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Waterproofing rooftop swimming pool

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The hanging pool and the lawn on the waterproof concrete slab of the Drytech White Tank

The waterproofing of a rooftop swimming pool can result in the bottom of the pool coinciding with the floor slab underneath.

This is the case of the scenic swimming pool at Villa Poiana on Lake Ceresio, built with the Drytech Tank waterproof structure.

The architecture of Villa Poiana frames different views of the panorama offered by this corner of the Ceresio, transforming them into as many spectacular views.

In particular with the exposed concrete beams that define the patios on the first and second levels of the villa.

The building designed by the architect Mischa Groh is composed of two superimposed bodies, rotated by 30 degrees relative to each other.

The slabs are connected to each other alternately on the right and left side, drawing the facade as a schematic Z.

The large à jour windows are set back from the front of the facade. In addition to guaranteeing comfortable shade to the interiors at the zenith hours, this solution enhances the powerful design of the villa through the contrast between light and dark.

The façade is in exposed concrete, made with formworks composed of narrow boards that ripple the surface, producing a warm material effect.

The roof of the lower body is the base of the lawn of the upper villa, in which the scenographic hanging swimming pool built with the Drytech Tank is immersed.

For swimming pool structures in contact with chlorine or salt water, Drytech has developed a specific concrete recipe that resists aggressive agents.

The structure of Villa Poiana follows the slope in which it is set, so all the walls of the shafts on the side of the rock were made with Drytech Waterproof Concrete and with the waterproofing of the details with Drycoat flaps, the elastic and continuous waterproof covering that adheres and adapts to the structure like a second skin.

Project: Architetto Misha Groh, Melide

Structure: Ing. De Bernardis, Massagno

Construction: Garzoni, Lugano

Photo: Sabrina Montiglia, Lugano

Drytech Tank: 1,310 m²

Rehabilitation waterproofing of the Milan metro

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renovation of some sections of the Milan Metro

Drytech carried out the rehabilitation waterproofing of several sections of the Milan metro during the night-time 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 floor and the inverted arch, for the entire thickness of the concrete structure of the tunnel.

DRYflex Resin is effective even in the presence of pressurized water. This made the intervention possible despite the huge extent of the infiltrations.

MM Line 2 was built between the 1960s and 1970s without waterproofing, because the water table was much deeper.

The closure of Milan’s manufacturing activities in the 1980s reduced water consumption and caused the groundwater level to rise up to the Line 2 tunnels.

The infiltrations were controlled by pumping systems active 24/7, but in periods of heavy rainfall some sections were still flooded.

It was therefore decided the renovation of some tunnels of the Milan Metro, carried out by Drytech during the night traffic closure.

Client: Metropolitana Milanese

Waterproofing of a Brutalist building

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Domus Adriana was born in the seemingly narrow path of physical and architectural limitations and, like a stream in a gorge, it is precisely from obstacles that it draws energy and meaning.

The waterproofing of the large podium of a Brutalist building can only be in fair-faced waterproof concrete.

Domus Adriana was born in the seemingly narrow path of physical and architectural limitations and, like a stream in a gorge, it is precisely from obstacles that it draws energy and meaning.

A project designed by constraints.

Like the land located 9 meters above the street level, an existing building in grey concrete with which to communicate and, again, the absence of surface access to the road.

The architect Edy Quaglia has in fact decided to design a free form, which refers only to its own volume. A monolith characterized by an empty entrance, which connects the entire volume with the street below.

The clients of the work are the owners of the Taddei di Viganello construction company. Domus Adriana was therefore required to also be an expression of their professional quality and their passion.

In this sense, facing concrete is the most effective choice, because it literally leaves the builder’s work bare, showing his skill and care without filters.

However, the proximity of another concrete building presented a context problem, which in turn proved to be a powerful opportunity.

To mark the gap between the two buildings, the concrete was in fact colored red and, consequently, rough formworks were used, laid horizontally.

In addition to defining the identity of Domus Andriana, this choice has enhanced the dialogue between the two buildings.

The coloring and horizontal formwork also characterize the space between the volumes and, in particular, the elevator walls and open stairways.

An architectural continuity that brings out the idea that the void separates the two volumes of the building, but formally unites them, emphasizing the fixed scene.

Domus Adriana is spread over seven floors, three of which are completely underground and four resting on the natural ground, divided into apartments.

The hypogeum is a waterproof structure made with a 1,540 m² Drytech Tank, which houses cellars and laundries for each apartment, the technical rooms and two garages with direct access to the street.

Owners: Fulvio and Adriana Pagnamenta, Cureglia

Project: Architetto Edy Quaglia, Lugano

Structure: Ing. Fulvio Pagnamenta, Cureglia

Construction: Taddei, Viganello

Drytech Tank: 1,540 m²

Photos: L. Crivelli, A. Vitiello, G. Pagnamenta

Waterproofing of tanks in wastewater treatment plants

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The Rozzano wastewater treatment tanks of the Rozzano wastewater treatment plant are made of the waterproof structure Drytech White Tank.

The waterproofing of tanks in wastewater treatment plants presents a double challenge for watertight systems.

This type of structure must in fact guarantee double impermeability: to the external water table and, obviously, to the water treated inside the tank.

The Rozzano Purification Plant is also located on a narrow strip of land between the southern course of the Lambro river on one side and a canal on the other, in the south-east area of ​​the Smeraldino Oasis.

So the theme of the watertightness of the work is, if possible, even more sensitive due to the environmental implications.

Made by the Intesa Costruzioni company in collaboration with Drytech, the new purification tank was built in just 120 days with the Drytech Tank system.

The waterproof concrete was formulated by Drytech Engineering based on the characteristics of the system chosen by the construction company, with the aim of ensuring, in addition to watertightness, chemical resistance to urban waste.

Similar resistance is obviously required for DRYflex resin, which, being expanding, waterproofs joints, cracks and crossings by pressure.

The resin is injected along the entire thickness of the structure, so it opposes the water with a corresponding barrier.

Furthermore, the compatibility of DRYflex with drinking water – certified by compliance with BS 6920-1: 2000 – allows for guaranteed use in structures in contact with drinking water.

The new tank of the Rozzano Purification Plant, which came into operation in February 2019, has a capacity of 1,700 m³ and treats a maximum flow rate of 360 m³ / h.

Ownership: CAP Holding SpA, Assago

Progetto: Ing. Marco Callerio di CAP Holding, Assago

Struttura: Ing. Bernardo Vanelli, Castelleone

Costruzione: Intesa Costruzioni, Treviolo

Drytech Tank: 1,100 m²

Waterproofing of Algiers metro

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Drytech technicians prepare for the waterproofing renovation of 5 tunnels and 5 metro stations in Algiers

Drytech restored the waterproofing of 5 tunnels and 5 stations of the Algiers metro, sealing over 4 km of underground tunnels.

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 company – 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 rehabilitation intervention for the waterproofing of the Algiers Metro 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.

Waterproofing of the iconic fair-faced concrete roof pool

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The iconic hanging swimming pool in exposed concrete, with a glass wall overlooking Lake Lugano, is the emblem of the Drytech Tankl, which enhances the purity of lines of the project by architect Edy Quaglia.

The waterproofing of the iconic fair-faced concrete roof pool, with its glass wall overlooking Lake Lugano, is the emblem of the Drytech Tank system.

Form and function coincide, just as the waterproof concrete structure corresponds exactly to the purity of lines of architect Edy Quaglia’s design.

The edges of the pool and the walkable areas are waterproofed with the continuous Drycoat, which adapts like a second skin to the surface.

Project: Architetto Edy Quaglia, Lugano

Construction: Garzoni, Lugano

Drytech Tank: 40 m²

waterproofing the basement of the villa

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Single-family villa designed by architect Silvia Casanova, with the podium made of Drytech Weisse Wanne waterproofing.

The waterproofing of the basement level of the iconic villa designed by architect Silvia Casanova was carried out with the Drytech Tank System, because the clay quality of the soil favours water stagnation, making structural waterproofing necessary.

Immersed in nature, the red house in Cureglia is also very green inside.

The production of energy is entrusted to an air-water heat pump, with solar panels for the production of hot water and provision for the installation of the photovoltaic system on the roof.

The insulation is guaranteed by an airy structure, made up of a layer of rock wool, a cavity for ventilation and a coating in ecological fiber cement sheets.

The ventilation of the facade prevents the formation of humidity inside the house, which also benefits from a forced ventilation system.

The building stands on land parallel to the road. The north side was therefore conceived as a real screen: thermal, but also acoustic.

The basement level, intended for the garage and technical rooms, was built with the Drytech Tank.

Project: Silvia Casanova, Arch. dipl. ETH, Claro

Structure: Peter Stauffer, Ing. dipl. ETH, Pianezzo

Construction: Edilcapri SA, Tesserete

Drytech Tank: 203 m²

Waterproofing of a rooftop swimming pool

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Overlooking Lake Maggiore, the house with a hanging pool designed and designed by engineer Bonalumi for himself.

Drytech realised the waterproofing of a rooftop swimming pool with the Drytech Tank waterproof concrete structure.

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

Waterproofing Hospital

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The new Sant'Anna hospital in Como is located on an area of ​​over 80,000 m² south of the city of Como and a few hundred meters from the headquarters of Drytech Italia.

The choice of the Drytech Tank as the waterproofing system for the Sant’Anna Hospital in Como ensured a significant reduction of work days in the overall site budget, thanks to the construction characteristics and organisation of the Drytech system.

The activities of the Drytech Tank are in fact parallel to the other activities of the site, so that the waterproofing item has been removed from the work schedule.

The Como Polyclinic has two underground floors exposed to a 2-meter flap, which will also house the operating theaters.

To support the weight of the structure, the site of the construction site was consolidated with approximately 4000 reinforced concrete poles, with a depth varying between 20 and 30 meters.

The poles were thrown into shirts driven into the ground with micro-explosions.

Contractor: Infrastrutture Lombarde

Project: Euro-Project

Structure: Eng. Franco Mola, Milan

Construction: Consorzio S.AN.CO

Waterproofing of a residential complex in contact with the sea

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The conversion of the industrial port area, west of the Genoa airport, also involves the construction of the Borgo alla Marina residential complex.

The Drytech Tank was chosen for the waterproofing of a large residential complex in direct contact with the sea.

When construction was complete, the waterproofing of the underwater level was tested by flooding the site perimeter.

After checking the watertightness of the Drytech Tank, the structure was launched by removing the sheet piling.

The conversion of the industrial port area, west of the Genoa airport, also involves the construction of the Borgo alla Marina residential complex.

200 prestigious apartments, with relative berths and garage, overlooking a new tourist port.

Below the buildings and the square, in direct contact with the sea water, is the covered parking area for residents.

Project: Studio Gnudi, Genova

Contractor: Aurora Costruzioni, Milano