Shelving or rack-supported mezzanines are either fully or partially supported by shelves or racks. The racks and shelves that support the mezzanine are typically close together. There are two common variations of shelving/rack-supported mezzanines.
Catwalk mezzanines are ideal for increasing the capacity of tall shelving or rack storage areas, allowing the upper areas of the racks to be accessed from catwalks extending from the mezzanine floor. In many cases, existing shelving uprights provide adequate support for the mezzanine frame. Where needed, support columns can be used to provide additional support, both between shelves and under areas of the mezzanine that are free of racks or shelves.
Full mat mezzanines combine features of both freestanding and catwalk styles, and are typically supported by existing shelving or rack uprights that do not extend above the mezzanine floor. The second level is open area and can be used for bulk storage, office space, employee cafeterias and a number of other applications. Full mat mezzanines can be installed over existing shelving or rack uprights.