Privacy policy

Who we are
The main website address is:
What data we collect and why we collect it
When visitors leave comments on the site, we collect the data shown in the comments form and also the visitor's IP address and browser user agent string to help detect spam.
If you upload images to the site, avoid uploading images with embedded location data (GPS EXIF) included. Site visitors can download and extract any location data from images on the site.
Contact Forms
If you leave a comment on our site, you may choose to save your name, email address and website in cookies. These are for your convenience, so you don't have to fill in your details again when leaving another comment. These cookies will last a year.
If you have an account and log in to this site, we will set a temporary cookie to determine if your browser accepts cookies. This cookie contains no personal data and is discarded when you close your browser.
When you sign in, we will also set various cookies to save your login information and your on-screen display options. Login cookies last two days and screen options cookies last one year. If you select “Remember Me,” your login will persist for two weeks. If you sign out of your account, login cookies will be removed.
If you edit or publish an article, an additional cookie will be saved in your browser. This cookie does not include personal data and simply indicates the post ID you just edited. Expires after 1 day.
Content from other websites
Articles on this site may include embedded content (e.g., videos, images, articles, etc.). Embedded content from other sites behaves the same as if the visitor had visited the other site.
These sites may collect data about you, use cookies, incorporate additional third-party tracking, and monitor your interaction with embedded content, including tracking your interaction with embedded content, if you have an account and are connected to the site.
How long we keep your data
If you leave a comment, the comment and its metadata will be retained indefinitely. This is so that we can automatically recognize and approve any follow-up comments, rather than keeping them in a moderation queue.
For users who register on our site, we also store the personal information they provide in their user profile. All users can view, edit or delete their personal information at any time (except they cannot change their username). Site administrators can also view and edit this information.
What rights do we have over your data
If you have an account on this site or have left comments, you may request to receive an exported file of the personal data we hold about you, including any data you have provided to us. You may also request that you delete any personal data we have about you. This does not include any data that we are required to keep for administrative, legal or security purposes.


Delievering on time and dropping construction costs? Stop looking, that's Slefty's business.

We have what you need
  • Structural Design

    The best commitment between functionality and savings is our guarantee for all our structural analysis services, from skyscrapers to the most complex shapes. We can help you designing the solutions with the best compromise between costs and usability. Our expertise can cover


    • Design of steel structures
    • Design of concrete structures
    • Design of wooden structures
    • Simulation of parts and materials
    • Cost analysis
  • Geotechnical Design

    To build underground has to be as easy and simple as above ground level. That's why the geotechnical department never lets us forget soil, buried structures and their interactions, in the root of any construction work. (Pun inteded).

  • Building Information Modeling

    Wouldn't it be so much better to have a real time 3D containing all interventions of all specialists? Less conflicts, shorter lead times. It would be. It is. Let us build one model with all this information. See your building's future before you even "set the first stone".

  • Seismic Analysis

    You don't want to have seism sensitive structures, being on a high risk territory, without a detailed Seismic Analysis. Make sure you're prevented from catastrophe, stay safe. Why take the chance? Consult us.

  • Civil works

    We also integrate and manage other civil works specialties.