Quick Answer
Calculate Air Permeability to Airtightness Class Converter
Calculator
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Find Engineering Solutions →Result Interpretation
Air Permeability to Airtightness Class Converter calculator computes Airtightness class in dimensionless using the defined engineering formula and the input values provided. Airtightness class is expressed in dimensionless. No universal acceptance threshold is defined by this calculator.
Worked Example
Verified calculation
Given:
- Air permeability at 50 Pa = 10
Expected Result:
- Airtightness class = 5
Engineering Interpretation:
Under the given input conditions, the calculated result is: Airtightness class = 5 dimensionless.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.
Formula / Method
airtightness class = floor(6 - log(air permeability at 50 pa) / log(10))Formula family: formula_buildingphysics_air_permeability_to_airtightness_class_converter
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| q50 | Air permeability at 50 Pa | INPUT | Air permeability at 50 Pa |
| airtightness_class | Airtightness class | OUTPUT | Airtightness class |
Calculation Steps
- Enter the air permeability at 50 pa in m³/(h·m²).
- Step 1: Compute airtightness class.
- Read the airtightness class (dimensionless) from the results.
Engineering Summary
Calculate Air Permeability to Airtightness Class Converter
Frequently Asked Questions
What does this calculator calculate?
The Air Permeability to Airtightness Class Converter calculator estimates Airtightness class based on the input parameters you provide
Why is air permeability at 50 pa important in this calculation?
air permeability at 50 pa is used directly in the calculation of airtightness class. Its effect on the result depends on the complete formula and the values of the other inputs.. When you enter air permeability at 50 pa in m³/(h·m²), the calculator uses it in the engineering formula to compute the output
How should I interpret the result airtightness class?
The calculator outputs airtightness class in dimensionless. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Air permeability at 50 Pa (m³/(h·m²)). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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