overpass road or rail ring modules prefabricated concrete, interconnected with structural joints watertight.

摘要

the prefabricated modules (2) the composition of the overpass have head-on and even height of frame and vertical complementary (5 and 6).used water - stop (8, 9) and are always far and partially in view from recesses (10 and 110) open on the inside shoulderof metal beams (13 - 113) connected to the internal armor modules and then are fixed each other by welding, with plates of carryover (17).the vertical groove which contains the said beams with plates of junction is then closed with a kerb (20) of emaco.on the wall below and internal (12) forms.are the tools of armor (22) to be incorporated into an insole of reinforced concrete (23, 24), which will be built the paving stones (25).the forms of the bridge support inferiormente on panels (4) on bentonite sodium, covering a sottofondazione army (3).the bridge is completed by a sealing superiormente external sheath (26) and bituminous protection (27 and 28), tnt, and cembonit.vertical junction areas of modules can be provided of the conduits (21) to inject the same in the emaco.