The system is composed by T shaped vertical mullions in aluminum fixed to the wall by two kind of special adjustable brackets: a structural one, 150mm high, to be put on the building slab at each floor, and the intermediate ones 80 mm high.
The first ones are designed to carry the vertical loads given by the own weight of the façade and to react to the horizontal loads, which means wind pressure and depression and act as a dilatation joint for the mullions.
The second ones are trolleys for the linear dilatation of the mullions, and they also bear the horizontal loads.
Between the basement and and the GammaStone AIR panel, a rigid or soft insulation panel can be put, up to 140 mm of thickness. The brackets’ length must be calculated.
Horizontal transoms are fixed on the vertical mullions to receive the concealed hangers of the GammaStone AIR panel. The quantity of mullions, transoms, brackets and hangers is determined by the requirements of the desired energetic and static performance of the final façade.
Dynamic thermal-fluid calculations determine the cavity between thermal insulation and façade panel, where the AIR circulates to keep the wall dry.