Abstract
A storage facility (1) having a plurality of storage racks (R) and storage rack levels (3) for storage of load units (T), wherein two storage racks (R) have an aisle (2) between them, each storage rack level having running rails on the opposing faces of the storage racks (R), on which at least one storage and retrieval apparatus (5) may travel the length of the aisle (2). Each storage and retrieval apparatus (5) having a first set of four traveling wheels for traveling along the running rails horizontally along the respective storage rack level (3) of an aisle (2). Each storage and retrieval apparatus (5) has climbing means for vertical movement, along vertical climbing chimneys, that include vertical climbing rails (15). The climbing means of each storage and retrieval apparatus (5) include a set of four climbing wheels (16) for interaction with the vertical climbing rails (15). The storage facility additionally includes maintenance platforms (14) arranged in a maintenance area (14A) at the other side of the storage rack or side opposite to that where the climbing rails (15) are positioned.