Arched, translucent covers for sport grounds, swimming pools, hothouses and the like

A translucent arched cover for swimming pools, sport grounds, hothouses and the like comprises

• a supporting structure including a plurality of rigid, arcuate ribs of uniform cross section held in parallel, distanced alignment by a plurality of purlins extending between two adjacent ribs, each said rib being bent from rigid bar material containing an outwardly extending channel and two parallel co-planar flanges on both sides of said channel extending along the outside of said structure,
• a plurality of rectangular panels of a translucent, semi-rigid material of a length slightly shorter than the length of said ribs and of a width coextensive with the distance between two adjacent ribs, each said channel being positioned with its longitudinal margins on and along said flanges of two adjacent ribs,
• a plurality of flexible strips, one strip for each said rib, of a width coextensive with the width of said rib across said two flanges and of a length corresponding to the length of said translucent panels, the ends of each said strip being provided with tension means cooperating with the lower portions of the corresponding rib,
• wherein each said strip is positioned along the outside of a rib covering the margins of said panel or panels positioned on and along said flanges of said rib, and is tensioned on said panel or panels by said tensioning means, thus securing said panels to said ribs by pressure and friction.