Attività - Apparecchiature antisismiche

Alga is an engineering company working in the field of civil and buildings construction for over 50 years in Italy and worldwide. Alga is known and appreciated throughout the world for its bearings, expansion joints, anti-seismic devices and postensioning systems.

Alga was founded in 1969 initially working in the design, supply and installation of bridge bearings and expansion joints. Alga later began to develop innovative anti-seismic technologies coming to be the first company in Europe to apply these technologies by isolating the Telecom head office in Ancona with High Damping Rubber Bearings 1987.


Alga is today a leading company in the design, technical assistance and supply of anti-seismic and energy dissipation devices in Italy and worldwide. Alga was the first Italian company to sliding pendulum systems in 2007 to isolate the Golden Ears Bridge in Canada.

In the field of postensioning Alga has inherited the experience of Preco and Prebeton Cavi, both companies being already leader in this field in Italy since the '60s. Alga has merged this prestigious companies, already holding several patents and a their own postensioning system, helping to keep alive the know how and continue their activities. Thanks to the deep experience gained through years of construction activities, Alga is very active also in the market structural repairs and retrofitting in both civil construction and buildings.


Alga holds numerous patents for innovative products and components in the field of the bearings, expansion joints and anti-seismic devices.


Alga is available to construction companies and designers by providing technical assistance to ensure a high level of technologically advanced solutions. The technical department in collaboration with the testing laboratory is constantly engaged in Research and Development of new products and innovative solutions.


ALGA is currently directed by Agostino Marioni, who is also president of the European Technical Committee for Standardization of bearings (CEN-TC167). The active participation of Alga in associations and committees has made a strong contribution to the recent development of European regulations governing the design, manufacture and supply of bearings, postensioning systems and anti-seismic devices.

ALGA manufactures and installs under a quality system complies with ISO 9001 certification IGQ.