Luca Negri

Waterproofing of the underground car park

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The underground garage of the SPZ complex made with the waterproof structure Drytech White Tank

Drytech realised the waterproofing of the underground car park of the Schweizer Paraplegiker-Stiftung in Nottwil, on the banks of Lake Sempach.



Due to the presence of a significant water table, the large underground car park and all underground rooms were constructed with Drytech Tank waterproofing.

The car park of the Schweizer Paraplegiker-Stiftung shares an entrance with the underground car park of the “Sempachersee” hotel.

Car park D has 242 parking spaces on two floors, 31 of which are specially designed for wheelchair users.

As part of the construction of the new Swiss Paraplegic Centre, a practical and functional connection to the Guido A. Zäch Institute was also created.

Owner: Schweizer Paraplegiker-Stiftung, Nottwil 

Structure: Basler & Hofmann West AG, Zollikofen

Project: Hemmi Fayet Architekten AG, Zürich

Construction: Stutz AG, Willisau

Waterproofing: Drytech Tank, 4’700 m2

Waterproofing underground atrium of railway station

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The large canopy protecting the underground atrium connecting Lugano's railway station to the city.

Drytech realised the waterproofing of the underground atrium that creates a new connection between the Lugano railway station and the urban fabric: a veritable portal that connects arriving and departing travellers with the rest of the city.

The icon of this project, which adapts the important urban hub to the increase in the flow of travelers and rationalizes their routes, is the large 1,600 square meter canopy suspended above the underground atrium.

The thin, airy roof creates a wallless atrium. From the train window you can thus admire a suggestive glimpse of the lake.

The atrium is lowered to the level of the main underpass, which connects the two parts of the city divided by the station, and through which you access the ramps that lead to the platforms.

The hypogeum is a waterproof structure made with the 2,700 m² Drytech Tank.

Owership: SBB CFF FFS, Lugano

Project: Gruppo architetti StazLu, Lugano

Struttura: Studio d’ingegneria G. Dazio & Associati, Cadenazzo / 
Studio d’ingegneria Bernardoni, Lugano

Construction: GeoEdil, Lugano

Drytech Tank: 2’700 m² 

Waterproofing of a automotive plant

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The new Gleason headquarters in Studen

The waterproofing of the basement level of a large, modern automotive plant was realised with the Drytech White Tank system.

The building is used partly for offices and partly as a large production area for the Studen branch of GLEASON-PFAUTER Maschinenfabrik GmbH.

Technologically sophisticated gear hobbing machines for the production of precision gears for the worldwide automotive industry are manufactured here.

The large volume is flooded with light and has flexible space management.

Drytech Tank waterproofing has reduced the construction time of the industrial complex.

Owner: ECOREAL Schweizerische Immobilien Anlagestiftung, Zürich

Tenant: Gleason-Pfauter Maschinenfabrik GbmH, Zweigniederlassung Studen

Contractor: Losinger Marazzi AG, Bern

Structure: CAD Zürich GmbH, Zürich

Project: Frey Architekten, Olten

Construction: Frutiger AG, Thun

Drytech Wanne: 3’324 m2

The waterproofing of the Intesa Sanpaolo skyscraper

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The Intesa Sanpaolo Tower in Turin confirms the coincidence between form and substance that characterized the entire work of architect Renzo Piano.

The waterproofing of the Intesa Sanpaolo skyscraper in Turin with the Drytech Tank system has made the perimeter joint between the raft and diaphragm watertight, among other structures.

The Intesa Sanpaolo Tower in Turin confirms the coincidence between form and substance that characterized the entire work of architect Renzo Piano.

Just look at it to understand how it is made, how it works. Starting with the multiple relationships that he establishes with the environment, the city, the mountains on the horizon.

The east and west facades are characterized by tapered columns that support the 38 floors above ground, for a height of 166 meters.

A skin of mobile and transparent slats is suspended on these facades, which convey the air for cooling in summer and ensure thermal insulation in winter.

The skyscraper breathes and interacts with the environment, with the aim of consuming very little energy, which is moreover produced entirely from renewable sources.

The south side in fact entirely covered by a photovoltaic field of 1,600 square meters and the air conditioning system uses the heat exchange energy with the ground water. A rainwater collection system allows a saving of 48% of drinking water. Rain sensors and intelligent control units ensure controlled irrigation of green areas.

Lighting is also optimized through a louvered sunscreen system that modulates the amount of sunlight that penetrates the premises. At sunset the artificial lights come on automatically and gradually, according to the ephemeris.

The dialogue with the outside is not limited to the energy aspect, but also affects the social and urban plan. In addition to the offices for 2,000 Intesa Sanpaolo employees, the skyscraper has six floors dedicated to the public, with an auditorium, spaces for cultural events, a restaurant and a school. On the top of the Tower there is also the bioclimatic greenhouse and a panoramic café.

Started in December 2008, the first phase of the project ended in June 2011 with the construction of the foundations and the 6 underground floors with the top-down technique. Drytech has created all the tanks (internal and external) with the White Tank system as well as the treatment of the floor-diaphragm recovery joint along the entire perimeter of the basement, for a total linear development of 420 meters.

The underground floors house a car park with 300 parking spaces, technical rooms and the surprising underground garden, which also overlooks the kindergarten park.

At the foot of the skyscraper there is a park crossed by pedestrian paths that connect the surrounding avenues. On the large lawn, the kids give life to a theory of spontaneous and interminable football matches, making the doors with a pair of sweatshirts.

Ownership: Intesa Sanpaolo Spa, Torino

Project: Arch. Renzo Piano, RPBW Paris

Structure: FHECOR Ingenieros Consultores, Madrid

Drytech Tank: 5,200 m²

Waterproofing the underground garage

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Architectural detail of the loggia of the Municipal House of Cadempino

Waterproofing the underground garage of the Cadempino town hall, designed by Antonio and Luca Antorini Architetti.

The new Municipal House of Cadempino is the seat of the city administration, but it is also many other things for the citizens. It is first of all a square, or an agora: in the Hellenic sense the main place of democracy, heart of the polis and seat of the assemblies.

This large open space, which from an architectural point of view communicates with the volumes, enhancing them through the contrast between empty and full, from an urban planning point of view acts as a catalyst and multiplier of meeting opportunities, both organized and spontaneous.

The square is also an arena: the steps that define the west side host the public for en plein air shows or events. The hope is that it will also be colonized and chosen as a wall by the kids of the town, but these are imponderable dynamics on which architecture can affect up to a certain point.

The space is delimited to the north by the large multi-purpose room and to the east by the municipal warehouse, while the main building, just set back, characterizes the square with a spectacular loggia that lightens its volume, and on which Lorenzo’s mobile sculpture vibrates Change.

The basement houses two car parks with charging stations for electric cars.

The entrance to the Municipal House of Cadempino is created in a deep setback compared to the main facade, which also in this case the void gives lightness to the structure.

The three levels of the main building develop around a tree that grows in a winter garden created in the center of the structure.

Vital fulcrum of the building, visible from each level at a different height, the cork oak takes on an engaging symbolic value, in which democracy can be seen as a good to be cultivated with everyone’s contribution.

Project: Antonio e Luca Antorini Architetti, Porza

Structure 1: Ing. Alessio Casanova, Pazzallo

Structure 2: Ing. De Bernardis, Massagno

Construction: CSC, Lugano – Giovanni Quadri, Cadempino

Sculpture: Lorenzo Cambin, Sorengo

Drytech Tank: 3’190 m2

Waterproofing Läderach chocolate factory

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The Läderach site is bordered by a river, which is why the basement was built with the waterproof structure Drytech White Tank.

Drytech carried out the waterproofing of the new extension of the Läderach chocolate factory, which was built near a water course.

Since 1999, Läderach (Schweiz) AG, which has long since gained a worldwide reputation, has expanded almost every year by adding extensions, extensions and basements to its headquarters in Ennenda.

Leuzinger Architektur AG from Glarus designed and realised all the new buildings.

The latest is a new four-storey production hall, on the ground floor of which a new staff restaurant has opened.

Owner: Läderach (Schweiz) AG, Ennenda

Structure: Jackcontrol AG, Glarus

Project: Leuzinger Architektur AG, Glarus

Construction: Trümpi AG, Glarus

Waterproofing: Drytech Tank, 2’090 m2

Waterproofing of a pedestrian subway under an active railway line

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A new pedestrian underpass was built under the Vigevano station, which allows travellers to safely access the platforms and connects the two districts on either side of the station.

Drytech carried out the waterproofing of a pedestrian subway in the Vigevano station built under an active railway line.

A new pedestrian underpass was built under the Vigevano railway station, which allows travellers to safely access the platforms and connects the two districts on either side of the station.

The waterproof structure was designed and built with the Drytech Tank System, without interrupting railway traffic.

A suspended metal structure was created to support the tracks, closing one track at a time in rotation, diverting circulation to the others from time to time.

The underpass was made of watertight concrete based on the Drytech recipe, defined by Drytech Engineering on the basis of the aggregates present in the concrete mixing plant chosen by the Quadrio company.

The construction site did not affect the normal circulation of the trains and, in turn, Drytech did not interfere with the progress of the works, since its activities are parallel to the construction ones and are in fact removed from the work schedule.

Ownership: RFI Rete Ferroviaria Italiana 

Structure: Intera Srl, Roma 

Construction: Quadrio Gaetano Costruzioni SpA, Morbegno

Drytech Tank: 1,580 m²railway

Waterproofing of Tissot Arena

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Vista aerea della Tissot Arena di Bienne, con lo stadio di calcio, la pista di hockey e il centro commerciale.

The waterproofing of the underground structures of the Tissot Arena, starting with the underground car park, was realised with the Drytech Tank system.

The multifunctional sports and cultural complex is unique in Switzerland in that it combines a football stadium, an ice hockey stadium, an ice rink, a football training ground and a curling hall under the same roof.



In mid-2016, three more outdoor training grounds were completed to complete the overall stadium facilities. Inside, there are also large commercial areas, cinemas and a large multi-storey car park built with the waterproof concrete structure of the Drytech Tank.



The flexibility of the rooms also allows the stadium to host cultural events of all kinds, from concerts to conferences, allowing the facility to be used every day of the week.



In addition, Energie-Service Biel operates the world’s largest stadium-integrated solar power plant on the roof of the Tissot Arena.

Owner: Stadt Biel

Contractor: Bauherr II HRS Real Estate AG

Structure: Ribi und Blum AG, Romanshorn

Project: GLS Architekten AG, Biel

Constraction: Implenia Schweiz AG, Basel

Waterproofing: Drytech Tank, 725 m2

Restoration waterproofing of a subway

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DRYflex resin injections to waterproof a road subway, without having to interrupt the upper railway traffic.

The restoration waterproofing of a subway was carried out by Drytech with resin injections from the inside, without impeding the normal upper movement of trains.

A waterproof underpass without having to interrupt the upper railway traffic.

The restoration waterproofing of the Albairate road underpass was necessary due to the failure of the existing bentonite system.

The structure was restored with DRYflex resin injections in the movement joints and in the casting joints.

The underpass began to leak a few months after opening.

Drytech intervened from inside the building, without structural demolitions or external excavations and, above all, without limitations to the normal circulation of trains on the Milan-Vigevano line.

Like any Drytech restoration, this too allowed immediate verification.

Ownership: RFI Rete Ferroviaria Italiana

Restoration project: Ing. Maurizio Schiavo, Padova

Restoration company: D’Adiutorio Appalti e Costruzioni Srl, Montorio al Vomano

Drytech restoration:
277 m movement joints;
133 m joints.

Waterproofing of an underground wine cellar

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The Giusti Wine cellar in Nervesa della Battaglia designed by architect Armando Guizzo

For the waterproofing of an underground wine cellar, a total Drytech Tank was built, as the roof is also covered by the vineyard.

The new Giusti Wine cellar in Nervesa della Battaglia was designed by architect Armando Guizzo to tell a story of ties with the territory and harmony with nature.

Ermenegildo Giusti is a convinced supporter of viticulture that respects the environment and people. Giusti wanted a winery that plastically expressed the values of sustainability and integration.

The cellar is two thirds underground, while the emerged part integrates with the territory, not only architecturally but actually: the undulating roof with its rows is not an aesthetic exercise, but rather an authentic wine-growing area, structured to support the weight of the agricultural vehicles and which produces bunches exactly like the surrounding rows.

Particular attention was paid to the roofing, with an in-depth study of the materials used for growing the vines. First of all, the natural soil that covered the area before the construction site was excavated was restored on the roof.

Below this original soil, several layers of different natural materials were laid, including expanded clay, which in addition to ensuring the growth of the vines, make an important contribution to the energy saving of the building.

The entire hypogeum was created with a single waterproof Drytech Tank.

Owner: Giusti Dal Col, Nervesa della Battaglia

Project: Architect Armando Guizzo, Montebelluna

Structure: Engineer Alessandro Pagnan, Montebelluna

Drytech Tank: 4,500 m2