Italy Now Home to World’s Deepest Swimming Pool 2

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Tuesday, November 18th, 2014
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An Italian architect has designed the world’s deepest swimming pool, which reaches an impressive depth of 40 metres.

Emanuele Boaretto, supported by the Boaretto Group Hotel and Resort, designed the Y-40 pool, also known as The Deep Joy for the four star hotel Terme Millepini. The hotel is located in the Eurganenon Hills just outside of Venice.

Y-40 is 21 metres by 18 metres on the surface and is filled with 4,300 cubic metres of thermal spa water. The water maintains a temperature of 32 to 34 degrees, which enables diving enthusiasts to swim without a wetsuit.

The pool’s name reflects its mathematical measurements, with the Y referring to the ordinate axis of the Cartesian system and 40 referring to its depth. It is currently used for scuba diving, free diving an array of aquatic activities.

From surface level, the pool looks like an ordinary hotel pool, but it features a series of sub levels. Once swimmers dive down more than 15 metres, Y-40’s rectangular structure transforms into a circular void down to its deepest point. The bottom of the pool features a series of caves where scuba divers can learn technical skills.

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Y-40 is broken up into a series of sub-levels to help serve various underwater activities

There is also a transparent suspended tunnel five metres down for guests seeking a dry view of the pool, similar to the half sphere structures found in aquariums.

Boaretto worked closely with underwater experts to develop the project. he is keen to see the pool utilised as a major international diving centre.

“We want to open up a new medium and long term work prospects to try and guarantee prosperity, not only for my company but also for the surrounding land and society,” Boaretto said.

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Ilaria Molinari swims in Y-40, clad as a mermaid, while tunnel spectators look on

Y-40 has also been recognised by the Guinness World Records as the world’s deepest swimming pool, taking the 10-year crown from the 34.5 metre deep Demo 33 pool in Belgium.

The most important element in swimming pool’ architecture is the pool’s strength and resistance, from floors to walls. Many structures, like underwater hotels or commercial aquariums, will utilise submarine technology, while others will use more conventional sealing methods and materials such as glass, steel and concrete.

When it comes to transparent areas such as Y-40’s tunnel, polymethylmethacrylate (PMMA), also known as acrylic or PLEXIGLAS is a preferred material. Acrylic offers increased visibility, as its lower density and lower refractive index provide a clearer view than traditional glass.

The Y-40’s strength is reinforced by its tiled floor and walls by Flor Gres. The tiles are constructed from the company’s Geotech material, which is thick and resilient and offers resistance to deep abrasion and thermal shock resistance. The tiles look like wood but are actually made from Madeira rock.

Culligan Piscine, which constructed and now maintains Y-40, installed four heavy-duty filters capable of handling the pool’s operating pressures.

While reinforcement is crucial when building skyscrapers up to great heights, it is equally important when building to great depths. When going underground, particuarly when water is involved, success lies in the strength of the materials.

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  1. Kane Roberts

    This is a very interesting architectural idea and I love the glass tunnel in the middle for those who wish to stay dry.

    I wonder how much it costs. I guess they are thinking this will give them a unique selling point with benefits which outweigh the investment required.

    • Steve Ryder

      I know from a structural engineering perspective swimming pools are often the first to be value engineered out of projects.

      You mention Kane the USP outweighing the investment. I would have thought anyone who really has a passion for diving isn't going to be doing it in this swimming pool. I for one would much rather do it strangely enough at the Great Barrier Reef for example.

      I am a great advocate of innovation when the innovation helps achieve 'real' benefits and functionality. I sometimes wonder if these 'deepest, tallest, widest, greenest even' ideas are purely for vanity's sake.