Initially, we created a mechanically adhered ventilated backdrop rainscreen curtain wall using the Gridworx Ultra cladding system and four Dekton panels. These panels measured 126” x 56” each delivering a wall measuring over 9’ x 21’.
Next, we attached this wall assembly to the wind and vacuum chambers of the testing facility. First was the positive wind load test. This was followed by the negative wind load test. In a real-life incident, negative wind load is generally a 20% greater force than positive wind load. Negative wind load is created when the wind blows across the face of the building literally sucking the cladding from the structure. This force is exacerbated at the corners of the building as described in the Bernoulli principle.