The tailor-made software to design joints in steel structures to Eurocode 3

Simple, fast and safe to get verifiable design notes!

COP is an innovative and user-friendly software for the design of joints in steel structures. The calculation is made according to Eurocode 3 (EN 1993-1-8) and the so-called component method.

Your advantages at a glance

Time-saving design of joints

Don't waste time with long training sessions. Start designing your joints directly thanks to the simple and intuitive user interface of the software.

With COP, you will find the optimum configuration for your structural steel joints in no time at all. The detailed online checks of the entered data avoid input errors and calculation results are always displayed immediately.

Do you work in international projects? No problem. The language of the generated design notes can be selected independently of the user interface.

Verifiable design notes

For us as responsible engineers, it is essential to understand what we are doing with the use of a software. With COP you choose the right software. To calculate design resistances and stiffnesses of the joints, COP implements 1:1 and in a transparent way the principles and analytical rules of the Eurocodes taking into account the national annexes. No tricks. No black box.

Check it yourself. With COP you generate verifiable design notes that can be submitted directly to the proof engineer or controller. If desired, with all details and precise references to the rules of Eurocode 3.

Very easy to use & customer support

Even complex configurations e.g. with beam haunches or with end plates with 4 bolts in a row are no problem. Create user defined cross-sections or use beam notches or column stiffeners... Thanks to the integrated online checking of input data and fast 3D visualisation, you can use all available options very easily and precisely. Calculating of variants has never been so easy.

All our customers with a valid Update & Support contract also benefit from competent technical customer service, which is there to help you with all questions and problems relating to the software.

Request your free trial version now!

Just convince yourself and discover COP in the free trial version.

The trial version is a COP PRO edition with a single-user licence that is linked to the computer and in which all features are activated. The test version is valid for 14 days. The trial period only begins with the first start of the software.

Learn more


Get your results even faster with a new user interface

Completely new user interface
Calculation results are displayed immediately
User defined project templates

New version 3.1.3 available

What is COP?

COP is a user-friendly software for the design of joints in steel structures according to Eurocode 3.

For engineers and draughtsmen. Developed by the co-authors of Eurocode 3.

Simple. Intuitive. Innovative.

Available Editions

COP is available in 2 editions.


  • Simple joints

  • Joints of hollow sections in lattice girders


  • LITE edition

  • Moment resisting joints

  • User defined sections

  • Project templates

Licensing Policy

We offer various licence packages to create your own individual software package.

The purchase of a COP licence includes unlimited access to the software as well as an update and support period of at least one year.

About the developers

“They were involved in drafting Eurocode 3 and know how to implement it in COP for practical use.”

Design office Feldmann + Weynand GmbH

We are an internationally operating competence center for all questions of modern construction. As a reliable partner, we help our customers to realise projects efficiently and economically.

COP is developed by engineers for engineers. We have been directly involved in the development of the Eurocodes for many years. Our competent team therefore knows these standards and the scientific background first-hand experience. The German Steel Construction Association also relies on our expertise. For two decades, we have been drafting the design tables “Standardised joints in steel structures” - calculated with COP, of course.

Just convince yourself of COP

Request your personal trial version - free of charge and without any obligation.

The trial version is a COP PRO edition with a single-user licence that is linked to the computer and in which all features are activated. The trial version is valid for 14 days. The trial period does not begin with the installation but with the first start of the software.

If you should have any questions:

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