FabCheck: Structural FEA

Design, Analyze, and Build with Confidence.

🛠️ FabCheck is a powerful linear and non-linear 2D Finite Element Analysis (FEA) and structural design tool. Whether you are designing a complex steel truss, checking beam deflections, or planning a custom frame, FabCheck provides a rapid, intuitive, tablet-optimized workflow right on your mobile device.

📱Draw your structures, apply loads, instantly visualize structural behaviors, and generate complete fabrication cut-lists in seconds.

🔓 **UNLOCK THE FULL VERSION:** Say goodbye to recurring subscriptions! Try the app, and unlock the complete, unrestricted version of FabCheck with a single, **one-time purchase** for lifetime access.

⚡⚙️ CORE FEATURES:

• 📐 2D Modeling & Auto-Mesh: Rapidly draw nodes and beams with precision grid-snapping. Bulk-split beams to perfectly redistribute varying loads (UVL) and capture localized buckling. Tap the FabCheck logo anytime for instant help!

• 🔄 Non-Linear P-Delta Analysis: Enable our iterative Global and Local P-Delta solver to accurately capture secondary bending moments, geometric stiffness, and post-buckling sway effects (P-Δ).

• 🚗 Moving Load Simulations: Run step-by-step vehicular live loads across continuous beam paths. The background engine calculates absolute maximum and minimum dynamic force envelopes for Moment, Shear, and Axial forces.

• 🏋️ Loads & Boundaries: Apply point, uniform (UDL), and varying (UVL) loads. Calculate thermal expansion/contraction (ΔT). Easily set fixed, pinned, or roller supports, support settlements, and moment releases (hinges).

• ✅ Automated Capacity Checks: Long-press any beam to view its LRFD Flexural Capacity (ΦMn) and a dynamic PASS/FAIL Unity Ratio progress bar based on material Yield Strength (Fy) and section depth.

• 🔩 Practical Joint Demands: Long-press supports to instantly translate theoretical reactions into shop-ready numbers, including required Weld Shear Capacity and Anchor Bolt Pull-Out (Tension).

• 🔲 Extensive Section Library: Choose from standard libraries or generate exact properties for custom profiles. Directly input custom Area, Inertia, and Young's Modulus values, and assign materials in bulk.

• 📊 Real-Time FEA Visualizations: Instantly view highly accurate, scaled Bending Moment, Shear, and Axial force diagrams. Visual force envelopes scale in perfect sync with your manual sliders to show worst-case demands.

• 🏗️ LRFD Load Combinations: Toggle Strength Design mode and apply custom, persistently saved load factors for Dead, Live, Wind, and Snow combinations.

• 📝 Fabrication Ready (BOM): Automatically calculate required beam lengths to generate an instant Bill of Materials/Cut List. Export directly to a formatted PDF or CSV for the workshop floor.

• ⚖️ Weight & Units: Calculate total structure weight instantly. Seamlessly toggle between Metric (m, mm, N, kg) and Imperial (ft, in, lbf, lbs) unit systems without losing precision.

🎯 TARGET AUDIENCE:

• 🚙 Overland DIY & Off-Road Fabricators: The perfect tool for builders creating custom roof racks, rock sliders, and canopy campers who need to ensure weldments handle dynamic trail loads.

• 🎓 Engineering Students: A portable, visual tool to check hand calculations for statics, mechanics of materials, and structural analysis.

• 🏭 Professional Fabricators & Welders: Verify beam sizing on the shop floor and instantly generate accurate PDF cut-lists for the team.

• 🏛️ Architects & Draftspersons: Perform preliminary span checks and sizing for lintels, joists, and rafters.

• 🔨 DIY Makers & Home Builders: Build heavy-duty workbenches, gantry cranes, or trusses with the peace of mind that your design is structurally sound.