Modular Steel Emergency Shelter Design

Engineering Design for Modular Steel Emergency Shelter (4’ x 8’ x 7’) Project Overview: We are seeking a qualified mechanical/structural engineer or industrial designer to develop a fully engineered, modular emergency shelter constructed from 1/4” thick steel. The shelter will be used for storm protection / emergency use and must be designed for strength, manufacturability, and ease of transport + assembly. Scope of Work: 1. Structural Design Shelter dimensions: 8 ft (W) x 4 ft (D) x 7 ft (H) Material: 1/4" (6.35mm) steel plate Design must include: Wall, roof, and anchor system Reinforcement strategy Door system (secure, inward swing with sealing) Load-bearing calculations (wind / debris / bullet resistent impact considerations preferred) 2. Modular Design Requirements Shelter must be modular for transport and assembly Panels should be: Bolt-together Sized for manageable handling (no oversized single pieces) Design considerations: Minimize number of parts while maintaining strength Repeatable panel sections preferred Alignment features Gasket/sealing system for joints 3. Fabrication-Ready Drawings Provide: Detailed shop drawings Flat patterns for cutting (CNC/plasma/laser compatible) Weld callouts and specifications Bolt sizes, grades, and locations Material list (BOM) File formats: STEP / IGES (3D files) DXF (cut files) PDF (drawings) 4. Assembly Instructions (User-Friendly) Create a clear, step-by-step assembly guide including: Exploded diagrams Numbered components Required tools Bolt sequence and torque suggestions Estimated assembly time Safety notes This should be simple enough for a non-professional installer to follow. 5. Deliverables 3D CAD model (complete assembly + individual parts) Fabrication drawings Cut files (DXF) Bill of Materials (BOM) Assembly manual (PDF, visual + written) Performance Considerations (Preferred but not mandatory): Designed with tornado / extreme weather resistance in mind Reinforced door frame and hinges that swings inward Anchoring system (to concrete slab) Ideal Freelancer Qualifications: Experience in steel structures, fabrication, or protective structures Strong CAD skills (SolidWorks, Fusion 360, Inventor, etc.) Understanding of modular product design Ability to create clear fabrication + assembly documentation Additional Notes: Simplicity and manufacturability are key Design should be optimized for repeat production Preference for designs that minimize welding and maximize bolt-together construction Must be stamped by engineer.