Enclosed structure and method of construction

DETAILED DESCRIPTION It is an object of the invention to provide an enclosed structure suitable for containing particulate solids and a method of construction which will overcome, or at least ameliorate, the above disabilities.
Accordingly, this invention consists in 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 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 in a structural manner, and roof cladding being placed over said rafters to form a roof, wherein the ratio of the height 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 within the number of girts per unit length increasing toward the bottom of said wall such that in a lower region of said wall the 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.
Preferably, the lower region is that portion of the wall disposed a distance from the lower edge of less than about 2.
0 to 4.
5 times the calculated girt spacing for maximum desired cladding load at the lower edge of the wall.
In one embodiment the edge flanges of the channel elements are at right angles to the band