JANSON TRUSS BRIDGES
Janson's Truss Bridge system ( code PSB ) is a permanent structure that has been particularly developed for rural areas infrastructure where resources and transport facilities are limited, for emergencies ( floods, earthquakes ) and for peace keeping operations. With its external appearance combined with the high quality durable construction the system has increasingly proved to be an ideal permanent solution for developing countries.The bridge is practical in design, requiring only a limited number of components. The components required can be carried by light vehicles, be handled manually and are fully containerizable. Complete erection by hand, without the availability of cranes is an important feature of the Janson Truss Bridge system. Assembly of the bridge may be carried out using unskilled labour under the supervision of an experienced engineer. The bridge may be erected using the standard cantilever launch methods or lifted in using a crane. Single or multi span bridges may be assembled using standard equipment.