The steel frame columns are H400200, and the steel beams are the same H-shaped steel. The purlins are C-section purlins, specifically 1605520. The metal roofing utilizes 0.6mm thick colored steel roofing sheets. A distinctive feature of this Philadelphia factory’s design is the need for robust bracing between columns due to the area’s high wind conditions. Simple, single column bracing is insufficient to guarantee stability, requiring a combined, multi-element bracing system.

To enhance the factory’s overall wind resistance, we employed a multi-row, cross-braced combined bracing structure between columns. This design not only increases the bracing’s stiffness but also effectively distributes wind loads, preventing localized stress concentrations. The bracing material also utilizes high-strength steel and undergoes precise mechanical calculations to ensure its load-bearing capacity meets design requirements. At the bracing connection nodes, we used bolted connections, with strict control over bolt diameter, quantity, and tightening torque to ensure connection reliability. These details are well illustrated in my 3D modeling renderings.

Regarding wall and roof insulation, we considered the local climate. Exterior walls utilize lightweight mineral wool board for insulation, with gypsum board as the interior finish, achieving good thermal insulation and reducing the factory’s energy consumption. The roof utilizes high-reflectance colored steel roofing sheets, effectively reducing summer solar radiation heat and lowering indoor temperatures.

Due to the presence of drainage gutters on both sides of the factory, a slight slope was applied to the ground to prevent water accumulation. The gutter slope was also carefully calculated to ensure smooth drainage and avoid potential problems caused by blockage. The placement of the downspouts has been optimized to avoid pedestrian walkways and ensure safety. This roof slope design, at 5%, is a common practice within the steel structure industry.

Regarding lighting and ventilation, we fully utilized the factory's 5-meter clear height. Window layout and sizing have been rationally designed to maximize natural light intake, reducing lighting costs and improving ventilation conditions. To meet the cleanliness requirements of the production process, we also considered installing industrial ventilation equipment to ensure air quality. To ensure uninterrupted production during the harsh Philadelphia winters, a double-glazed, insulated glass unit system within aluminum alloy window frames was implemented.

Throughout the entire 3D modeling process, we paid particular attention to detail. From the connection methods of steel structure components to the texture rendering of wall materials, we strived to accurately reproduce reality. Through rendering techniques, we simulated the factory's appearance under different lighting conditions and adjusted colors and materials to achieve the best visual effect.

The final rendered effect diagrams not only showcase the factory's overall shape and structural characteristics but also demonstrate our team's expertise in steel structure design, 3D modeling, and effect diagram creation. This paper mill project fully demonstrates the application advantages of steel structure factories in industrial construction and provides a reference for similar projects. We believe that through our efforts, we can create safe, beautiful, and practical modern factories for our clients, contributing to their business development. I am 3D designer Zhangteng. Please feel free to consult me with any questions regarding steel structure factories. I'm happy to answer these architectural questions. Please do not consult me on interior decoration; it's outside my area of expertise. My focus is on exterior steel structure engineering.

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