Forge Fire’s Interior Straight Run Stair System is PE-designed, stamped, and fabricated to support full firefighting tactical loads within NFPA 1402-compliant Class A training structures. This all-steel stair assembly provides a direct, single-flight connection between levels—ideal for core tower access and interior movement under live-fire conditions. Engineered for structural integrity and heat exposure, each stair system includes anti-slip treads, handrails, and closed-rise construction for safe footing during zero-visibility operations. Designed for easy integration with modular container layouts, the Straight Run Stair can be paired with mid-level landings, mod decks, or mezzanine systems to create realistic multi-story interior access routes.
