CWCT - Testing program
Test 1: Resistance to air leakage
Opening functions were individually tested in stages up to a negative pressure suction of -100 Pa, to simulate negative pressure within the building, followed by positive pulses up to +600 Pa - equivalent to the force of a violent storm.
Test 2: Resistance to static water penetration
The entire screen was exposed to static water pressure with a flow rate of at least 3.4 litres/m²/minute, increasing in stages up to +600 Pa - equivalent to heavy rain in combination with the force of a violent storm.
Test 3: Resistance to wind pressure
A staged suction test of up to -1800 Pa was followed by staged positive pulses up to +1800 Pa - equivalent to a Category 3 hurricane.
Tests 4 & 5: Following Test 3, Tests 1 and 2 were repeated to ensure the screen remained air and water tight.
Test 6: Resistance to water penetration
A high-pressure hose, placed 300mm from the façade, pumped water at a flow rate of at least 3.4 litres/m²/minute at the assumed weakest window joints and perimeters for five minutes per 1.5m joint.
Test 7: Resistance to wind pressure
A suction pulse rose from 0 Pa to 2700 Pa, was held for at least 15 seconds, then dropped to 0 Pa again and was followed by a corresponding pressure pulse - equivalent to a Category 4 hurricane.
Test 8: Resistance to heavy impact
A variety of objects were swung against the facade as dead-loads in order to challenge potentially weakest areas and largest spans, to ensure no elements failed or fell off during or after the test.