Water Infiltration Testing Calculator

Test procedure from wall type and ASTM standard.

Wall area per test (sq ft)

Number of test locations

Building height (ft)

Method (1=E1105, 2=501.2, 3=502)

Wind zone (1=low to 4=hurricane)

Test duration (minutes)

Tab to move between fields

Test pressure (PSF)

Test pressure (Pa)1,197

Water per test (gallons)50

Total water needed (gallons)250

Total test time (hours)4.6

Spray rack sections2

Estimated testing cost ($)$1,729.00

Test Pressures0, 12.5, 25

Spray DescriptionAAMA 501.2 spray rack

Pump Required0

Nozzles Needed0

How to Use This Calculator

Enter Wall Area per Test (sq ft) — the area of each window, door, or curtain wall assembly being tested.
Set Number of Test Locations based on ASTM requirements: include representative and worst-case conditions.
Input Building Height (ft) — taller buildings experience higher wind-driven rain pressures on upper floors.
Select Test Method (1=ASTM E1105, 2=AAMA 501.2 spray rack, 3=AAMA 502 hose nozzle).
Choose Wind Zone (1=low to 4=hurricane) to set the design test pressure per local building code.
Review Test Pressure (PSF), Water per Test (gallons), Total Test Time (hrs), and Estimated Testing Cost for project planning.

What each input means

Wall area per test (sq ft): Area of wall covered by each test location (typically one window/door assembly).
Number of test locations: Total test locations. ASTM requires testing at representative and worst-case locations.
Building height (ft): Total building height. Higher floors experience greater wind pressure.
Method (1=E1105, 2=501.2, 3=502): 1 = ASTM E1105 (pressure chamber). 2 = AAMA 501.2 (spray rack, most common). 3 = AAMA 502 (hose nozzle, quick check).
Wind zone (1=low to 4=hurricane): 1 = Low (90 mph). 2 = Moderate (110 mph). 3 = High (130 mph). 4 = Hurricane (150+ mph).
Test duration (minutes): Duration of water spray per pressure stage. Standard is 15 minutes.

Test pressure (PSF): Design wind pressure for testing based on wind zone.
Test pressure (Pa): Test pressure in Pascals for international reference.
Water per test (gallons): Water consumption per test location per test cycle.
Total water needed (gallons): Total water required for all test locations.
Total test time (hours): Total time including setup, testing, and observation for all locations.
Spray rack sections: Number of spray rack sections needed (E1105/501.2 methods only).
Estimated testing cost ($): Labor (2 technicians), equipment rental, and report preparation.

Identify Input Parameters
4 parameters
Wall area per test (sq ft) = 40, Number of test locations = 5, Building height (ft) = 60, Method (1=E1105, 2=501.2, 3=502) = 2 = 6 input(s) provided
Calculate Test pressure
25 = 25
Calculate Test pressure
Test pressure = designPressure * 47.88
1197 = 1197
Calculate Water per test
Water per test = sprayRateGalPerHrPerSqFt * wallAreaPerTest * (testDurationMin / 60)
50 = 50