --> No Conversion Required
External Pressure Coefficient: 0.95 --> No Conversion Required
Velocity Pressure at Point: 15 Poundal per Square Foot --> 22.3224591533644 Pascal (Check conversion here)
Internal Pressure Coefficient: 0.91 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

p = q*G*C_ep-q_i*GC_pt --> 29.7632788711526*1.2*0.95-22.3224591533644*0.91

Evaluating ... ...

p = 13.6167000835524

STEP 3: Convert Result to Output's Unit

13.6167000835524 Pascal -->9.15000000000003 Poundal per Square Foot (Check conversion here)

FINAL ANSWER

9.15000000000003 ≈ 9.15 Poundal per Square Foot <-- Wind Pressure

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Civil » Structural Engineering » Roof Live Loads » Wind Loads » Wind Pressure as given by ASCE 7

Credits

Created by Mridul Sharma

Indian Institute of Information Technology (IIIT), Bhopal

Mridul Sharma has created this Calculator and 200+ more calculators!

Verified by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

Suraj Kumar has verified this Calculator and 600+ more calculators!

< 16 Wind Loads Calculators

Basic Wind given Velocity Pressure

Go Basic Wind Speed = sqrt(Velocity Pressure/(0.00256*Velocity Exposure Coefficient*Topographic Factor*Wind Directionality Factor*Importance Factor for End Use))

Wind Directionality Factor given Velocity Pressure

Go Wind Directionality Factor = Velocity Pressure/(0.00256*Velocity Exposure Coefficient*Topographic Factor*Importance Factor for End Use*Basic Wind Speed^2)

Topographic Factor given Velocity Pressure

Go Topographic Factor = Velocity Pressure/(0.00256*Velocity Exposure Coefficient*Importance Factor for End Use*Wind Directionality Factor*Basic Wind Speed^2)

Importance Factor given Velocity Pressure

Go Importance Factor for End Use = Velocity Pressure/(0.00256*Velocity Exposure Coefficient*Topographic Factor*Wind Directionality Factor*Basic Wind Speed^2)

Importance Factor using Velocity Pressure

Go Importance Factor for End Use = Velocity Pressure/(0.00256*Velocity Exposure Coefficient*Topographic Factor*Wind Directionality Factor*Basic Wind Speed^2)

Velocity Pressure

Go Velocity Pressure = 0.00256*Velocity Exposure Coefficient*Topographic Factor*Wind Directionality Factor*(Basic Wind Speed^2)*Importance Factor for End Use

Velocity Pressure at given Point as given by ASCE 7

Go Velocity Pressure at Point = ((Velocity Pressure*Gust Response Factor*External Pressure Coefficient)-Wind Pressure)/Internal Pressure Coefficient

External Pressure Coefficient as given by ASCE 7

Go External Pressure Coefficient = (Wind Pressure+Velocity Pressure at Point*Internal Pressure Coefficient)/(Gust Response Factor*Velocity Pressure)

Internal Pressure Coefficient as given by ASCE 7

Go Internal Pressure Coefficient = ((Velocity Pressure*Gust Response Factor*External Pressure Coefficient)-Wind Pressure)/Velocity Pressure at Point

Velocity Pressure as given by ASCE 7

Go Velocity Pressure = (Wind Pressure+Velocity Pressure at Point*Internal Pressure Coefficient)/(Gust Response Factor*External Pressure Coefficient)

Gust Effect Factor as given by ASCE 7

Go Gust Response Factor = (Wind Pressure+Velocity Pressure at Point*Internal Pressure Coefficient)/(Velocity Pressure*External Pressure Coefficient)

Wind Pressure as given by ASCE 7

Go Wind Pressure = Velocity Pressure*Gust Response Factor*External Pressure Coefficient-Velocity Pressure at Point*Internal Pressure Coefficient

Gust Response Factor using Wind Pressure

Go Gust Response Factor = Wind Pressure/(Velocity Pressure*Pressure Coefficient)

Pressure Coefficient using Wind Pressure

Go Pressure Coefficient = Wind Pressure/(Velocity Pressure*Gust Response Factor)

Velocity Pressure using Wind Pressure

Go Velocity Pressure = Wind Pressure/(Gust Response Factor*Pressure Coefficient)

Equivalent Static Design Wind Pressure

Go Wind Pressure = Velocity Pressure*Gust Response Factor*Pressure Coefficient

Wind Pressure as given by ASCE 7 Formula

Wind Pressure = Velocity Pressure*Gust Response Factor*External Pressure Coefficient-Velocity Pressure at Point*Internal Pressure Coefficient
p = q*G*C_ep-q_i*GC_pt

What causes Wind Pressure?

Gases move from high-pressure areas to low-pressure areas. And the bigger the difference between the pressures, the faster the air will move from the high to the low pressure. That rush of air is the wind we experience.

How to Calculate Wind Pressure as given by ASCE 7?

Wind Pressure as given by ASCE 7 calculator uses Wind Pressure = Velocity Pressure*Gust Response Factor*External Pressure Coefficient-Velocity Pressure at Point*Internal Pressure Coefficient to calculate the Wind Pressure, The Wind Pressure as given by ASCE 7 is defined as the design wind pressures for the main wind force-resisting system of buildings of all heights. Wind Pressure is denoted by p symbol.

How to calculate Wind Pressure as given by ASCE 7 using this online calculator? To use this online calculator for Wind Pressure as given by ASCE 7, enter Velocity Pressure (q), Gust Response Factor (G), External Pressure Coefficient (C_ep), Velocity Pressure at Point (q_i) & Internal Pressure Coefficient (GC_pt) and hit the calculate button. Here is how the Wind Pressure as given by ASCE 7 calculation can be explained with given input values -> 6.249311 = 29.7632788711526*1.2*0.95-22.3224591533644*0.91.

FAQ

What is Wind Pressure as given by ASCE 7?

The Wind Pressure as given by ASCE 7 is defined as the design wind pressures for the main wind force-resisting system of buildings of all heights and is represented as p = q*G*C_ep-q_i*GC_pt or Wind Pressure = Velocity Pressure*Gust Response Factor*External Pressure Coefficient-Velocity Pressure at Point*Internal Pressure Coefficient. Velocity Pressure is the pressure required to accelerate air from zero velocity to some velocity and is proportional to the kinetic energy of the air stream, The Gust Response Factor is to account for fluctuations in wind speed, The External Pressure Coefficient is the coefficient for the external pressure, Velocity Pressure at Point is the pressure due to the velocity of wind at some point & Internal Pressure Coefficient refers to the pressure inside a building, perhaps due to flow past or through openings in the structure.

How to calculate Wind Pressure as given by ASCE 7?

The Wind Pressure as given by ASCE 7 is defined as the design wind pressures for the main wind force-resisting system of buildings of all heights is calculated using Wind Pressure = Velocity Pressure*Gust Response Factor*External Pressure Coefficient-Velocity Pressure at Point*Internal Pressure Coefficient. To calculate Wind Pressure as given by ASCE 7, you need Velocity Pressure (q), Gust Response Factor (G), External Pressure Coefficient (C_ep), Velocity Pressure at Point (q_i) & Internal Pressure Coefficient (GC_pt). With our tool, you need to enter the respective value for Velocity Pressure, Gust Response Factor, External Pressure Coefficient, Velocity Pressure at Point & Internal Pressure Coefficient 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 Wind Pressure?

In this formula, Wind Pressure uses Velocity Pressure, Gust Response Factor, External Pressure Coefficient, Velocity Pressure at Point & Internal Pressure Coefficient. We can use 1 other way(s) to calculate the same, which is/are as follows -

Wind Pressure = Velocity Pressure*Gust Response Factor*Pressure Coefficient

Home

FREE PDFs

🔍 Search