Internal Pressure Coefficient 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%
✖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 as given by ASCE 7 [GC_pt]

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Internal Pressure Coefficient as given by ASCE 7 Solution

STEP 0: Pre-Calculation Summary

Formula Used

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

Variables Used

Internal Pressure Coefficient - Internal Pressure Coefficient refers to the pressure inside a building, perhaps due to flow past or through openings in the structure.
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.
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.

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
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)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

GC_pt = ((q*G*C_ep)-p)/q_i --> ((29.7632788711526*1.2*0.95)-22.1438794801375)/22.3224591533644

Evaluating ... ...

GC_pt = 0.528000000000003

STEP 3: Convert Result to Output's Unit

0.528000000000003 --> No Conversion Required

FINAL ANSWER

0.528000000000003 ≈ 0.528 <-- Internal Pressure Coefficient

(Calculation completed in 00.020 seconds)

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Created by Mridul Sharma

Indian Institute of Information Technology (IIIT), Bhopal

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Birsa Institute of Technology (BIT), Sindri

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< 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

Internal Pressure Coefficient as given by ASCE 7 Formula

LaTeX Go

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

What is Internal Wind Pressure?

Internal wind pressures are exerted on the underside of ceilings and overhangs to “push” the roof up.The pressure on different surfaces of a building varies according to their exposure and orientation to the wind direction and this is measured by a “pressure coefficient”.

How to Calculate Internal Pressure Coefficient as given by ASCE 7?

Internal Pressure Coefficient as given by ASCE 7 calculator uses Internal Pressure Coefficient = ((Velocity Pressure*Gust Response Factor*External Pressure Coefficient)-Wind Pressure)/Velocity Pressure at Point to calculate the Internal Pressure Coefficient, The Internal Pressure Coefficient as given by ASCE 7 is defined as the pressure difference in the interior point and free stream pressure divided by the free stream dynamic pressure. Internal Pressure Coefficient is denoted by GC_pt symbol.

How to calculate Internal Pressure Coefficient as given by ASCE 7 using this online calculator? To use this online calculator for Internal Pressure Coefficient as given by ASCE 7, enter Velocity Pressure (q), Gust Response Factor (G), External Pressure Coefficient (C_ep), Wind Pressure (p) & Velocity Pressure at Point (q_i) and hit the calculate button. Here is how the Internal Pressure Coefficient as given by ASCE 7 calculation can be explained with given input values -> 0.528 = ((29.7632788711526*1.2*0.95)-22.1438794801375)/22.3224591533644.

FAQ

What is Internal Pressure Coefficient as given by ASCE 7?

The Internal Pressure Coefficient as given by ASCE 7 is defined as the pressure difference in the interior point and free stream pressure divided by the free stream dynamic pressure and is represented as GC_pt = ((q*G*C_ep)-p)/q_i or Internal Pressure Coefficient = ((Velocity Pressure*Gust Response Factor*External Pressure Coefficient)-Wind Pressure)/Velocity Pressure at Point. 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, 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.

How to calculate Internal Pressure Coefficient as given by ASCE 7?

The Internal Pressure Coefficient as given by ASCE 7 is defined as the pressure difference in the interior point and free stream pressure divided by the free stream dynamic pressure is calculated using Internal Pressure Coefficient = ((Velocity Pressure*Gust Response Factor*External Pressure Coefficient)-Wind Pressure)/Velocity Pressure at Point. To calculate Internal Pressure Coefficient as given by ASCE 7, you need Velocity Pressure (q), Gust Response Factor (G), External Pressure Coefficient (C_ep), Wind Pressure (p) & Velocity Pressure at Point (q_i). With our tool, you need to enter the respective value for Velocity Pressure, Gust Response Factor, External Pressure Coefficient, Wind Pressure & Velocity Pressure at Point and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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