Peaker Escatron Power Plant – Huesca

Date: 2007
Type of work: Civil engineering


The main difficulty of this project was that it included several levels of beams at height. On each of these levels, the beams were laid out differently, and the last one had beams and a slab. The building process began at the beam level. After three days the columns were made. On the next day, they were stripped and work continued on the next level. The first level was built using Vistaform Slabs. CL-40 Shoring system, recovered from the finished bottom level, plus Vistaform Slabs were used after the second level of beams.

Dowel connections were used to continue raising the shoring system through the successive beam levels. This made it possible to rise up level by level recovering only the Vistaform Slabs without having to remove all the shoring system. The beam support between panels was used to prop up the beams. During the beam stripping process, the supports were propped up with a prop which in turn was resting on the bottom level until they provided the strength required by the project management.

As regards safety, Alsina provided the Alsipercha system, since the layout of the columns on the plan favoured this option. The system was perfectly suitable and received praise from the safety technicians. Finally, 500 linear metres of beams, 2000 m2 of slab and 1000 m2 of wall were built.

Alsina systems: Alisply walls, Alispilar, Alsina cl-40 shoring system, Alsipercha

Processing and recycling plant – Saragossa

Date: 2006
Type of work: Civil engineering


The project consisted of building four digesters with a height of around 18.5 m and a diameter of 15 m. The base of each digester consisted of around 90 thick columns, which had to be made using Alisply Universal. Topping these columns was a slab with a thickness of around 40 cm and a large number of hanging beams, made using Vistaform Slabs since the large number of columns made it impossible to set up the Alumecano system. Once the slab was made, work began on the curved wall. It should be noted that the first step was to form a series of windows that projected from the wall and therefore had a greater thickness.

The first climbing platform was made with the C-160 Climbing Platform for the corbel of the wall. The next climbed platforms were made with the 240 Climbing Platform and Alisply Circular at a height of 5.40 m. The Dywidag bars were cut to ensure the watertightness of the wall, remaining lost in the concrete. The curved wall had 4 post-tensioning boxes, which were dealt with using Corners and Alisply Walls. Once the curved wall was completed, work began on the central spoon. For this purpose, a special wooden element adapted to the Alisply Walls was made. At the front of the spoon, where the radius was very small, shoring system was installed, which was later used to form a 1-m hanging beam. The top slab was also made using shoring system.

Alsina systems: Alisply circular, Alisply walls, Alispilar, Alisply multipurpose, Alisan shoring system, Alsina cl-40 shoring system, Vistaform slabs, Site stair tower, Alsipercha, 3-9 m aligners