Blast Resistant Enhanced Curtain Wall. Reference Brand: Sapa Building System Elegance 85PF GENERAL DESCRIPTION PERFORMANCE

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1 Blast Resistant Enhanced Curtain Wall Blast Resistant Enhanced Curtain Wall Reference Brand: Sapa Building System Elegance 85PF GENERAL DESCRIPTION Grid based thermally insulated curtain wall system with clamp and clip outer profiles for transparent, contemporary building design and construction. Designed and tested to ISO to resist a range of explosive forces and protect building occupants through accommodation of blast loads through the physical properties of the profiles in conjunction with the glazing retention system and the glass specification. The system allows blast resistant curtain walling configurations in combination with conceptual freedom thanks to a range of internal and external design features and the large maximum glazed pane size. Suitable for vertical, sloped and roof applications. Both horizontal and vertical profiles show a visible sightline of 85 mm. Drainage solutions ensure water tightness for special configurations under most demanding climatic conditions The system fully complies with International standards. Applications : Suitable for single storey to high rise commercial and residential buildings. PERFORMANCE Air permeability EN AE Pa Water tightness EN RE Pa Wind Resistance EN Pa 3000Pa Impact test EN E5/I5 Blast Resistance ISO Classification EXV25 (6mm toughened glass mm laminated glass). Peak Design Pressure 101kPa Specific Impulse 412kPa.msec

2 TECHNICAL DESCRIPTION Profiles : All frames and other profiles are extruded in alloy 6060 T6 in accordance with AS2047 and tolerances in accordance with BS EN The aluminium profiles have a construction width of 85 mm. The structural element is located at the inside of the curtain wall and is composed of vertical and horizontal tubular profiles, upon which glass and/or panels are mounted and retained by means of aluminium pressure plates. Decorative cover caps are clipped to the pressure plate to offer a variety of visual treatments. This structure can be executed as a vertical or sloped surface. The system is part of a modular concept, with interchangeable components. The following quality certificates are available for the system CE Marking in conformity with the Construction Products Directive for the vertical curtain walls and curtain walls within 15 of the vertical line. Initial type tests and calculations related to the performances for purpose of declaration have to be procured by the system supplier after approval by a notified body. The fabrication and manufacturing control is of the responsibility of the contractor, possibly certified by a third party. certification from a qualified independent test authority of blast test performance results relevant to the window size and glazing specification required Copies of these certificates must be available for immediate presentation at the request of the architect. The structural profile walls have a thickness ranging from 2 to 4 mm. The mullions consist of a tubular profile incorporating drainage channels, grooves to retain glazing gaskets and a groove to retain the insulator and fixation of pressure plates. The profile chamber can accept an aluminium or a standard galvanized steel reinforcement. Mullion depth is 180mm. Transom profile depth is 98mm If required, the inner face of the transom can be flush with the inner face of the mullion. Pressure plates are fixed by means of stainless steel screws and locking rings of EPDM into the continuous channel of the base structure with a distance of 85mm maximum. Screws are fixed with a torque between 3,5 and 4,5 Nm to guarantee an optimum clamping of glass and/or panels under blast conditions. Subsequently the aluminium cover caps are clipped onto the pressure plates. Cover caps have an outside width of 85mm. Vertical and horizontal caps have different depths in order to obtain a correct interface. The vertical cover caps have the following features: rectangular shape with a total depth of 25 mm minimum (including gasket). The vertical cover caps are clipped to the pressure plates without visible mechanical fixing. The horizontal cover caps have the following features: Rectangular shape, closed, water reject lip and a depth of 23 mm including gasket 2

3 TECHNICAL DESCRIPTION (cont) Surface treatment: Available finishes include anodising and polyester powder coating or a combination of both. Application is carried out through a Qualicoat /Qualanod certified applicator. Colours : Anodised25 microns either standard (code) or black ( code) or bronze (code) or gold (code) Polyester powder to AS3715 using a powder certified to Qualicoat Class 2, in RAL colour:... with finish of either matt (30% under 60 angle) or satin (70% under 60 angle ) or gloss (90% under 60 angle) Thermal Insulation : Thermal isolation is achieved through a continuous insulation profile in ABS that is attached to the underlying aluminium structure. Connections : The assembly is carried out in accordance with the instructions of the system supplier. Possible connection techniques are the following: pinned and screwed connection Each connection technique requires the appropriate sealing accessories. The system allows for transoms in the sloped condition. Glazing : The glazing rebate is to be 37mm in depth.. Inner and outer glazing gaskets are made of TPE. The outer glazing gaskets are always identical as the outer surface of the glazed infill is on a consistent plane. Glazing is to be selected to provide the appropriate level of blast resistance plus thermal, acoustic and safety characteristics. Glazing is to comply with AS1288 except in circumstances where this compromises blast performance to ISO Glass and panels with thickness of up to 33.5mm can be integrated 3

4 TECHNICAL DESCRIPTION (cont) Drainage and ventilation : The system allows for following connection principles between the horizontal and vertical profiles: notched transom screwed and pinned onto plain mullion The drainage method selected should be in accordance with the test reports and manufacturing instructions of the system supplier. The system is either field or mullion drained or a combination of both. Sufficient ventilation of each compartment should be incorporated for the purpose of effective drainage. Minimum sizes of the drainage holes are as follows: 50 mm² minimum per opening, ie rectangular holes of 5 x 38mm in the pressure plate and of 6 x 25mm in the cover cap. The minimum number and spacing of drainage holes is to be documented within the FPC specifications of the system supplier. The drainage and ventilation slot centres in the pressures plates should be 105mm apart A moulded drainage spout is located at the junction of adjacent mullion profiles when employing mullion drainage. At the bottom edge of the curtain wall an EPDM membrane is installed behind the inner drainage level in order to evacuate all drainage water. INSTALLATION AND FIXING Movement : Thermal movement : At a temperature difference of 40 C a thermal movement of 1 mm/m is to be taken into account for the aluminium profiles. The thermal movement of the transoms is accommodated through slotted fixing holes and EPDM sealing pieces at the end of the transom. The expansion and contraction of the mullions is achieved through a galvanised steel spigot inserted into the chamber of the two adjacent mullions. Dependant on the direction of the movement,, the expansion profile is screwed into one of the two mullion profiles. The visible side of the expansion joint is filled with silicone. Water tightness is ensured by 2 aluminium inserts siliconed into the upper mullion drainage channels. Building movement: The mullion is split in order to allow for sufficient settling. Installation and fixing : The mullions are connected onto the structure by means of appropriate fixing brackets in aluminium or galvanized steel. The anchoring of the curtain wall to the structure should be designed so that blast loads are transferred to the building. Furthermore, the curtain wall should be able to expand and contract independently of the structure. The required number, spacing and type of fixing brackets and anchors should be calculated buy a specialist blast consultant, and their installation has to be carried out in order to transfer the loads on the windows to the load bearing structure. 4

5 INSTALLATION AND FIXING Installation and fixing : (cont) Anchoring is executed through slots within the fixing bracket allowing for a three dimensional positioning. In the case of continuous mullions with anchoring on multiple bearing points, 1 anchor must be fixed as a weight anchor and the others have a sliding function by means of slots. The fixing bracket design should allow for perpendicular alignment of the curtain wall irrespective of the alignment of the structural floor slabs. A sealing membrane (butyl, EPDM,...) is installed between the inner structure and the drainage level of the curtain wall. This membrane ensures water and wind tightness and is welded or glued in the corners. At the perimeter of the curtain wall construction the building connections depend upon the peripheral materials used; the effect of a blast load must be considered. The building connections take into account the type of materials involved and their thickness. If aluminium profiles (standard profiles or folded sheet) are used, the connection should always include sealing tape and a flexible joint. 5

6 CROSS SECTIONS Typical Mullion : 6

7 CROSS SECTIONS Typical Transom : 7