System 17 Latitude Curtain Walling

Curtain walling developed for horizontal emphasis. The mullion sections can be installed at 3 m plus centres exhibiting a narrow, flush, vertically pointed glass to glass joint. Transom sections are capped with a range of 50 mm wide face caps to emphasize the horizontal lines of the external structural grid; subject to the structural sections being designed to accommodate the applicable loads in accordance with the relevant site conditions and application.

Features and benefits:

• All windows/ screens, in conjunction with a suitable glazing specification, have been designed to meet the current requirements of Building Regulations.
• Weathertightness: To BS 6375-1: 1989 and BS 5368.
• Air permeability: 600 Pa.
• Water resistance: 600 Pa.
• Wind resistance: 2400 Pa.
• Dynamic Test: In accordance with the CWCT sequence B test regime using a representative two storey test sample.
• Static Air Permeability: <1.5 m³/hr at 600 Pa.
• Static Water Penetration: Zero ml at 600 Pa.
• Dynamic Water penetration: Zero ml at 600 Pa.
• Structural performance: 2400 Pa (140 mph).
• Safety Gust Performance: 3600 Pa (210 mph).
• All structural profiles can be designed so that maximum deflection of any member shall not exceed L/200 of its span, with no evidence of any permanent deformation once the load has been removed. All transom sections are designed to limit their horizontal deflection to a maximum of 3 mm.
• A concealed/ frameless top hung open out vent can be incorporated. Door systems may also be incorporated with visible frames. Consult with Metal Technology for recommendations and details.
• Stick system, pressure equalized and mullion drained. The system is thermally broken throughout by means of a continuous thermal isolator located between the external pressure plates and internal framing members. No pressure plates or face caps are deployed externally on the vertical mullion joints. However, where site conditions and transom centres exceed the glass deflection limitations, additional intermediate pressure disc fixings are employed to secure the vertical edges of the double glazed units to the structural mullions.
• Silicone bonded 32 mm to 36 mm double glazed units, dual sealed, with UV stable, silicone compatible, edge sealant and black anodized spacer bars. All exposed edges of the double glazed units are ground and arrissed. The vertical edges of the double glazed units are opacified by a dot matrix screen print to prevent read through of edge seal and spacer bar detail.
• Dry glazed using proprietary, high performance captive gaskets. All gaskets are bonded and sealed during construction, using waterproof adhesive. All internal gaskets have pre-moulded vulcanized corners. All double glazed units are supported continuously along all four edges by an internal structural member and held firmly in position by means of a screw fixed pressure plate with a snap on face cap to the horizontals only. Vertical mullion joints are silicone pointed, and where applicable gasketed, to provide a 22 mm wide, flush glass to glass joint.