Water Penetration Test Calculator

Test pressure from building height and wind zone.

Building height (m)

Basic wind speed (m/s)

Exposure category (1-3)

Risk category (1-4)

Test area (m²)

Tab to move between fields

Design wind pressure (Pa)

1,830

Static test pressure (Pa)

439

C&C interior zone (Pa)2,196

C&C corner zone (Pa)3,293

Field spray pressure (Pa)439

Kz factor1.41

Spray flow rate (L/hr)510

Total water for test (L)128

Dynamic Test Pressure439.12

Spray Flow GPM2.25

Performance GradeLC (Light Commercial)

How to Use This Calculator

Enter the curtain wall area under test and the test pressure in psf (ASTM E1105 or AAMA 501.1).
Set the water application rate in gallons per hour per square foot.
Input test duration in minutes.
Review the total water volume applied and pass/fail criteria.
Document test results by unit location for the project submittal record.

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