Velocity Pressure as given by ASCE 7 Calculator

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

⎘ Copy

👎

Formula

LaTeX

Reset

👍

Download Roof Live Loads Formulas PDF PDF Image

Velocity Pressure as given by ASCE 7 Solution

STEP 0: Pre-Calculation Summary

Formula Used

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

Variables Used

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.
Wind Pressure - (Measured in Pascal) - Wind Pressure is the pressure due to the wind.
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.
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.

STEP 1: Convert Input(s) to Base Unit

Wind Pressure: 14.88 Poundal per Square Foot --> 22.1438794801375 Pascal (Check conversion here)
Velocity Pressure at Point: 15 Poundal per Square Foot --> 22.3224591533644 Pascal (Check conversion here)
Internal Pressure Coefficient: 0.91 --> No Conversion Required
Gust Response Factor: 1.2 --> No Conversion Required
External Pressure Coefficient: 0.95 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

q = (p+q_i*GC_pt)/(G*C_ep) --> (22.1438794801375+22.3224591533644*0.91)/(1.2*0.95)

Evaluating ... ...

q = 37.2432607979817

STEP 3: Convert Result to Output's Unit

37.2432607979817 Pascal -->25.0263157894736 Poundal per Square Foot (Check conversion here)

FINAL ANSWER

25.0263157894736 ≈ 25.02632 Poundal per Square Foot <-- Velocity Pressure

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Civil » Structural Engineering » Roof Live Loads » Wind Loads » Velocity 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 Rithik Agrawal

National Institute of Technology Karnataka (NITK), Surathkal

Rithik Agrawal has verified this Calculator and 400+ more calculators!

< Wind Loads Calculators

Gust Response Factor using Wind Pressure

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

Pressure Coefficient using Wind Pressure

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

Velocity Pressure using Wind Pressure

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

Equivalent Static Design Wind Pressure

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

Velocity Pressure as given by ASCE 7 Formula

LaTeX Go

Velocity Pressure = (Wind Pressure+Velocity Pressure at Point*Internal Pressure Coefficient)/(Gust Response Factor*External Pressure Coefficient)
q = (p+q_i*GC_pt)/(G*C_ep)

What is Velocity Pressure?

In a moving fluid, velocity pressure (VP) is the pressure that would induce an equivalent velocity if applied to move the same fluid through an orifice, so that all pressure energy is converted into kinetic energy. Velocity pressure is a function of air density and velocity. VP will only be exerted in the direction of airflow and is always positive.

How to Calculate Velocity Pressure as given by ASCE 7?

Velocity Pressure as given by ASCE 7 calculator uses Velocity Pressure = (Wind Pressure+Velocity Pressure at Point*Internal Pressure Coefficient)/(Gust Response Factor*External Pressure Coefficient) to calculate the Velocity Pressure, The Velocity Pressure as given by ASCE 7 is defined as the velocity pressure as per ASCE 7 Method II norms considering wind pressure, external and internal pressure coefficients. Velocity Pressure is denoted by q symbol.

How to calculate Velocity Pressure as given by ASCE 7 using this online calculator? To use this online calculator for Velocity Pressure as given by ASCE 7, enter Wind Pressure (p), Velocity Pressure at Point (q_i), Internal Pressure Coefficient (GC_pt), Gust Response Factor (G) & External Pressure Coefficient (C_ep) and hit the calculate button. Here is how the Velocity Pressure as given by ASCE 7 calculation can be explained with given input values -> 16.72849 = (22.1438794801375+22.3224591533644*0.91)/(1.2*0.95).

FAQ

What is Velocity Pressure as given by ASCE 7?

The Velocity Pressure as given by ASCE 7 is defined as the velocity pressure as per ASCE 7 Method II norms considering wind pressure, external and internal pressure coefficients and is represented as q = (p+q_i*GC_pt)/(G*C_ep) or Velocity Pressure = (Wind Pressure+Velocity Pressure at Point*Internal Pressure Coefficient)/(Gust Response Factor*External Pressure Coefficient). Wind Pressure is the pressure due to the wind, 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, The Gust Response Factor is to account for fluctuations in wind speed & The External Pressure Coefficient is the coefficient for the external pressure.

How to calculate Velocity Pressure as given by ASCE 7?

The Velocity Pressure as given by ASCE 7 is defined as the velocity pressure as per ASCE 7 Method II norms considering wind pressure, external and internal pressure coefficients is calculated using Velocity Pressure = (Wind Pressure+Velocity Pressure at Point*Internal Pressure Coefficient)/(Gust Response Factor*External Pressure Coefficient). To calculate Velocity Pressure as given by ASCE 7, you need Wind Pressure (p), Velocity Pressure at Point (q_i), Internal Pressure Coefficient (GC_pt), Gust Response Factor (G) & External Pressure Coefficient (C_ep). With our tool, you need to enter the respective value for Wind Pressure, Velocity Pressure at Point, Internal Pressure Coefficient, Gust Response Factor & External 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 Velocity Pressure?

In this formula, Velocity Pressure uses Wind Pressure, Velocity Pressure at Point, Internal Pressure Coefficient, Gust Response Factor & External Pressure Coefficient. We can use 2 other way(s) to calculate the same, which is/are as follows -

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

Home

FREE PDFs

🔍 Search