We develop software for structural engineers and detailers. Our development team researches, tests, and applies new methods of analyzing the behaviour of structures and their members. Based on this, we created IDEA StatiCa – software that enables engineers to work faster, evaluate requirements of the national code thoroughly, and use the optimal amount of material. For us, creating software is a way to contribute to making every new construction around the world safer and cheaper.

December 2025

11 Dec

Preloaded Bolts: Why Stiffness Stays the Same

by theodore

in Technical articles

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Many engineers expect preloaded bolts to increase connection stiffness, so it’s surprising when the results remain unchanged. This isn’t a bug but a direct consequence of how Eurocode defines joint stiffness. In this post, we explain why pretension doesn’t affect...