With the luxury shopping mall ICONSIAM, the skyline of Bangkok has been given a 750,000sqm landmark on the Chao Phraya River. The draft of Urban Architects envisioned a 3-stories-spanned “colossal window”, that captivates with its innovative design while at the same incorporating allusions to traditional Thai culture.
The shape of the 5,300sqm façade (Luxury Façade) is geometrically utmost complex: For static reasons, the glass façade had to be suspended from the ceiling, wherein the glass panes are inclined in two directions and arranged in a zig-zag-shape. seele faced this challenge and developed an outstanding technical solution for the up to 24m high all-glass façade.
Glass and steel were produced within the seele group. 333 glass fins (up to 8-fold laminate) and 333 glass panes with a length of up to 16m were manufactured and 103t mild steel and 118t stainless steel were processed into stainless steel shoes, consoles and other elements.
To ensure a high production accuracy, the stainless steel shoes were mounted on the glass fins prior to shipping to Bangkok. On site, the glass fins were bolted to 120 continuous glass fins up to 24m height. Within 13 months, the glass fins and glass panes were assembled into a highly transparent façade stretching across a length of 300m.
In a project duration of under two years, the entire engineering, production and assembly was carried out. With the Luxury Façade, seele realized one of the largest suspended all-glass façades, and thus set new standards in façade construction.
Deep insights into the spectacular project
The film shot shows the development process of the luxury shopping mall ICONSIAM. Gain an insight into the design process, the production of glass and steel and the assembly of the 5,300 sqm all-glass façade.
Spectacular assembly of oversized glass panes
For the assembly of the oversized glass fins and panes, two suction units with counterweight and three-axial adjustment were developed specifically for this project. Only the specially developed suction systems made it possible to lift the glass into the final, double inclined position. During assembly, the glass fins were temporarily stabilized by custom-fit timber supports that formed the contour of the façade. Only when the façade panes were inserted, the façade became self-supporting. Particularly spectacular was the installation of glass fins which were inserted in one piece, featuring 24m heigth and a weight of 5t each.
Technical highlight: Static hanging on the roof
Glass fins form the supporting structure for the suspended all-glass construction. These were assembled from parts with lengths of up to either 16m or 8m. Static fastening was on the ceiling at a height of 20m, above that, the construction cantilevers up to 4m to form a balustrade for the roof garden above. The façade comprises glass panes measuring up to 16m x 3,20m and 8m x 3,20m. The dead weight of the façade panes, which are up to 3.5t, is absorbed at the lower end of each pane by crosspieces, known as transoms. All steel components directly connected to the glass had to be designed as bolted connections in order to rule out accuracy losses due to welding distortion. There are six entrances along the façade, consisting of gold-colored stainless steel portals. These portals are necessary for static reasons in order to fix the doors and separate them from the suspended façade, so that the movements between the roof and floor can be absorbed.
|Client||ICONSIAM Co. Ltd.|
|Main contractor||Thai Obayashi Corp., Ltd.|
|Engineer||KCS & Associates Co., Ltd.|
|Date of completion||2018|
|Scope of seele supply||Design, production and installation of 5,300sqm all-glass façade:
Article courtesy of Seele