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Enclosed structure and method of construction

  • US 4,862,661 A
  • Filed: 09/18/1987
  • Issued: 09/05/1989
  • Est. Priority Date: 04/16/1984
  • Status: Expired due to Fees
First Claim
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1. An enclosed structure suitable for containing particulate solids comprising a plurality of posts set on foundations so as to define the external boundary of said structure, a plurality of rafters extending upwardly and inwardly from each said post to a central point or ridge, a plurality of circumferential girts extending substantially horizontally between said posts so as to define the line of a cornerless substantially circular wall, vertically corrugated sheet metal wall cladding extending the height of said wall and being fixed to the foundations at its lower edge, said sheet cladding being located within the wall defined by said girts and being fastened to said girts, the vertical edges of adjoining sheets of cladding being secured together by connecting means, and roof cladding being placed over said rafters to form a roof, wherein the ratio of the height of the wall to diameter of said wall is less than or equal to 1.0 and each said girt is formed by a plurality of elongate channel elements joined substantially end to end, said girts being disposed at intervals along the full height of said wall with the number of girts per unit length increasing toward the bottom of said wall such that in a lower region of said wall and girt spacings are less than the calculated girt spacing for maximum desired cladding load at the corresponding part of said wall to control the deflected profile shape of the wall cladding between the fixed lower edge and the expanding upper region of said wall, said lower region being that portion of the wall at a distance from said lower edge of said cladding of less than about 2.0 to 4.5 times the calculated girt spacing for maximum desired cladding load at said lower edge of said wall, the spacing to the first lower most girt from the foundation being about 0.4 to 0.6 S, the spacing to the second girt being about 0.5 to 0.7 S, the spacing to the third girt being about 0.55 to 0.8 S, the spacing to the fourth girt being about 0.6 to 0.8 S, and the spacing to the fifth girt being about 0.8 to 1.0 S where S is the calculated girt spacing for maximum desired cladding load at the corresponding part of said wall.

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