Mind the gap

2019-03-08 06:14:06

A company in Tblisi that goes by the name of Georgian Polytechnical Intellect (sic) has devised a temporary bridge for rivers or rough terrain (WO 98/41692). The bridge is made from a series of rectangular sheets moulded to form rigid arches. Each arch has a flat pivoting base at one end which sits on the ground or in the water. The free end rests against the curved surface of the neighbouring sheet. The result is a series of overlapping arches, creating a bridge with a rather bumpy upper surface. This is good enough to walk across,