Roof for manure storage tank

Abstract

The present invention relates to a roof adapted to cover a manure storage tank. The roof comprises a plurality of trusses and sheeting members. The roof is constructed so as to minimize the lateral forces on the manure storage tank and to eliminate vertical forces on the centre point of the floor of the storage tank.

1 . A roof for a generally cylindrical wall structure, said roof having a frusto-conical configuration and comprising a central, tubular hub and plurality of trusses extending radially outwardly therefrom, each of said trusses having a proximal end and a distal end; the proximal ends of said trusses being connected to said central, tubular hub; each of said trusses comprising parallel upper and lower beams spaced apart and secured together by generally V-shaped chord members and intermittent vertical connecting members extending normally to said upper and lower beams; a plurality of support beams extending normally between adjacent upper beams of said trusses; said upper beams and said support beams forming an upper surface of the roof; a covering for said roof comprising sheeting members secured to the upper surface of said roof; and plate members having low frictional surfaces located intermediate the lower edge of the roof and an upper surface of the cylindrical wall structure covered by the roof.  
   
   
       2 . The roof of  claim 1  further comprising means to secure said roof to the upper surface of said cylindrical wall structure.  
   
   
       3 . The roof of  claim 1  further comprising a generally cylindrical reinforcement member secured adjacent the lower edge of said roof.  
   
   
       4 . The roof of  claim 1  wherein said plate members are made of polyethylene.  
   
   
       5 . The roof of  claim 1  wherein said sheeting members are comprised of stainless steel.  
   
   
       6 . The roof of  claim 1  further comprising an access door to said cylindrical structure.