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Interiors
Prestressed
Granite
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 length: 49' 2" (15 m) , 11 5/6" (30 cm) thick plate, Hildesheim, 2010, photo: Kirstin Knufmann  length: 49' (14,90 m), 12 7/12" (32 cm) thick plate, Germany, RS Ingenieure, Achern, 2009  |
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a pedestrian bridge made of prestressed granite is: - slender - durable - easy to erect - produced up to a length of 66' request a quote  or call us: 800.919.0080 Slim Footbridges - span-to-depth ratios: 50 - 75 A prestressed granite pedestrian bridge can achieve a span-to-depth ratio as high as 50 or even 75, while a range of 20 to 30 is typical in conventional bridge constructions. The higher the compressive strength of the material, the more prestressing is possible and the slimmer the prestressed element. Granite has a compressive strength several times higher than ordinary concrete. So granite pedestrian bridges can be very slim if they are prestressed. These footbridges are not only ideal due to their reduced height of their solid superstructure: Excellent Surface Quality, Long term performance The sandblasted surface of the prestressed granite pedestrian bridge is very resistant to de-icing salt, weathering and abrasion so that an additional finish or topping slab above the supporting structure is not needed. In comparison to conventional constructions the height of the unit is therefore not only reduced by the prestressing itself but also by any surfacing which is not necessary. The solid prestressed granite superstructure doubles as a factory ready footbridge and in addition has an excellent surface quality. A Prestressed granite pedestrian bridge lasts extremely long, which makes it a truly sustainable way of building a pedestrian bridge. Short Production and Installation periods In addition to their long life span a prestressed granite bridge is desirable due to short production and installation periods. The complete structure is prefabricated in the factory and is tested with the specified load. At the construction site Kusser Graniteworks USA installs the pedestrian bridge superstructure within a few hours. Prestressed granite footbridges are supplied as a turn-key solution from one source, including all required static calculations, complete production and installation. Optional corings, attachments and hardware are possible. At present single slab prestressed granite footbridges up to a length of 66' are produced. A prestressed granite pedestrian bridge is low maintenance. call us: 800.919.0080 > pdf (6 MB) Prestressed granite pedestrian bridges request a quote or further information on a prestressed granite pedestrian bridge |
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