After 15 months of work, to which will be added 12 months of warranty, this major project has come to an end. Discover it in pictures. The Sahasinaka viaduct is in eastern Madagascar, on the FCE railway line. It allows crossing a breach of about 230 meters in length and 40 meters in height. This mixed project, which lasted 10 years from 1926 to 1936, aimed to open up urban agglomerations and to promote the transport of goods between Fianarantsoa and Manakara. Consisting of a mixed masonry and concrete main structure, as well as two reinforced concrete access structures, the Sahasinaka viaduct was offered repair work.
Adam Bendaoud, head of mission of the group setec tpi, tells us more about it: “In the case of reinforced concrete structures, the aim is to produce concrete projected on the surface, to treat all cracks by injection, to renew the guardrail and, to achieve a watertightness that is lacking in the context of the disorders observed.
As for the main structure, it is a question of reinforcing the two vaults where cracks appear and of taking back the entire waterproofness of this structure by the realization of a slab.” As part of the contract, it was planned to lay the track, and given the condition of the tracks, it was agreed to put in place the track renewal. As for the foundations, following the inspections that took place in 2014, emergency work was required. Through various studies, it was confirmed that it was necessary to strengthen the foundations of the Sahasinaka viaduct.
Discover it in images in the video below. https://web.microsoftstream.com/embed/video/4101974b-9d7b-412e-b86e-3c0bebd7c857?autoplay=false&showinfo=true&forceServerAuth=true