Milan subway restoration

Drytech has rehabilitated some sections of the Milan underground, during the night closure of the service, therefore without interfering with the normal circulation of trains.

The interventions were carried out with injections of DRYflex expanding resin in the joints between the slab and the inverted arch, for the entire thickness of the concrete structure of the tunnel.

The DRYflex resin is effective even in the presence of pressurized water. This made the intervention possible despite the enormous extent of the infiltrations.

Line 2 of the MM was built between the end of the 60s and the 70s without waterproofing, because the water table was much deeper. The closure of the Milanese manufacturing activities in the 1980s reduced water consumption and raised the level of the aquifer up to the tunnels of Line 2.

The infiltrations are controlled by pumping systems active 24/7, but in periods of heavy rainfall some sections were flooded. A series of waterproofing interventions for some tunnels was thus decided, carried out by Drytech between one and five in the morning.

Algiers subway restoration

Drytech has rehabilitated 5 tunnels and 5 stations of the Algiers metro, for a total of 4 km.

The proximity to the sea exposes the structure to a water table of 6-8 meters.

During the construction phase, various systems were used to waterproof tunnels and stations, but none of these managed to guarantee 100% waterproofness.

Hence the need for definitive reorganization. The Algerian Ministry of Transport has commissioned the Eurometro Society – London consultants specialized in the subway sector – to identify a solution to the problem of infiltrations.

After a worldwide survey, Eurometro proposed the Drytech Restoration System, based on injections from the inside of the DRYflex acrylic resin structure.

The Line 1 tunnel is made up of 10 meters long waterproof concrete segments, connected by 2 recovery joints interspersed with an anti-seismic movement joint.

Waterstop tapes were inserted into the joints, which only worked in 45% of the joints.

The joints of the adjacent structures, of the stations, of the ventilation ducts etc., were instead waterproofed with bentonite expansive profiles, the expansion of which however proved to be limited compared to the shrinkage of the concrete.

Even the jet shots at the air intakes showed infiltrations.

The thermal changes to which they are naturally exposed produce structural movements that split the polyurethane used to waterproof them.

Polyurethane, in fact, being semi-rigid and adhesive, undergoes the movements of the structure and, when they are particularly large, it cracks or loses adhesion.

Finally, shrinkage cracks were produced in the concrete which represented as many points of permeability of the structure.

The Drytech renovation was cataloged with the REAL system of Sir of Turin.
The application creates a virtual reconstruction of the structure, with all the information relating to the remediation intervention.

An X-ray that allows a quick and interactive consultation of images and data relating to the individual interventions performed.

Hanging swimming pool, Ascona

Overlooking Lake Maggiore, immersed in the woods above Ascona, the house with a hanging pool designed and designed by engineer Bonalumi for himself.

The pool occupies part of the top floor and, from the water, the view sweeps across the entire lake.

The bottom of the pool is the slab of the master bedroom.

The structure is a Drytech Tank in exposed waterproof concrete, with the edge of the pool completely covered with the Drycoat waterproof covering.

Project: Pianifica SA, Locarno

Pool and aquatic garden, Vernate

Infinity pool surrounded by an aquatic garden, also infinity.

With a breathtaking view of Lugano Lake, this suggestive swimming pool is a Drytech Tank with three walls against the ground and one – on the lake side – completely exposed.

Project: Franzi and Canetta Architects, Noranco

AlpTransit Control Center, Pollegio

The Polleggio Operation Center manages the railway traffic of the Gotthard and Monte Ceneri base tunnels.

Known as “The Periscope” for its futuristic architecture, the POC is one of the four SBB operating centers in Switzerland, together with the ultra-modern centers of Lausanne, Olten, Zurich.

Height and shape of the building are the architectural response to two functional constraints.

The POC marks and declares the entrance to the Gotthard base tunnel. It is a symbol.

To be perceived as such by the railway and the motorway it was developed in height.

The second constraint is the dimensional incompatibility between the control room and the type of an office building, which has led to accepting the contrast and expressing it in a radical way. Thus, the double-height slab of the control room is grafted onto a trunk of office space, arranged diagonally on the lot.

The POC therefore appears as a sculptural object animated by a twist between the two volumes.

Seen from a moving vehicle it transforms, changing its proportions and offering different states of balance.

Client: Canton Ticino logistics section

Project: Architect Bruno Fioretti Marquez, Berlin

Structure: Ingg. Borlini & Zanini, Pambio Noranco

Construction: CSC, Lugano

Waterproofing: Drytech Ticino, Bedano

Drytech Tank: 711 m²

CPC Gym, Chiasso

The CPC double gym in Chiasso is the victory of lightness over weight, interaction over separation, flexibility over rigidity.

The duality between the podium and the covering volume of the room is defined by a detachment, produced by a punctual support on all four sides.

Through this suspension, the monolithic volume appears very light, to the point of seeming to be held back – rather than supported – by the four lateral Vs.

The detachment connects the interior space with the urban and natural elements that surround the gym. An interaction that places it in the context of the school and cultural campus, weaving various relationships with the peculiar elements of the place.

The building reacts to different situations and topographical differences. To the north it has an access terrace, in relation to the school buildings and access from the public car park. To the south, a flight of steps in relation to the small garden.

A delimitation of the road field and the existing square to the east. Finally, it is at the same level as the m.a.x Museum and the Spazio Officina, sharing their public vocation.

The podium is a Drytech tank. The insulation of the internal facades is protected by an exposed wooden strip in the lower part and by an acoustic paneling in the upper part.

From an energy point of view, the building meets the criteria of the Minergie standard.

Client: Canton Ticino logistics section

Project: Architects Nicola Baserga and Christian Mozzetti, Muralto

Structure: Engineers Andrea and Eugenio Pedrazzini, Lugano

Construction: Mafledil, Osogna

Waterproofing: Drytech Ticino, Bedano

Drytech Tank: 2’128 m²

Mantegazza Palace, Lugano

Drytech tank system for the 5 floors of the underground car park of Palazzo Mantegazza, 15 meters from the lake, in the presence of a water table of 18.80 meters.

The basement was built in underlay, using the hanging formwork technique: after the completion of the diaphragm walls, the slab of the ground level is cast, leaving openings through which it is possible to dig up to the level of the slab -1.

Then the formwork already used for the zero slab is lowered and, once it has reached level -1, the new slab is cast on it. And so on up to the bed, at level -5.

The walls of the Drytech Tank are made directly against the diaphragm, obtaining both the lining and the wall itself in a single casting.

Project: Camponovo Architects & Associates, Breganzona

Structure: Studio Ingg. Mantegazza and Cattaneo, Sorengo

Construction: Garzoni SA, Lugano

Waterproofing: Drytech Switzerland

Drytech Tank: 6’600 m²

Gym, Massagno

This is the story of a beautiful elementary school from the 1960s that wants to continue to be beautiful in the new millennium. Where beautiful means adequate to the needs of modern pedagogy.

With this objective, the project by the Durisch + Nolli and Giraudi Radczuweit Architetti studios proposed the integral maintenance of the body of the school designed sixty years ago by Arch. Finzi, updating it through a process of reorganization, adaptation and expansion.

The spaces have been rethought on the needs of contemporary teaching, which requires larger classrooms to allow for dynamic teaching, with flexible spaces divided into different areas of activity.

The school complex was then expanded and completed with the construction of a double gymnasium and a canteen for pupils and teachers.

The double gymnasium dug into the ground made it possible to maintain a proportionate volume with the school building.

The hypogeum consists of a 4,000 m² Drytech tank structure, impermeable to both water and radon.

The roof of the gymnasium, on which the new school canteen also stands, is a completely accessible space: a large public square also for the use of the population.

Among the different access routes to the level, the long staircase perfectly camouflaged in the architectural lines of the south facade stands out for its architectural quality.

The complex is presented as an open system connected with the city, with which it dialogues and interacts beyond the educational function.

The outdoor public spaces are in fact characterized by a great variety of themed places: from the birch park to the basketball court, from the lavender hanging planter to the long pool / fountain that borders the canteen square on one side.

But the school-city integration is confirmed by the extensive mending of the pedestrian connections that characterize the urban fabric of Massagno.

The area is permeable and inclusive and invites to be crossed because it offers direct and safe routes.

The school becomes a daily presence for the whole community.

Property: Municipality of Massagno

Durisch + Nolli Architects, Massagno
Giraudi Radczuweit Architects, Lugano

Structure: Lurati Muttoni Partner, Mendrisio

Construction: Quadri SA, Cadempino

Waterproofing: Drytech Ticino, Bedano

Drytech Tank: 4,000 m²

Expansion of the Frigerio plant, Locarno

Past and future have finally found a point of contact: the DRYset Injectable Waterstop Tape for movement joints.

The addition of a new body to the building of the Frigerio company in Locarno required the opening of a passage between the existing building and the new one.

The underground connection was made waterproof by inserting a continuous waterstop tape in the movement joint between the two bodies.

The DRYset injectable Waterstop Tape adds to the mechanical barrier function of traditional tapes the possibility of maintaining the joint over time, with possible re-injections of DRYflex expansive resin.

The profile of the Waterstop DRYset tape is in fact equipped with two micro-perforated ducts, through which the waterproofing resin can be injected and re-injected.

The tape was prepared in the Drytech laboratory and subjected to joint tightness tests before installation.

Access to the belt for any maintenance of the joint is guaranteed by cannulae accessible from the intrados of the building.

Client: Poncini Holding SA, Locarno

Project: 3G Architects SA, Tenero

Structure: Anastasi engineering firm, Locarno

Contractor: Gamboni and Salmina SA, Gordola

Waterproofing: Drytech Ticino, Bedano

AET, Montecarasso

The new administrative headquarters of AET in Monte Carasso (the Ticino Energy Company) produces more energy than it consumes.

On the one hand it boasts maximum energy efficiency in every technical component inside the building, on the other it produces energy entirely derived from renewable sources.

A positive energy balance, consistent with the corporate mission, which makes it the public building with the best energy performance in the Canton.

Designed by architects Lukas Meyer, Ira Piattini and Francesco Fallavollita, the new administrative headquarters of the Ticinese Electric Company appears impenetrable or transparent, simply matching the point of view.

The core of the building is in fact set back from the modular concrete grid facade. What a surprising optical effect from the outside translates into visual comfort on the inside: the offices are in fact flooded with mostly indirect natural light.

The site is lapped by the Ticino river and a stretch of water has been created between the existing building and the new one.

The underground structure was therefore built with the Drytech tank system: a waterproof construction of 1,190 m², which houses the technical rooms, changing rooms, warehouses and the AET general archive.

Client: AET Ticinese Electric Company

Project: AArch. Lukas Meyer and Ira Piattini, Lugano + Fallavollita, Como

Structure: Tajana & Partner Ingegneria SA, Bellinzona
Spadea and Bondini Sagl, Lugano

Construction: Bossi e Bersani SA, Bellinzona

Waterproofing: Drytech Ticino

Drytech Tank: 1,190 m²