The attic shelf platform can be used as a standard or custom designed mezzanine shelf structure that can rapidly expand capacity and provide equipment manufacturers with important space for distribution centers, warehouses, warehouse operations. Attic platform: beam, bar beam structure Bar grid cover and welding IBC rules compatible staircase. The mezzanine shelf beams are made of high quality steel. The joist structure is ideal for large and medium sized lofts requiring large span and high load capacity up to 300 PSF (pounds per square foot). The design allows the mechanical, electrical, and automatic sprinkler systems to be installed in one direction at any level. Bar-grid panels are shown on this platform to provide an open design that meets ventilation requirements and / or complies with fire regulations.