Eelised • Stable and cost-effective for high loads Generous bracket spacings allow large-area formwork units with optimal utilization of the bearing capacity. This leads to extremely economical solutions. • Economical and safe anchoring The M30/DW20 and M36/DW26 climbing cones have been designed especially for single- sided concreting using SKS/SSC in dam construction, and to allow the transfer of high tensile and shear forces into the still fresh, unreinforced concrete. The corrosion-protected cones can be re-used – only the tie rods and threaded anchor plates remain in the concrete. • Simple and flexible planning With PERI SKSF 240 and SKS 180 single-sided climbing formwork, circular structures can also be concreted without undergoing any large planning process. Even use on inclined walls is feasible without any special measures because additional concrete loads or lifting
The French engineer, Paul Séjourne, expressed the most elegant modern restatement of the principles of this most ancient material in his masterpiece bridges of stone, the 279ft (85m) span Pont Adolphe in Luxembourg (1903) and the bridge at Plauen, Germany (1905), which was the longest ever achieved in stone masonry, with a span of 295ft (90m). The beginning of concrete as a major material of bridge construction dates from 1865, when it was used in its mass, unreinforced form for a multiple-arch structure on the Grand Maître Aqueduct conveying water from the River Vanne 94 miles (151km) to Paris. Engineers in the late 19th century demonstrated the possibilities of reinforced concrete as a structural material. With concrete resisting compressive forces and wrought iron and steel bars carrying tension, bridges of dramatic sweeping curves evolved. Today's long-span reinforced- concrete bridges are descended from French gardener
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