MULTI-SPAN MEMBRANE COVERING Russian patent published in 2006 - IPC E04B7/14 

FIELD: building, particularly coverings for different-purpose multi-span buildings.

SUBSTANCE: membrane coating includes panels connected one to another and supported at corners thereof. Each panel includes support contour and pre-stressed membrane connected to the contour along perimeter thereof. The support contour comprises side flexible members and end transversal beams fastened to them. Each panel is additionally provided with central longitudinal rigid rod having contour defined by broken line and with central transversal beams. The rigid rod and transversal beams are connected one to another, to side flexible members and to three-dimensional truss member. The truss member is connected to edges of end transversal beams and side flexible members at panel corners and to central transversal beam and longitudinal rigid rod in panel center. Membrane is prestressed after side flexible members prestressing. Membrane is arranged above longitudinal rigid rod and spaced a distance equal to 1/30-1/50 of panel span from the rod in panel center.

EFFECT: increased operational reliability due to reduced stress concentration in membrane.

2 cl, 4 dwg