9.x WICTEC 50 evo mullion/transom façade with straight cut and pressure block holder
Subject of the invitation to tender is the manufacture, supply and installation of a thermally insulated aluminium façade, in principal a curtain wall or façade installed between the ceilings comprising mullions and transoms with infills which are to be used from the outside.
The necessary thermal insulation of the entire façade surface is provided by the infills (insulting glass, panels and other infilling) and profile system.
The following technical requirements must be complied with:
Sight line: 50 mm
Mullion construction depth: 66 to 206 mm
Transom construction depth: 65.5 to 205.5 mm
Mullion profiles, one- and two-piece, located on the room side as a load-bearing construction
Pressure block holder - short pieces with concealed fixings
Cover profiles in aluminium
Edge radius for cover profiles in external areas and mullion and transom profiles in external areas <= 0.5 mm
Special profiles and seals for base and top points
Unless otherwise specified in the position description, the depths of the supporting profiles are determined by the contractor taking into account all the static requirements applicable for the affected profile.
Fastening for the structure supporting the façade
Carried out using the assigned façade design and on the matched fixing system, whose main components are made up of thick-walled aluminium profiles. For details and list of types see technical specification, WICTEC AN façade fixing system.
Continuous insulation level in profile design and infills
Insulation strips, fitted and continuous, with sealing lip which covers the glass edges (horizontal and vertical) corresponding to the stipulated infill thickness
The insulation strip must ensure a defined distance stop for the pressure block holders to ensure even pressure on the glazing
Butt connection of the transoms to the mullions without profile overlapping butt
T- and cross joints with sealing piece; adhesive and sealant-free processing. Systems which require adhesive or sealant in order to seal the transom joints are not permissible
Vertical expansion joints for one- and two-piece mullion profiles with plug-in connectors (connecting sleeves)
Expansion joints, fitted in the area of the balustrade railing bar, 10 mm expansion gap sealed using seal sets in the transition
Same sight line of the internal mullion and transom seals
Linear external glazing using pressure block holder short pieces is mandatory. Systems with continuous pressure block strips are not permissible. Pressure block holder clearance corresponds with the manufacturer´s processing guidelines
Fixings of the glazing system must not penetrate the water-bearing layer
Supporting blocks made from aluminium; blocking according to relevant glazing guidelines
Internal and external glazing gaskets in EPDM
Mullion E1/transom E2 profile connections
Transoms are usually butt-jointed in the rebate area using cast connectors on the mullions, impinging on transom hollow; optionally also for transom retrofitting using special connectors with spring bolts. Profile connections according to the specifications of the system house and static requirements. For connector screw fittings, only the system provider´s self-sealing screws are permissible
Mullion profile connections (vertical expansion joints)
Vertical expansion joints for one- and two-piece mullion profiles with plug-in connectors from reinforcing profiles
External glazing is mandatory
Internal glazing gaskets may be butt-jointed, as a connection with sealing cord short pieces without using additional adhesive substances or frames with formed corners and/or vulcanised frames
External glazing with pressure block holder short pieces; the external seals are fitted continuously (vertical) and butt-jointed (horizontal) in the cover profiles
The installed façade system must be capable of accommodating different infill thicknesses field-by-field (adapter profiles)
Internal EPDM seals and/or aluminium adapter profiles are smoothed flush between neighbouring infills of different thicknesses; the butt joints of these profiles are sealed with EPDM terminals
Vapour pressure compensation and drainage from the glazing rebate.
The façade system complies with the applicable regulations and the recommendations of the insulating glass manufacturers
Tested vapour pressure compensation (ventilation) and drainage from the glazing rebate, via the four corners in each field and with a choice of drainage system, depending on the respective façade height
Installation of thermally insulated windows and doors
in the façade grid occurs in the same way as with solid infills
Mullion E1 - mullion E2 - façade (mullion profile as transom application)
Heat transfer coefficient of the profile system:
Uf in W/(m²K) in accordance with EN ISO 10077-2 corresponding to the high of the insulation zone and formation of the glass seals
Carried out using plastic insulating strips, by the clamping connection continuously fixed on the screw channels of the load-bearing profiles. The height of the insulating strips is dependent on the thickness of the infills being accommodated and the required Uf values corresponding to the system selection.
The thermal insulation in the profiles and in the infill units is at the same level.
Evidence and certifications
- Air permeability EN 12152, class AE
- Driving rain resistance EN 12154, class RE1200
- Ability to withstand wind load EN 13116 - permissible load, +2.0/-2.0 kN/m²
- Ability to withstand wind load EN 13116 - increased load, +3.0/-3.0 kN/m²
- Impact resistance 14019, class I5/E5
Evidence of quality assurance according to ISO 9000 standards
System manufacturers, profile pressing plants and composite manufacturers are certified
Cradle-to-cradle (C2C) certified
The performances described are based on the design features, materials and processes of the WICONA - WICTEC 50 evo façade system including its supplements for special applications and the associated fixing system WICTEC AN which correspond to the system description; they are performance requirements which are to be complied with in accordance with the contract.