Variance P – The new glass cladding solution

Variance P – The new glass cladding solution

A revolutionary glass cladding system

Discover the new glass cladding solution – Variance P

In the construction industry, glass cladding has become a popular trend for modern commercial and residential buildings. Owners and architects are constantly seeking innovative solutions to enhance the aesthetics of their building while meeting requirements for energy efficiency and durability. This is where the new product “Variance P” comes in.

Variance P is a glass cladding system designed to meet the highest aesthetic and functional requirements. This product uses tempered laminated glass, tempered monolithic glass, or photovoltaic glass panels that are connected together using invisible fixings. The innovative fixing system allows for easy and fast installation while providing maximum wind stability and resistance.

One of the most notable advantages of Variance P is its adaptability to all shapes and sizes of buildings. The system conforms to all shapes and inclinations of walls. Glass panels can be customized according to the customer’s needs in terms of color, texture, and transparency.

In addition to its aesthetic aspect, Variance P also offers functional benefits such as:

  • Ecological aspect: you have the possibility to fix photovoltaic panels and have thermal and acoustic insulation.
  • Minimalist appearance: the fixings are invisible once the glass is installed.
  • Customisable aspect: the glass can be customised to create unique facades.
Thermal expansion of facades with point fixed glazing system

Thermal expansion of facades with point fixed glazing system

Thermal expansion of facades with point fixed glazing system

Introduction:

In the field of construction, various climatic phenomena act throughout the life of facades with point fixed glazing system, which are directly exposed to the wind, snow, seismic events, and the effect of temperature variations. The expansion of different materials composing a facade can cause significant disorders if not taken into account early in the design stage. Therefore, it is essential to consider the effects of temperature during the design and sizing of a building facade. The temperature can change during the same day, and there can be significant differences between day and night. The temperature can also generally vary considerably from one season to another. The temperature range during the life of a facade is typically considered to fluctuate between -40°C and +60°C, representing a delta of 100°C.

dilatation verre gif anime

Different materials that make up a glazed facade have varying thermal expansion coefficients (*). Table 1: Some common values of thermal expansion [2

tableau article 6 couleurs

      ∆L= ∝L0 ∆T

 

  • ∆L  is the variation in length in metres [m]
  •  ∝  is the coefficient of linear expansion in Kelvin at power -1 [K-1]
  • L0  is the initial length of the element in metres [m]
  • ∆T  is the temperature change in Kelvin [K] or degrees Celsius [°C].

COMPATIBILITY OF DEFORMATION:

Facades with point fixed glazing system are often held by stainless steel fasteners, which themselves are supported by a steel or aluminum frame. Due to the different types of materials used, each element has different elongations due to thermal stresses. Given the fragile nature of glass, the glass panels of exterior point fixed glazing system are designed to be completely free of movement in their plane without constraints. These movements are allowed by functional clearances. Generally, the glass is suspended on two upper points, aiming to avoid phenomena of glass panel buckling (bending of the glass under its weight). The devices that allow functional clearance are the fixed, dilating, and free points provided in the attachments. All fastening points support forces perpendicular to the glass (wind direction for a facade glazing; weight, snow, and wind direction for a roof glazing). The fixed point fixes the panel in the plane of the glass. The dilating point fixes the panel in the vertical direction. Finally, the free points only support the loads normal to the panels.

The devices allowing functional clearances are the free and expanding points provided in the fasteners

image article 6 figure 1

All fixing points take up the forces in the direction perpendicular to the glazing (wind direction for a façade glazing; direction of weight, snow and wind for a glazed roof). The fixed point fixes the pane in the plane of the glass. The expansion point fixes the pane in the vertical direction. Finally, the free points only take up the loads normal to the panels. In practice, it is up to each design office to plan the position of the functional clearances adapted to the project, and to ensure that the dimensions of the functional clearances are in line with the climatic loads of the project.

In summary, temperature is a key factor to consider during the design and sizing of glass facades in buildings. The different materials that make up a facade have varying thermal expansion coefficients, which can cause significant disorders if not taken into account. To prevent buckling phenomena, glass panels are designed to be completely free of movement in their plane, thanks to the use of dilating and free points in the attachments. This allows for functional clearance to manage the different deformations caused by thermal stresses.

[1] Façades légères en détail, 2nd edition, Pierre Martin, 2017. [2] Cahier 3574_v2, Attached External Glazing (AEG) with Technical Opinion, 2011.

Visit us at BAU 2023

Visit us at BAU 2023

We are excited to be part of the world’s leading trade fair for Architecture, Materials and Systems in Munich this year.

From 17 to 22 April, our team will showcase our latest innovations in balustrades for buildings and glass industries.
Visit us at booth 520 in hall C3 at Trade Fair Center Messe Münchento see how our solutions increase the performance of your installations.

We look forward to seeing you!

Get your ticket here

New SABCO Catalog 2022 – 2023

New SABCO Catalog 2022 – 2023

What’s new for glass balustrades railing: The SABCO 2023 catalogue

On our SABCO glass balustrade, our fixing systems are fast, simples and adjustables because we know the constraints you face during installation !
In this catalogue you will find :
✔ New rails: for all project configurations
✔ New tools: for a quick and easy installation
✔ New handrails and covers: for a perfect finish
Safety is our foundation, which is why all our products are tested and validated by the Avis Technique, issued by the CSTB, as well as by other recognized organizations around the world.
Download the SABCO catalogue

For more informations: More information

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