Grain bin flooring

A grain floor with an aeration system for grain stored thereon, said floor comprising:

• an underlying air frame,
• a grain floor mounted on said underlying air frame,
• a plurality of rectangular floor plates, each having a longitudinal direction and supported on the air frame,
• said plates being formed with corrugations extending in the longitudinal direction of the plates and with said corrugations being formed in a drawing operation,
• said corrugations including a top and a bottom wall and downwardly and outwardly inclined walls extending between the top and bottom walls,
• said corrugated plates being uniform in size and being nestable with the corrugations of one plate fitting in the corrugations of the other plate for storage and during transportation thereof,
• said corrugations being less than one-half inch in depth to facilitate broom sweeping of grain from the corrugations,
• a plurality of elongated air holes in the inclined side walls of the corrugations,
• the air holes being elongated in the longitudinal direction of the plates and being located in the middle of the inclined sidewalls of the corrugations,
• upper elongated hoods formed in the inclined sidewalls of the corrugations projecting outwardly from the inclined sidewall and over the holes to at least partially cover the holes to limit the straight vertical drop of grain through the holes, and
• lower hoods projecting from lower edges of the air holes to provide strength to the plate.