Patent ID: 8549792
Filing Date: 2013-10-08
Classification: E04H

Abstract:
1. A protective shelter comprising opposite outer supports and a roof structure extending between the outer supports, wherein the roof structure comprises a plurality of tray members arranged to receive earth, sand or aggregate material defining an inner skin to provide a first level of protection in the roof structure, and the tray members are arranged to be slotted in between neighbouring transverse beams and supported by the transverse beams, wherein the transverse beams are arranged to be supported at respective ends by the opposite outer supports and wherein the transverse beams form a transverse beam bridge across the shelter such that the height of the shelter centrally, and away from the opposite supports is substantially the same as the height of said outer supports, further comprising a second laterally extending layer, spaced from and above the tray members and arranged so as to define a pre-detonation screen.