Stainless Steel Access Hatch FEA Analysis

Stress Analysis (FEA) for 3m × 3m Floor Stainless Steel Access Hatch — 2-Leaf, Pedestrian Load, Through-Bolted to Concrete Project Description I need a structural engineer/FEA specialist to perform a full stress and deflection analysis for a floor-mounted stainless steel access hatch, 3,000 mm × 3,000 mm, two-leaf door, designed for pedestrian traffic. The hatch frame is through-bolted to concrete. Deliver a sealed, professional report suitable for consultant submission. Scope of Work 1. Model & Assumptions Build a 3D FEA model (shell/solid where appropriate) of: Two leaf plates/panels, hinges, latches, frame, and stiffeners. Through-bolts/anchors to concrete Materials: Stainless steel 304/316L ; welds per AWS D1.6 or EN ISO 5817 quality level. Include realistic boundary conditions for the frame bearing on concrete and through-bolt restraint. 2. Loads & Combinations (confirm during kickoff) Uniform pedestrian live load: target 5.0 kN/m² (or 4.8 kPa/100 psf). Concentrated point load: 1.5–2.0 kN applied at worst-case locations (panel midspan, near hinges/latch). Impact/dynamic factor: 1.3 (or per code). Self-weight and any gasket compression loads. Optional: serviceability combinations including partial safety factors per chosen standard. 3. Checks Required Deflection criteria: target L/250 (span of each leaf) or ≤ 5 mm at service load—whichever is more stringent. Stress/strength: von Mises vs. yield/ultimate with appropriate partial factors. Hinge/latch hardware: local stresses and fastener checks. Weld sizing at stiffeners and frame connections. Anchors/through-bolts to concrete: shear, tension, pry-out, edge distance, spacing—design per selected code Factor of Safety: clearly reported for all critical components. 4. Standards (pick one family and stay consistent) Option A (Eurocode): Actions: EN 1991-1-1 (imposed loads) Stainless steel design: EN 1993-1-4 Welds: EN 1993-1-8 / ISO 5817 Anchors into concrete: EN 1992-4 (or ETA/EAD method) Option B (US): Loads: ASCE 7-22 (100 psf pedestrian) Stainless steel: AISC Design Guide 27 (or similar) Welds: AWS D1.6 Anchors: ACI 318-19 Chapter 17 Deliverables FEA Report (PDF) including: Executive summary with pass/fail vs. criteria. Modeling assumptions, mesh metrics, and boundary conditions. Load cases & combinations table. Color plots: stress, deflection, reaction forces, and anchor demands. Bill of key section sizes/thicknesses with optimization suggestions (plate thickness, stiffener layout). Anchor schedule (type, diameter, embedment, spacing) meeting edge/spacings. Deflection & vibration commentary for pedestrian comfort/trip safety. Native model files (e.g., ANSYS/ABAQUS/SolidWorks Simulation) + DXF/DWG markups of any recommended changes. Calculation sheets (Excel/Mathcad/Python) for anchors/welds (not just FEA screenshots). Inputs I Will Provide 2D/3D drawings of hatch (DWG/STEP if available) Proposed material grade (304/316L), plate & frame thicknesses Hinge and latch datasheets Proposed anchor model (e.g., M12/M16 ETA anchor) and concrete strength class Any consultant-required format Acceptance Criteria Meets the stated deflection limit and stress/FoS per chosen standard. Anchors verified with edge/spacing checks and interaction ratios ≤ 1.0. Clear, reproducible calculations and editable source files. Nice-to-Haves Alternative weight/cost optimization option (stiffener re-layout vs. plate thickness). Brief installation note for concrete edge distances and seal seating. Required Skills Structural engineering (PE/Chartered preferred) Nonlinear/linear FEA of plates, welds, and bolted connections Anchor design to ACI 318-19 Ch.17 or EN 1992-4 Familiarity with stainless steel behavior and weld design What to Include in Your Bid 1. The standards you intend to use and why. 2. Example report for a similar hatch/cover/door job. 3. Proposed deflection criterion and load set. 4. Software & deliverable formats. 5. Timeline and fixed price (separate base fee + optional optimization). Budget Please propose a fixed price for: Base analysis & report Optional optimization iteration

Project ID: 39728598