Due to its unique appearance and excellent performance characteristics, translucent facades gained popularity among architects and civil engineers. A building façade arranged of glass and aluminum framework can be of different color, properties, shape (vertical, tilted, horizontal) and etc. The structural glazing technique provides new design opportunities for building facades. The structural glazing systems conceal aluminum fastenings, hence the building face turns into a glass monolith. The Alutech Group offers facade systems for different types of structures, production and installation.

ALT F50 post-transom facade

ALUTECH ALT F50 classic post-transom facade includes post and transom with 50 mm visible width. It enables maximum translucency and visual lightness of facade constructions, as well as a stylish apearance. All visible construction components can be painted with any RAL color. The quality of profiles coating confirmed by Qualicoat 2000. The most demanding customers are offered anodized profiles resistant to aggressive exposure of the environment. The set of available thermal inserts and gaskets provides the installation of fillings (glass units, thermal insulation panels) from 4 to 50 mm thick.

Advantages

Primary distinguishing advantages of the system are as follows.

1. High degree of thermal insulation (Group 1.0).

Today, when prices for all types of energy resources are constantly rising, it is impossible to stay clear of problems related to environment and resource saving to create comfortable climate in a facility. To ensure good thermophysical and sound insulation of a building envelope, the ALUTECH ALT F50 series uses a set of thermal inserts (thermal insulators) made of hard impact-resistant polyvinyl chloride (PVC-U-HI) with high heat insulation parameters, co-extrusion sealant (patented solution) and a number of sealing gaskets based on ethylene-propylene rubber (EPDM). Due to optimal combination of these components the following thermal insulation parameters are provided (according to DIN 4108-4):

Test certificate for thermotechnical parameters of ALUTECH ALT F50 central section by IFT Rosenheim Institute:
Download test certificate for thermotechnical parameters of ALUTECH ALT F50 central section, PDF, 0.4 MB

during installation of splitting seal assembly the heat transfer coefficient of central profile solution (without glass unit) equals to Uf = 1.8 W/(m²К) or reduced total thermal resistance Rred.= 0.55 m²°C/W (frame materials group 1.0);

standard solution includes heat transfer rate of Uf = 2.4 W/(m²K) or reduced total thermal resistance Rred.= 0.42 m2°C/W (frame materials group 2.1).

This provides for significant improvement of thermophysical characteristics without dramatic increase in the value of 1m² of the construction.

2. «Warm-Cold» system.

Using original PVC separators in party walls and crossings of the facade makes it possible to use single-thickness sheet glass rather than a glass unit. Availability of special grooves enables covering thermal insulation with any inexpensive panel material. It ensures economy transfer from nontransparent to transparent area of the structure without deprivation of thermal insulation properties. Taking into account the fact that for the last two years the market price for plate glass has increased by several times, such object solution is increasingly used by developing surface-mounted translucent facades.

3. Multiple connection options for basic profiles and simplicity of processing.

The facade series ALUTECH ALT F50 provides for several types of connecting post to transom:

• end joint (without profiles milling using slotted jet nut element);
• 6 mm lap joint (without post grooving);
• 6 mm lap milling (with post grooving).

End joint (without additional transom machining)	6 mm lap joint	6 mm lap joint with post grooving

General description of the system

F50 system enables start of aluminum structures production at minimum time and costs, while companies already working with aluminum profiles can quickly switch to ALUTECH ALT F50 without changing basic types of connecting and machining post and transom.

Besides, there are several means of connecting post and transom:

• using chamber jetnut elements (step-by-step installation);
• using chamber jetnut elements and slides (simplified installation);
• using butt transom self-tapping screws (simple and economy-type connection with preliminary machining of the post).

Several connection variants for the profiles give manufacturers with different experience and different equipment an opportunity to work with the system, and to apply in each specific case the most appropriate and technologically advanced means of connection in facilities of various classes.

4. Interchangeability of main profiles

All posts and transom profiles have grooves in the filling install area that serve to remove condensate and ensure ventilation of the glass unit lock seam area. Section configuration of all posts and transoms makes it possible to use the profiles as both vertical and horizontal profiles of the facade frame.

During manufacture of facade constructions the processing companies often have 0.5-2-meter residues of post profiles that cannot be used anywhere due to their small length. Application of a post as a transom reduces waste of post profiles and optimizes pattern cutting of the shapes during the engineering of facade constructions. Thus the reduction in the number of used standard profiles allows the reduction of the end construction cost.

12 mm lap joint
with vertical post
grooving

End joint (without additional
machining of post profiles)

End joint (without additional
transom machining)

6 mm lap joint

Using transom

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For constructions that do not need to have high rigidity ALUTECH ALT F50 system provides an opportunity to use transom profiles as vertical bearing profiles. To ensure vertical detachment (of reinforcement) of transom chamber rack-type reinforcing profiles are used. It significantly reduces metal consumption, which means the reduction of the end construction cost.

Also, the configuration of main profiles makes it possible to abandon the use of second level transom, thus reducing the stock-list of the profiles. Instead of the second level transom it is recommended to install standard post or transom profiles.

5. Variety of construction solutions.

A unique structure of jetnut profiles (patented solution) enables various bridges and variants of joining facade constructions with building components:

• Creation of kinked surfaces — vertical tilted posts (transition from vertical to tilting part of the construction);
• The post can be rotated in the stained glass window pane;
• Creation of tilt-rotary surfaces;
• Adjoining of tilted construction to the building foundation;
• Creation of multifacet pyramid vertex.

Development of kinked surface.
Transfer from vertical to
tilted part of the construction

Posts can be rotated in
stained glass window pane

Arrangement of tilt-rotary
surfaces

Adjoining of tilted constructions
to the building foundation

Creation of multifacet
pyramid vertex

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6. Stock of required single-piece component parts.

It is not a secret that all post-transom systems are very much similar to each other. Unfortunately, the majority of domestic systems lack the sufficient number of component parts that play an important part in faultless functioning of facade constructions and are an additional decorative element. ALUTECH ALT F50 system includes the required suite of such items that provide:

• decoration of post-transom joint area, as well as vertical junction of two posts;
• the required air circulation and moisture removal from the glass unit lock seam area;
• removal of water and other atmospheric precipitations from the outside surface of the glass unit in tilted structures;
• simplification of post-transom connection.