The Sunny Gallery

Galeria Słoneczna (The Sunny Gallery) is the first project located at the centre of Radom that combines entertaining, sporting and commercial functions. It is distinguished by its architecture and functionality. Funded by Poland Business Park XI Sp. z o.o., the project will offer 42.000 sqm of leasable area. The two-level building will house approximately 170 shops. Visitors will have access to ca. 1.220 parking spaces with direct access to both levels. The Gallery will also include Silver Screen, a modern multiplex with 6 movie screens. Combined with the building functionality, its modern architecture may serve as a model for the new generation of centres throughout Europe. Galeria Słoneczna is a part of an integrated project that incorporates a housing estate with ca. 350 flats of upgraded standard, a water park with roofed slide, swimming pools, sauna and jacuzzi, entertainment park, skating rink, skate park and amphitheatre.

The centre was designed by APA Wojciechowski Architectural Office in cooperation with Altoon & Portet. Porr (Polska) S.A. is the general contractor, with Modzelewski & Rodek acting as a subcontractor for the construction of Silver Screen movie theatre, whereas Harsco Infrastructure Polska Sp. z o.o. delivers its formwork systems.

The 260x180 m rectangle-shaped building under construction is seated on a foundation plate and spot footings. It features a single underground level and two above the ground. The investment was designed on a typical 8.0x8.0 m modular grid, with 8.0x10.0 m modular grid for the underground level. A mixed structural system has been applied: column and slab vs. column and beam. The ceilings are suspended on 50-60 cm Ø circular columns using binding joists and heads. The premises are typically 5.90 m high, and locally climb up to 8.0 m.

Harsco Infrastructure Polska delivers to the building site the TOPEC soffit formwork system (ca. 10 000 sqm) on 550 props with extensions. Tower struts are used as soffit formwork for 8.0 high ceilings and for secondary racking. The lead time of merely 8 months poses a huge logistical challenge. However, no major technical difficulties have been encountered in the building construction.

All essential technological solutions have been discussed on an ongoing basis between the Technical Department of Harsco Infrastructure Polska Sp. z o.o. and the Contractor. The following elements called for special technical solutions:

1. Inclined columns (Ø =65) located on the ground floor level. Columns arranged at 10 m intervals on the underground level, and every 8 m on the first floor- a different structure span was planned for the ground floor level and modified by inclining the column. There is a 1.0 m inclination from the vertical. Cardboard column formwork was used, seated on a foundation made of Manto formwork slabs. The overall structure was based on a SG bracket system and soffit supports.
2. 1.40x0.58 m free-standing rectangular columns were arranged outside the building to support the 18.0 m high roof structure. These columns were to be completed in advance of other construction works. The columns were covered with MANTO formwork up to the height of 9.90 m and embedded in concrete in two separate operations. Above the 9.90 m level, the work continued from working platforms supported by HG 180 brackets. The working platform was erected individually on site, and the bracket spacing was customized to the column geometry. The columns were supported by Alu-super 10 aligning struts until the columns have been ready and until the concrete has hardened sufficiently.
3. Walls in the movie theatre: the western corner of the building was to include ferroconcrete walls of the movie theatre. These are free-standing ~11,0 m high walls that support the steel roof structure. Up to the height of 5.40 m, the wall formwork is based on KG-300 platforms. 1.80 m wide passageways are designed around the theatre rooms. Traditional platforms do not apply here as the distance between the walls is too small. The Contractor was also offered to erect the formwork on shaft support beams. These elements are typically used for working platforms in elevator shafts. The distances between walls were small; therefore this solution was a perfect alternative to traditional working platforms. The beams could be easily relocated by cranes, and no stay-in-place anchors were necessary. Thus, safe and mobile working platform could be mounted between the erected walls.

The following elements were used in the investment, in particular:

• ca. 10.000 sqm of Topec soffit formwork,
• Rasto wall formwork
• Ronda circular formwork
• ca. 2.700 m2 Manto wall formwork
• over 11.000 550 cm high soffit props,
• ID 15 frame struts ca. 1.700 running meters
• 300, 450 mobile platforms applied in the erection of high walls, and other applications
• H20 wooden beams
• Bosta 70 scaffold
• Boss mobile aluminium towers (used as reinforcement scaffolding) 
• circular steel formwork fi 500 mm and fi 600 mm (for the erection of columns)

Katarzyna Dokowicz
Specjalista ds. PR
Harsco Infrastructure Polska Sp. z o.o.

kdokowicz@harsco.com

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