Structural Engineering Basics

Foundational geometry and mechanics resources for preliminary structural-engineering calculations.

• Moment of Inertia Calculator
• Moment of Inertia Calculation Guide
• Beam Bending Stress Calculator
• Section Modulus Calculator — Sx/Sy about centroidal axes.
• Section Modulus Calculation Guide
• User-Defined Utilization Calculator — user-entered Demand / Allowable ratio with neutral threshold context.
• Utilization Ratio Guide