Your browser is very old and it is not supported.
This website uses modern web design practices to deliver the best possible user experience.
While some basic functionality is still available for your browser, please consider installing a modern browser such as Chrome or Firefox to properly view this website.
Important notification about cookies - Please select
Click "Accept" if you agree or click "Manage" to learn more and customize cookies. You can modify your selection later.
Please select a previously saved calculation file.
Make sure that the selected file is appropriate for this calculation.
Free online calculation tools for structural design according to Eurocodes
You can provide the following project data as page header.
Eurocode 8 Elastic acceleration and displacement response spectra (for design of structures in the elastic range and calculation of displacements)
Calculation of the elastic response spectrum in terms of spectral acceleration and spectral displacement representing the seismic action in the horizontal or vertical direction. Applicable for the design of structures that remain in the elastic range, seismic isolation systems, and calculation of seismic displacements.
EN 1998-1:2004 Sections 126.96.36.199, 188.8.131.52
Supported National Annexes:
In addition to countries that adopt the CEN recommended values for NDPs, the following National Annexes are also supported automatically: Belgium, Czech Republic, Greece, Norway, Portugal, Slovenia