Basic Wind given Velocity Pressure 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%
✖Velocity Exposure Coefficient is evaluated at some height z.ⓘ Velocity Exposure Coefficient [K_z]			+10% -10%
✖Topographic Factor are also called indirect factors as they influence the growth and development of organisms by bringing variations in climatic factors.ⓘ Topographic Factor [K_zt]			+10% -10%
✖Wind Directionality Factor reflects the fact that the climatologically and aerodynamically or dynamically most unfavourable wind directions typically do not coincide.ⓘ Wind Directionality Factor [K_d]			+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%

✖Basic Wind Speed is the wind speed corresponding to a 3-s gust speed at 33 ft above the ground in Exposure C.ⓘ Basic Wind given Velocity Pressure [V_B]

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Formula

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Basic Wind given Velocity Pressure

Formula

`"V"_{"B"} = sqrt("q"/(0.00256*"K"_{"z"}*"K"_{"zt"}*"K"_{"d"}*"I"))`

Example

`"29.6107m/s"=sqrt("20pdl/ft²"/(0.00256*"0.85"*"25"*"0.78"*"0.8"))`

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Basic Wind given Velocity Pressure Solution

STEP 0: Pre-Calculation Summary

Formula Used

Basic Wind Speed = sqrt(Velocity Pressure/(0.00256*Velocity Exposure Coefficient*Topographic Factor*Wind Directionality Factor*Importance Factor for End Use))
V_B = sqrt(q/(0.00256*K_z*K_zt*K_d*I))
This formula uses 1 Functions, 6 Variables

Functions Used

sqrt - A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number., sqrt(Number)

Variables Used

Basic Wind Speed - (Measured in Meter per Second) - Basic Wind Speed is the wind speed corresponding to a 3-s gust speed at 33 ft above the ground in Exposure C.
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.
Velocity Exposure Coefficient - Velocity Exposure Coefficient is evaluated at some height z.
Topographic Factor - Topographic Factor are also called indirect factors as they influence the growth and development of organisms by bringing variations in climatic factors.
Wind Directionality Factor - Wind Directionality Factor reflects the fact that the climatologically and aerodynamically or dynamically most unfavourable wind directions typically do not coincide.
Importance Factor for End Use - Importance Factor for End Use is the factor whose value lies in range 0.8 to 1.2.

STEP 1: Convert Input(s) to Base Unit

Velocity Pressure: 20 Poundal per Square Foot --> 29.7632788711526 Pascal (Check conversion here)
Velocity Exposure Coefficient: 0.85 --> No Conversion Required
Topographic Factor: 25 --> No Conversion Required
Wind Directionality Factor: 0.78 --> No Conversion Required
Importance Factor for End Use: 0.8 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

V_B = sqrt(q/(0.00256*K_z*K_zt*K_d*I)) --> sqrt(29.7632788711526/(0.00256*0.85*25*0.78*0.8))

Evaluating ... ...

V_B = 29.6106978052379

STEP 3: Convert Result to Output's Unit

29.6106978052379 Meter per Second --> No Conversion Required

FINAL ANSWER

29.6106978052379 ≈ 29.6107 Meter per Second <-- Basic Wind Speed

(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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< 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

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)

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)

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

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)

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

Basic Wind given Velocity Pressure Formula

Basic Wind Speed = sqrt(Velocity Pressure/(0.00256*Velocity Exposure Coefficient*Topographic Factor*Wind Directionality Factor*Importance Factor for End Use))
V_B = sqrt(q/(0.00256*K_z*K_zt*K_d*I))

What is Velocity Pressure?

Velocity pressure is required to accelerate air from zero velocity to some velocity (V) and is proportional to the kinetic energy of the air stream.

How to Calculate Basic Wind given Velocity Pressure?

Basic Wind given Velocity Pressure calculator uses Basic Wind Speed = sqrt(Velocity Pressure/(0.00256*Velocity Exposure Coefficient*Topographic Factor*Wind Directionality Factor*Importance Factor for End Use)) to calculate the Basic Wind Speed, The Basic Wind given Velocity Pressure is defined as the basic wind when we have a prior info velocity pressure and other factors affecting it like topographic factor, importance factor etc. Basic Wind Speed is denoted by V_B symbol.

How to calculate Basic Wind given Velocity Pressure using this online calculator? To use this online calculator for Basic Wind given Velocity Pressure, enter Velocity Pressure (q), Velocity Exposure Coefficient (K_z), Topographic Factor (K_zt), Wind Directionality Factor (K_d) & Importance Factor for End Use (I) and hit the calculate button. Here is how the Basic Wind given Velocity Pressure calculation can be explained with given input values -> 29.6107 = sqrt(29.7632788711526/(0.00256*0.85*25*0.78*0.8)).

FAQ

What is Basic Wind given Velocity Pressure?

The Basic Wind given Velocity Pressure is defined as the basic wind when we have a prior info velocity pressure and other factors affecting it like topographic factor, importance factor etc and is represented as V_B = sqrt(q/(0.00256*K_z*K_zt*K_d*I)) or Basic Wind Speed = sqrt(Velocity Pressure/(0.00256*Velocity Exposure Coefficient*Topographic Factor*Wind Directionality Factor*Importance Factor for End Use)). 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 Exposure Coefficient is evaluated at some height z, Topographic Factor are also called indirect factors as they influence the growth and development of organisms by bringing variations in climatic factors, Wind Directionality Factor reflects the fact that the climatologically and aerodynamically or dynamically most unfavourable wind directions typically do not coincide & Importance Factor for End Use is the factor whose value lies in range 0.8 to 1.2.

How to calculate Basic Wind given Velocity Pressure?

The Basic Wind given Velocity Pressure is defined as the basic wind when we have a prior info velocity pressure and other factors affecting it like topographic factor, importance factor etc is calculated using Basic Wind Speed = sqrt(Velocity Pressure/(0.00256*Velocity Exposure Coefficient*Topographic Factor*Wind Directionality Factor*Importance Factor for End Use)). To calculate Basic Wind given Velocity Pressure, you need Velocity Pressure (q), Velocity Exposure Coefficient (K_z), Topographic Factor (K_zt), Wind Directionality Factor (K_d) & Importance Factor for End Use (I). With our tool, you need to enter the respective value for Velocity Pressure, Velocity Exposure Coefficient, Topographic Factor, Wind Directionality Factor & Importance Factor for End Use 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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