Patent ID: 6817444
Filing Date: 2004-11-16
Classification: E01D,E04G

Abstract:
A temporary hermetic structure in combination with a bridge comprising:a suspended floor made up of overlapping sections of corrugated panels; walls of pliable sheet material combined with an undersurface of said bridge and bridge abutments forming an enclosure defining a workspace wherein persons having access to bridge substructure can work to repair and maintain said substructure while containing debris derived from said work; a plurality of vertical hanging cables extending down from said bridge attached at lower ends to a plurality of horizontally extending cables supporting said floor of corrugated panels, ends of said horizontally extending cables being attached to bearing members on said bridge; top edges of said walls of pliable sheet material being secured with the use of C-clamps to girders; exhaust ducts mounted through said walls of pliable sheet material to carry away dust accumulating in work areas.