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WORLD NEWS

Luxembourg Pool Roof Features Long Wooden Elements When the Cents Sports Centre in Luxembourg was being designed, German architectural firm Auer Weber incorporated an unusual design feature within the roof structure of the new indoor swimming pool. The ceiling was built using extremely long wooden elements – extending up to 23.75 metres – which enabled long-spans and an attractively designed roof. The key for making this possible was using fast, light and green Kerto LVL (laminated veneer lumber) products produced by Metsä Wood. The suspended floating wooden ceiling was structured with slim ribs and an above average web height. The structural design and calculations were done by engineers Knippers Helbig, and the implementation was carried out by specialist wood construction company Holzbau Amann. Use of Metsä Wood’s Kerto® LVL Q-panels made the desired appearance and structure possible. The dimensions of the roof are impressive. The goal of the architecture was to create a wooden rib ceiling with deep cassettes with long spans to create the large spatial volume.

The dimensional stability of the Kerto LVL web was a great advantage here and the structure was produced with a height of 1.1 metres and a thickness of only 75mm. Hendrik Pfeffinger, the Project Manager at Holzbau Amann, explained: “We went beyond standards for the ratio of thickness and the height of the beams, so special solutions had to be established which would on the one hand meet the requirements of Knippers Helbig, while conforming to the structural analyses and approvals in Luxembourg.” For the implementation of these slim dimensions, the Q-panels were virtually predestined for the job thanks to their high loadbearing capacity. The wooden roof elements were prefabricated at Holzbau Amann’s factory and delivered by extra-long trucks to the construction site. Although the elements are almost 24 metres in length, their installation was quick and required only two carpenters on site. Metsä Wood +358 104 605 www.metsawood.com

Penetron Technology Waterproofs Tunisian Aqua Park Facilities The new Rayar Aqua Park – a waterpark of pools, a kayaking river and water slides – was inaugurated in July 2019, in time for the autumn tourist season in Tunisia. Part of the LTI Mahdia Beach Hotel in the resort city of Mahdia, the project contractor asked the local Penetron team for a durable waterproofing solution to protect the concrete structures permanently. Construction began last year on the Rayar Aqua Park, the newest addition to the LTI Mahdia Beach Hotel complex. “Because the Rayar Aqua Park was directly next to the Mediterranean Ocean, the high groundwater at the construction site was a major concern for Batimod, the project contractor,” explained Akrout Hamdi. “Thanks to our success with many similar seaside projects at nearby Monastir, we were able to show the contractor how the Penetron System would be a very effective solution.” Penetron products are formulated to react with key concrete components to

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produce an integral crystalline formation. Penetron-treated concrete is vastly less permeable, more resistant to moisture and chemicals, and has a self-healing capability when compared to regular concrete. “The service life of Penetron-treated concrete is about three times that of conventional concrete,” added Akrout Hamdi. Super Beton, the ready-mix supplier for the Rayar Aqua Park project, added Penetron Admix to the concrete mix destined for all the swimming pools and the river section. While Peneplug, a rapid-setting, crystalline-based compound was used to plug the active leaks resulting from the localised hydrostatic pressure. Other Penetron products were also applied to all the concrete surfaces exposed to the outdoors. “The Penetron System was successfully used on all the concrete structures of the Rayar Aqua Park to provide a high level of durability,” concluded Akrout Hamdi. “The park opened on time and on budget.”

www.swimmingpoolnews.co.uk 01/08/2019 13:20

Profile for Aqua Publishing Ltd

SPN (Swimming Pool News) August 2019  

Informing the pool and spa industry since 1959. Covering the UK's wet leisure market, SPN (Swimming Pool News) is the UK's longest running a...

SPN (Swimming Pool News) August 2019  

Informing the pool and spa industry since 1959. Covering the UK's wet leisure market, SPN (Swimming Pool News) is the UK's longest running a...