e-mosty December 2017 MSS and Formwork Travellers | Page 20

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Figure 30: Almonte Viaduct – Arch construction
Figure 31: Almonte Viaduct – 2 deck over the arch
2.6.2.2 Arch construction
The arch was built by form travellers. Pylons were
placed on top of piers P6 and P15 to hold the cables
that anchored the arch girder to the pylons and piers
(Figure 30). The decks were concreted separately, one in one side,
another one on the other side, to compensate the
horizontal forces transferred to the arch and the
consequent deformations Figure 31).
2.6.2.3 Construction of the decks over the arch That MSS then poured the center span, reduced to 30
meters (Figure 32).
The decks over the arch were built by 2 MSS working
almost simultaneously (Figure 31).
Each MSS travelled to the beginning of the decks over
the arch (P6 and P15). Then they were launched for
the first span on the same day.
Figure 32: Almonte Viaduct – Concreting of last span
Figure 33: Almonte Viaduct – Viaduct completed
4/2017