e-mosty December 2017 MSS and Formwork Travellers | Page 39

Figure 3: OHMSS opened external formwork
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the rebar U-cages (bottom slab and webs) of
the deck must allow for assembly in 12 m
sections and in the final position using the
transport devices that equip the OHMSS;
the sections of the rebar U-cages of the deck
must allow for lifting from ground level or as an
alternative, be transported over the deck that
has already been built and later moved through
the inside of the OHMSS main structure
through its rear support;
the deck shall be concreted in two phases, the
first phase involving the concreting of the
central box using the OHMSS, the second phase
involving the installation of the pre-fabricated
struts of the deck wings and the concreting of
the wings itself using the WFT;
 allow for the OHMSS to move backward to the
abutment and proceed with a side-shift to the
alignment of the second deck parallel to the
first one;
 allow for the passing of the OHMSS through the
WFT, after dismantling the OHMSS external
formwork and without needing to dismantle the
WFT (only its 4 legs are dismantled);
 allow for the forward movement of the OHMSS
passing over the deck of the central bridge to
the opposite shore of the Vistula River.
Figure 4: OHMSS lifting rebar U-cage from ground
4/2017
Figure 5: OHMSS rebar U-cage feeding from the deck