Patent ID: 6282843
Filing Date: 2001-09-04
Classification: E04H

Abstract:
A pneumatic structure in the form of a barrel roof which has openings at the opposite ends thereof, comprising:outer and inner walls of a sheet or membrane material comprising a woven fabric of a polyester or aramid fiber;a plurality of partition walls in the form of ribs provided between, and connecting, the outer and inner walls to define a plurality of air compartments in the form of ribs between the outer and inner walls; anda plurality of openings to allow fluid communication between adjacent air compartments,wherein an internal pressure is at least 0.001 kg/cm.sup.2 -g; andwherein the pneumatic structure has specific dimensions defined as follows:1.20.ltoreq.b/a.ltoreq.1.351.10.ltoreq.d/c.ltoreq.1.350.2.ltoreq.a/c.ltoreq.0.5wherea: a maximum opening width of the pneumatic structure;b: a total width of the pneumatic structure;c: an effective height between ground and a maximum height of the inner wall; andd: a total height between ground and a maximum height of the outer wall.