# Structural Engineering Calcs — Structural Integrity Evaluator > Structural Integrity Evaluator (iPhone/iPad app by Yuhsiu Lai.) - Source: https://appshunter.io/ios/app/structural-engineering-calcs/id6761749407 (this page in markdown: same URL + `.md`) - Developer: [Yuhsiu Lai](https://appshunter.io/developer/433114647) - Category: Productivity, Utilities - Price: $4.99 - Age rating: 4+ - Requires: iOS 17.0 · 5 MB - Languages: American English - Released: 2026-04-08 - Data updated: 2026-08-01 - User reviews in markdown: https://appshunter.io/ios/app/structural-engineering-calcs/id6761749407/reviews.md ## What is Structural Engineering Calcs? This app is a comprehensive structural engineering toolkit designed for field screening, learning, and quick calculations. It combines classical structural analysis with practical field tools in a single, cohesive application. Beam & Column Calculators This app analyzes simply-supported beams under uniformly distributed loads, midspan point loads, or a point load placed at any custom position along the span — an off-center case that other tools often omit. Results include maximum moment, shear, deflection, bending stress, and a demand/capacity ratio with a clear PASS/FAIL verdict. Column analysis covers Euler buckling and yield capacity for rectangular, circular, and I-beam sections across four end-condition cases. ASCE 7-22 Load Combinations (new) Enter service loads — dead, live, roof live, snow, wind, and seismic — and this app instantly generates all seven LRFD combinations (§2.3.1) and nine ASD combinations (§2.4.1) side by side, with the governing case clearly flagged. Structural Unit Converter (new) Convert between metric and imperial units across four categories engineers use every day: Force (N, kN, lbf, kips, kgf), Stress and Pressure (Pa, kPa, MPa, GPa, psi, ksi, ksf), Moment (N·m, kN·m, kip·ft, kip·in, lbf·ft), and Length (m, cm, mm, ft, in). A full multi-unit reference table updates instantly with every entry. Inspection Checklist (new) A digital field inspection checklist tailored to four structure types — house, bridge, building, and retaining wall. Rate each item on a 1–5 condition scale (Good / Fair / Marginal / Poor / Critical) or mark it N/A. Add notes per item. Track an overall condition score derived from rated items only, with color-coded feedback. Structure Assessment Screen houses, bridges, multi-story buildings, and retaining walls by entering geometry, materials, and loading. This app computes key quantities — estimated gravity loads, Rankine earth pressures, bridge midspan moments under AASHTO HL-93 — and flags age- and zone-based warnings automatically. Example Problems Twelve worked structural engineering problems cover beams, columns, and structure assessments at beginner, intermediate, and advanced levels. Each problem shows the full step-by-step solution with formula, substitution, and numeric result — then runs the live engine and displays the computed answer for verification. Materials Reference Quick-reference properties for steel (A36, A992), concrete (21 MPa / 28 MPa), timber (Douglas Fir, Southern Pine), and aluminum (6061-T6), covering Young's modulus, yield strength, and density. Disclaimer: All results are preliminary estimates for educational and screening purposes only. They are not a substitute for analysis, design, or review by a licensed Professional Engineer. ## Version history (last 3 releases) ### 3.0 — 2026-06-12 Version 3.0 introduces three substantial new tools: Load Combination Calculator — Enter dead, live, snow, wind, and seismic loads and generate all ASCE 7-22 LRFD and ASD combinations instantly, with the governing case highlighted. Structural Unit Converter — Convert force, stress/pressure, moment, and length between metric and imperial units. A live reference table shows all conversions at once. Inspection Checklist — A digital field checklist for houses, bridges, buildings, and retaining walls. Rate each item on a 1–5 condition scale, add notes, and view an overall health score. Off-Center Point Load — The beam calculator now supports a point load placed at any position along the span, with exact Roark-formula deflection and moment calculations. ### 2.0 — 2026-04-12 Version 0.2 — Sample Calculations Library New in this release: browse 12 pre-built structural engineering problems with full step-by-step solutions. Examples tab — Beam, column, and structure problems ready to explore, from steel floor beams to retaining walls Step-by-step breakdowns — See every formula, substitution, and intermediate result like a textbook worked example Live engine verification — Each example runs through the same calculation engine you use, so you can confirm the math Search & filter — Find examples by category (beams, columns, structures) or difficulty level (beginner, intermediate, advanced) Problems include: steel and timber beams, crane runway beams, concrete lintels, steel and aluminum columns, timber deck posts, residential homes, highway bridges, office buildings, and cantilever retaining walls. ### 1.0 — 2026-04-08 No release notes. ## More apps by Yuhsiu Lai - [Availability and Reliability](https://appshunter.io/ios/app/availability-and-reliability/id435033141) - [Battery Capacity Calculator](https://appshunter.io/ios/app/battery-capacity-calculator/id445176473) - [48VDC Power System](https://appshunter.io/ios/app/48vdc-power-system/id449477913) - [NEC Electrical Code Tools](https://appshunter.io/ios/app/nec-electrical-code-tools/id469334093) - [Engineer's Toolset](https://appshunter.io/ios/app/engineers-toolset/id478486737) - [Battery Current Simulator](https://appshunter.io/ios/app/battery-current-simulator/id488430945) All apps by Yuhsiu Lai: https://appshunter.io/developer/433114647 ## Related topics [structural engineering calcs](https://appshunter.io/ios/topics/structural-engineering-calcs) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-01.*