These umbrellas helped so much to avoid the deadly heat of the sun. I can imagine how much one umbrella would cost, not less that 200,000 Dollars perhaps. Premier Composite Technologies was commissioned to build mosaic tiled, external claddings for 250 foldable umbrellas for the Medina Haram Piazza. These umbrellas provide a convertible roof that shelter 106,000m2 of the piazza from the elements and also improve climatic conditions. One single open umbrella structure spans an area of 625 m². When closed, the arms cover the membrane while additional claddings on top of the arms form a prismatic casing to protect the folded membrane. The arm claddings and cladding attachments are built from a lightweight composite sandwich structure of glass fibre epoxy resin laminate, providing high torsional stiffness. They are then fixed to the flexible umbrella arm systems.