Structural Steel Mezzanines — Custom Prefab

A steel mezzanine is a prefabricated, free-standing intermediate floor level constructed within an existing building to create additional usable space without expanding the building footprint. Structural steel mezzanines are engineered with steel columns, beams, and decking systems — available in configurations such as free-standing, rack-supported, or shelving-supported — and are designed to meet all applicable building codes.

Structural steel mezzanines are custom-engineered to meet the specific load requirements of each application. They can be designed to support packing tables, quality control stations, conveyor systems, bulk storage, and operational equipment. Load capacity is determined during the engineering phase, and all drawings and calculations are stamped by a licensed professional engineer to verify structural adequacy for the intended use.

The best mezzanine floor surface depends on the application. Common options include bar grating (ideal for ventilation and light-duty foot traffic), resin decking (slip-resistant and durable), B-deck with concrete topping (high load capacity and rigidity), and solid steel decking. Storage Products Company's engineers recommend the appropriate floor surface based on your load requirements, operational use, and budget during the custom design process.

Yes, structural steel mezzanines typically require local building permits. Storage Products Company provides full project management including permit support, and all mezzanine projects include PE-stamped drawings and calculations to satisfy local building department requirements. Custom seismic engineering is also available for facilities in California, the Pacific Northwest, and other high-seismic-risk regions.

Free-standing mezzanines from Cubic Designs — offered through Storage Products Company — can achieve column spacing of up to 35 feet without cross bracing. This maximizes usable floor space below the platform, eliminating obstructive aisles and allowing full integration with conveyors, forklifts, and operational equipment operating beneath the mezzanine level.

Cubic Designs structural steel mezzanines, provided through Storage Products Company, include a Lifetime Structural Warranty. All engineering drawings and calculations are stamped by a licensed, on-staff professional engineer. This combination of a manufacturer-backed lifetime warranty and certified engineering documentation ensures long-term structural confidence and compliance with International Building Code requirements.