Buildings Freyssinet first introduced post-tensioned concrete floor slabs in the UK in the early s. For nearly 40 years, Freyssinet has been at the forefront of post-tensioning technology, contributing to its acceptance as a standard technology and its consequent increase of utilisation in structures all over the world. As a civil engineering specialist, Freyssinet offers an integrated service, from anchor and floor design to production and installation, utilising an in-house design team and experienced site managers and operatives. Birmingham Library Prestressing solutions Prestressing by post-tensioning has become increasingly widespread in the building sector, as architects, developers and design offices utilise its benefits to design and construct buildings Contemporary architectural trends favour large uninterrupted floor areas and flexible internal layouts that are easy to modify and move around in, while fundamentally being durable and functional. These multiple requirements can be met through prestressing by post-tensioning, which makes it possible to achieve large unobstructed spans with a minimum number of columns and reduced floor thickness.
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Brochure Post-Tensioning Post-tensioning is a method of reinforcement employing high-strength steel strands or bars, which enable the existence of longer clear spans, thinner slabs and in many cases of structural systems that would otherwise be impossible due to either site constraints or architectural requirements.
PT Applications are: Bridges, including major cast-in-place and precast structures, using various construction methods such as balanced cantilever, span-by-span, cable stayed, incrementally launched, and typical highway interchanges and overpasses as well as airport taxiways. Concrete offshore gravity based platforms.
Circular containment tanks for LNG, water, materials, etc. Nuclear containment buildings. Post-tensioned concrete buildings, parking garages, office buildings, multi-unit dwellings and industrial structures. Special applications requiring unique applications such as electrical isolation, adjustability, future removal etc.
Compactness—Anchorages which allow for better diffusion of prestressing forces, thereby reducing the web thickness and dimensions of anchor blocks and recess dimensions. Efficient Installation—The C-Range is very user friendly due to its compactness, lightweight anchorage components and development of very efficient and reliable installation stressing and grouting equipment and procedures.
The F-Range is normally used with flat ducts to optimize the eccentricity of the prestressing in members with shallow structural depths, yet still maintains the advantages of its predecessor with its compactness and light weight characteristics.