Awesome UI

Robust, intiutive, and smooth UI. Welcome to the best of user experience. An engineering app with the aesthetics not left behind.

Perfect Code

Perfect Code

Works like magic. It speeds up your way to the intended result.

Perfect Code

Simple Design

Simple and clean design makes the app understandable right from the start. The output options are all in very well known and popular formats.


The Perfect Structure App

Perfect Structure brings a fresh approach to the design and optimization of reinforced concrete members. With a variety of section types and design options you will love it right from the start. Use the Perfect Structure to unleash your engineering prowess! Some of the common features in our apps include:

   Top-notch UX

   Universal Software

   Minimal Learning Curve

   Sensible Price

   Calculation report.

   Results in PDF, CSV and DXF formats


Since its inception BlackSea Labs has been involved in the development of intuitive and powerful applications and tools for the benefit of engineers. We are dedicated to providing superb software to our valued users dispersed across the globe.

Perfect Structure is our latest app for the design of reinforced concrete columns and beams according to various design norms and with multi-language support. We hope you will enjoy using it and highly appreciate your valuable feedback.

Perfect Structure is the ultimate tool for engineers to design and check the load bearing capacity of reinforced concrete members.
8 languages. English, German, French, Italian, Spanish, Portuguese, Russian and Turkish.
Included design codes are ACI 318 (U.S.), EC 2 (European), BS 8110 (British), SP 52-101-2003 (Russian) and TS 500 (Turkish).
You can get the results in .pdf, .csv and .dxf formats.
All popular grades are included but you can enter your own specification using the overwrite function.
You can enter data using both SI (metric) and Imperial (US) units system.
No, using the “calculate rebar amount” option, you can get the application optimize and calculate the necessary rebar amount itself.
BlackSea Labs programs are subjected to continuous quality control. All program parts have to undergo comprehensive automated and manual testing before the program is released. The software is tested for its usability and practical application on the basis of reference examples. In this process, all bugs are documented in writing, evaluated, and corrected, if relevant. New versions are released by the authorized people (quality controllers in the first instance and then management) after the completion of all relevant tests and the positive assessment of the test results.

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Why this app?

 Optimal design of RC members. Done!   RC buildings and designing  a “Lean” Structure The concrete and rebar steel which are the main…   RC…