vasca drytech

Waterproofing of the London sewage system

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The Lee Tunnel is one of the two pipelines that convey an average of 39 million tons per year of wastewater, coming from 35 sewer pipes, built in the Victorian era as part of the network that still serves London, after 150 years.

Drytech realised the waterproofing of one of the main pipes of the London sewage system with the Drytech Tank system.

The Lee Tunnel is one of the two pipelines that convey an average of 39 million tons per year of wastewater, coming from 35 sewer pipes, built in the Victorian era as part of the network that still serves London, after 150 years.

The works began in September 2010 at the Beckton treatment plant, with the construction of the first of the four 80-meter wells, waterproofed by laying DRYset channels in the joints, then sealed with DRYflex resin injections.

The sections of the 120-meter-long milling machine were then lowered through the shaft, which in 2012 began excavating the connection tunnels, with a diameter of 7 meters.

The infrastructure is part of the strategic plan to improve and ensure the health of the Thames waters. The system routes discharges from London’s largest surplus sewer to Mills Abbey Pumping Station in Stratford, which handles 40 per cent of the total waste.

The four miles of tunnel were built beneath the Borough of Newham, from Abbey Mills to Beckton. The new tunnel helps prevent more than 16 million tonnes of sewage mixed with rainwater from overflowing into the River Lee each year, capturing and transferring it to Beckton’s sewage treatment facilities, which are in turn being expanded by 60 per year. one hundred to cope with the increase in volumes handled.

This is the deepest tunnel ever built in London. This involved excavating in conditions of high groundwater pressures, along four miles of extraordinarily abrasive soil and without lateral vent pipes.

Owner: Thames Water Utilities, London

Structure: Engineer Emmanuel Costes, London 

Construction: Morgan Vinci Bachy JV, London

Waterproofing: Drytech UK, London

Waterproofing of the stage pit of the La Scala theatre

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As part of the renovation and expansion of the Teatro Alla Scala in Milan designed by architect Mario Botta, the waterproofing of the scenic pit was carried out, with 850 m² of stalls and 2,500 of walls.

Drytech carried out the waterproofing of the colossal stage pit of the La Scala theatre in Milan, reducing the Gantt diagram by 90 days compared to a traditional waterproofing system.

As part of the renovation and extension of the Teatro alla Scala in Milan designed by architect Mario Botta, the waterproofing of the stage pit was carried out, with a Drytech Tank of 850 m² of stalls and 2,500 m² of walls.

The Drytech Tank System was chosen because it made it possible to waterproof the tie rods of the unloaded floor.

It also saved about 90 days of work for the entire calendar of works because the waterproofing activities are independent and parallel to those of the construction site and are in fact removed from the Gantt chart.

A further saving of time and resources derives from the fact that the elevations of the Drytech tank are thrown directly against the micropiles, making the lining and the wall coincide.

The new stage tower rises 38 meters and the stage pit is 18 meters deep. The new structure behind the stage allows you to manage the sets of 3 shows at the same time.

Sophisticated stage machines allow you to completely change the show in just 6 minutes.

Client: Comune di Milano, Milano

Project: Mario Botta Architetto, Lugano

Structure: BMS Progetti, Milano

Construction: Consorzio Cooperative Costruzioni, Bologna

Drytech Tank: 3,350 m²

Waterproofing of the Allianz Isozaki skyscraper

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The Isozaki Tower in the CityLife district, inspired by Costantin Brancusi's endless column, has become one of the symbols of the city of Milan.

Drytech designed the waterproofing of all structures below the design water table of the Allianz Isozaki skyscraper in Milan.

Therefore, the fireproof tanks, the plant tunnels, the polyphores and the basements were built with the Drytech Tank System.

The Isozaki Tower, inspired by Constantin Brancusi’s endless column, has become one of the symbols of the city. Designed by the Japanese architect Arada Isozaki together with the Italian architect Andrea Maffei, the skyscraper is the headquarters of Allianz in Italy.

The building, which can accommodate up to 3,800 people, is the tallest skyscraper in Italy by number of floors (50) and according to the highest occupied floor criterion (with its 207 m).

Property: CityLife s.p.a., Milano

Project: Architect Arata Isozaki, Tokyo / Architect Andrea Maffei, Milano

Structure: Prof. Marco Mola, Ing. Michele Cap, Milano / Ing. Francesco Iorio, Bergamo

Works management: In.Pro srl, Torino

Drytech Tank: 7’400 m²

Waterproofing a five-storey underground car park

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Drytech Tank system for the 5 floors of the underground car park of Palazzo Mantegazza, 15 meters from Lake Lugano, in the presence of a water table head of 18.80 metres.

Waterproofing a five-storey underground car park below the level of the lake, with a water table of 18.80 metres.

The underground parking garage of Palazzo Mantegazza in Lugano was built on the lakeshore underwater, using the hanging formwork technique: after the completion of the diaphragm walls, the ground floor slab is cast, leaving openings through which excavation is carried out down to the level of 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 Architetti & Associati, Breganzona

Structure: Studio Ingg. Mantegazza e Cattaneo, Sorengo

Construction: Garzoni SA, Lugano

Drytech Tank: 6’600 m²

Waterproofing below the lake

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The symbiosis between the Hotel Il Sereno di Torno and Lake Como began right from the laying of the first stone. The design hotel has literally risen from the waters of the Lario.

For the waterproofing of the rooms below the lake level and the swimming pool of the hotel Il Sereno in Torno, Drytech Tank waterproof structures were built with construction materials that arrived on site via barge.

The symbiosis between the Hotel Il Sereno di Torno and Lake Como began right from the laying of the first stone. The design hotel has literally risen from the waters of the Lario.

The charming country road that leads to the hotel is in fact not passable by heavy vehicles, so all the material for the construction arrived by lake on board barges.

The dominus of this complex construction site was the architect Fabio Curcio Valentini, construction manager and coordinator of the architectural project of Patricia Urquiola, who also created the contemporary interior design of the Luxury Hotel.

The construction was consolidated with poles placed in the water, and the area dedicated to the technical systems was obtained by digging into the granite rock without using explosives, up to a depth of seven meters below the level of the lake and creating the waterproof structures with the Drytech Tank system.

The old dock was incorporated into the new building of four floors above ground and two underground floors.

The lake-front wing towards Como hosted the underground garage and the heated outdoor swimming pool, also a Drytech tank and covered in Brazilian karst stone.

Project and Interior Design: Architetto Patricia Urquiola, Milano

Works management: Architetto Fabio Curcio Valentini, Como

Garden Design: Patrick Blanc, Parigi

Structure: Studio Faber, Parma

Construction: Costruzioni Carboncini & C., Lomazzo – Setten Genesio, Oderzo

Drytech Tank: 4’335 m²

Waterproofing of the skyscrapers

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The theory of skyscrapers in Milan's Porta Nuova district, the basement of which was built with a 43,730 m² Drytech White Tank waterproof structure.

The waterproofing of the skyscrapers in Milan’s Porta Nuova district was carried out with 43,730 m² of Drytech Tank.

The masterplan of Milano Porta Nuova was signed by the Kohn Pedersen Fox studio of London, while the executive plan is the work of the Arquitectonica IC of Miami and m²P Associati of Milan, for the commissioning of Hines Italia and Galotti SpA.

3,000 m² are destined for the Municipality of Milan to make it a cultural center. The four underground levels, made with the Drytech Tank waterproofing system, house parking spaces for 2,000 cars.

Drytech has built 43,730 m² of waterproof underground structures with the White Tank System, collaborating with the designers of Arup Italia in Milan and coordinating with the CMB company for the preparatory activities for waterproofing which, being parallel to those of the construction site, are in fact been removed from the work calendar.

Owner: Hines< Italia / Gallotti Spa

Project: Kohn Pedersen Fox, Londra / Arquitectonica IC, Miami / m²P Associati, Milano

Structure: Arup Italia, Milano

Works Management: Engineer Coppi, Modena

Construction: CO, VAR: Sarl, Reggio Emilia

Waterproofing: Drytech Italia, Como

Drytech Tank: 43’730 m²

Waterproofing of the underground gymnasium

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The new underground gymnasium of the Massagno school, made with Drytech White Tank waterproofing

The waterproofing of the underground gymnasium of the Massagno primary school with the Drytech Tank structure made it impermeable to both water and radon.

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: Comune di Massagno

Project:
Durisch + Nolli Architetti, Massagno / Giraudi Radczuweit Architetti, Lugano

Structure: Lurati Muttoni Partner, Mendrisio

Construction: Quadri SA, Cadempino

Drytech Tank: 4,000 m²

Waterproofing of the fuel tanks

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The fuel tanks of the service station of the new tourist port of Loano were built ashore by the company PB Lavori Marittimi of Ancona with the Drytech Tank technology

The waterproofing of the fuel tanks of the Loano marina represents the perfect application of the characteristics and qualities of the Drytech Tank.

The tanks of the new Loano harbour were built ashore by the company PB Lavori Marittimi Srl of Ancona in prefabrication on the pier and then launched at sea.

The construction of prefabricated tanks has the advantage of a more practical processing and with a higher quality standard, since the jet in water often produces gravel nests, regardless of the expertise and care of the diving technicians.

Where transport does not constitute an obstacle, the prefabricated tank is therefore preferred.

The tanks were built on the dock of the shipyard area of ​​the new port of Loano and Drytech Engineering collaborated with the designer already in the design phase, for the aspects related to waterproofing and the problems of transporting the tanks.

Made of XS2 exposure class waterproof concrete (submerged constructions in a marine environment), the tanks were again injected on the ground with DRYflex acrylic resin, which waterproofed the joints and shrinkage cracks by pressure. We then proceeded to lift and launch by sinking.

The 4 tanks were then welded with a crowning casting. Also this joint, prepared with the DRYset injection channel, was waterproofed for its entire thickness with DRYflex resin. After emptying it was therefore possible to carry out the final testing.

The Drytech Tank as a whole, and the DRYflex resin in particular, must ensure impermeability from aggressive elements such as sea water.

Construction: PB Maritime Works, Ancona

Waterproofing: Drytech Italy, Como

Waterproofing of the underground passage

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Insertion of waterstop tape in the cut made in the existing wall

The waterproofing of the underground passage connecting the new body to the main factory was realised with 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.

Owner: Poncini Holding SA, Locarno

Project: 3G Architetti SA, Tenero

Structure: Studio d’ingegneria Anastasi, Locarno

Construction: Gamboni e Salmina SA, Gordola

Waterproofing the diaphragm wall of a five-storey underground

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In Piazza Sant'Ambrogio in Milan, the company Borio Mangiarotti S.p.A. built a five-storey underground car park.

Waterproofing the diaphragm wall of a five-storey underground car park with the Drytech Tank system increased the internal volume and the number of available parking spaces.

In Piazza Sant’Ambrogio, in Milan, the construction company Borio Mangiarotti S.p.A. built a five-storey underground car park.

Drytech has designed a waterproofing system for the diaphragm, based on Injectable Waterstop Tapes.

By making the diaphragm waterproof directly, it was not necessary to create the lining wall, thus increasing both the internal volume to comply with the legal limits, and the surface, or the parking spaces available.

The Injectable Waterstop Tape for the joints between the partitions of the diaphragms is a Drytech patent that makes it possible to maintain the joint with ex-post injections of resin, performed in the event of any infiltrations.

The Drytech tape is laid with a special sheet piling which acts as a formwork of the diaphragm wall.

The diaphragm of the parking lot that flanks the Milanese basilica drops to a depth of 22.70 meters and the laying of a sheet pile of this size required special care by the company’s technicians, to ensure perfect alignment of the joints.

At the end of the casting, the sheet pile is extracted, equipped with a new belt and repositioned for the casting of the next septum.

The re-injectability of the DRYflex resin guarantees the possibility of carrying out maintenance on the diaphragm at any time, by intervening from inside the structure, without excavation or demolition and, above all, without having to close the car park.

Client: Comune di Milano

Structure: Ingegner Domenico Insigna, Milano

Construction: Borio Mangiarotti SpA, Milano

Drytech Tank:
Diaphragm: 5,600 m², h 22.70 m
Bed: 3,300 m²