An approach to patents of prestressed concrete in 20th Century’s architecture

ABSTRACT: Around 1906, there was a discussion in the various publications on reinforced concrete about the problem of how to avoid the cracks on it, due to tension that occurred inside. First attempts to avert it failed since the tension applied to the steel was lost with the passage of time, as much for the hydraulic retraction of the concrete as for the use of not very high strength steels, and also because of the stress imposed were insufficient for targeted outcomes.