Storage system

A storage system comprising a storage grid structure and multiple remotely operated storage bin handling vehicles, the storage grid structure comprises vertical storage column profiles defining multiple storage columns in which storage bins can be stored one on top of another in vertical stacks, each of the storage column profiles have an upper end and a lower end and the storage column profiles are interconnected at the upper ends by rails forming a horizontal rail grid upon which one or more bin handling vehicles may move in two perpendicular directions, wherein

• the storage grid structure features grid supports comprising multiple base angle brackets, each base angle bracket comprises a vertical flange connected to a storage column profile, a horizontal flange connected by bolts to a floor upon which the storage grid is arranged and a web interconnecting the flanges, each of the flanges comprises a first end and a second end, wherein the first end is arranged closer than the second end to the lower end of the storage column profile to which the vertical flange is connected, and the web has a recess arranged between the first ends of the flanges;
• wherein the lower end of each of the storage column profiles is arranged upon a levelling foot comprising a horizontally moveable levelling device, the levelling device may extend horizontally beyond a lateral cross-section of the storage column profile, and the recess is sized to accommodate the levelling device.