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Consolidation with anchorages



If we leave out major catastrophes (natural or man-made), the main cause of structures decaying or exhibiting deficient behaviour can be directly or indirectly related to foundation flaws.


This is why foundation consolidation and strengthening techniques are so important when rehabilitating buildings and structures.


Stap  has been acquiring valuable experience in the use of different foundation engineering techniques to consolidate and reinforce infrastructures. Stap  has drilling equipment suitable for rock or soil, and is capable of working with: Injected micro-piles, root piles, anchorages, and nailing.


The modular design of this equipment, capable of passing through openings 0.7 m wide with a clearance of only 2.5 m, makes it ideal for consolidating existing constructions.


This technology is most commonly used for anchorages, and Stap  has wide experience in implementing this type of project.


In very general terms, it consists of inserting a steel tendon into a hole previously made in the ground. This tendon is sealed into the ground according to the geotechnical conditions and the project specifications.


In order to fully comply with its quality objectives, Stap  always uses a technology known as selective repetitive injection (SRI) to execute anchorages in the ground. This is the only way to ensure the effective creation of a sealing bed, essential for the anchorage to function properly.


Stap  is particularly well equipped to execute this type of job in inaccessible places where it is hard to install drilling equipment.

  • Strengthening the foundations in an ancient building in Lisbon using mini-piles.

  • Driving a "Manta Ray" post-stressed anchorage into the ground.

  • Consolidation anchor assembly.