P-Delta Geometric Stiffness Calculator

Quantify the geometric stiffness reduction due to P-delta effects. Calculate stability coefficient theta and determine if second-order analysis is required per ASCE 7.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)
σy — Normal Stress Y (MPa)
τxy — Shear Stress (MPa)
⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.
Advertisement

How to Use

Enter the values for the scenario you are assessing. Quantify the geometric stiffness reduction due to P-delta effects. Calculate stability coefficient theta and determine if second-order analysis is required per ASCE 7. Use the p-delta stiffness result to inform your calculation.

Frequently Asked Questions