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terms of use

Please read the below terms of use carefully before using the services provided by By accessing the services of this site and content of its database, you agree to become bound by these terms and conditions. If in any case you do not agree to the terms and conditions, then you may not access the content and services offered by this site.

The purpose of the site, owned and operated by Free-D Geometries bv in Amsterdam, is to develop an online database for non-orthogonal buildings, and to create a platform for students, academics, industry professionals as well as general public interested in architecture and building science. The Site is accessed by you (“User” or “you”) under the following terms and conditions: 



The website is based on the CAD-tool morphological scheme developed by Dr. Karel Vollers and is an intellectual property of Free-D Geometries bv. The developed HTML code, its interactive media viewer, is a property of Free-D Geometries bv. The shaping scheme, its icons and definitions are available under the Creative Commons Attribution-Non Commercial-Share Alike 3.0. 



The free-D website aims to enhance user access to information relevant for Architects, Engineers, Institutions of Higher Education and students. It provides specific services and information to registered members. of Free-D Geometries bv has compiled the content of this website to the best of its knowledge. The website aims to keep this information update and accurate. If errors are brought to its attention, it will do its best to correct them. However, Free-D Geometries bv takes no responsibility for the precision, reliability, integrity contained in the content (including, but not limited to text, user comments, messages, information, data, graphics, news articles, photographs, images, illustrations, software, audio clips and video clips) of the doesn’t guarantee the absence of viruses. Free-D Geometries bv reserves the right to modify, suspend, or discontinue on a temporary or permanent basis any section or page of this website, in whole or in part, at any time and for any reason without prior notice to the users, and shall not be liable to users or to any third party for any such modification, suspension, or discontinuance. Users of this page declare that they agree to the terms and conditions under their own responsibility.



Visitors to the Free-D website may register and create a personal or a company account profile on the website to become a user and gain access to further information and services through the free-D forum. You shall provide with accurate, complete, and updated registration information. Failure to do so shall constitute a non-agreement of the Terms of Use, which may result in immediate termination of your account. The registering person will be informed by e-mail of the validation of their details after which the new member account will be activated. reserves the right to refuse registration of, or cancel, your User ID in its discretion.

All registered users (Individual or Company) are responsible for maintaining the confidentiality of their passwords and are fully responsible for all activities that occur through their account. The website does not retain liability or responsibility for such usage. The website Services are available only to individuals who are at least 18 years old, whether acting on their own behalf or as an authorized employee or representative of a corporation or other business entity. If you do not so qualify, do not attempt to register for or use the Services.



On the website, you are encouraged to register your personal or company profile, upload project information, participate in discussions, give comment on featured projects. In consideration of your use of the Service, you represent yourself.

You agree to: As a user of the Service, you understand that all information, data, text, photographs, comments, tags, or any other material ("Content"), whether publicly posted or privately transmitted, is the sole responsibility of the user from who this Content has originated. This means that you as a user are solely responsible for any Content you upload.

As a user of the Service, you agree not to use it to: upload, post or in any way make available Content which is unlawful, harmful, threatening, abusive, harassing, tortuous, defamatory, vulgar, obscene, libelous, invasive of another's privacy, hateful, or racially, ethnically or otherwise objectionable; impersonate any person or entity, or falsely state or otherwise misrepresent your affiliation with any person or entity; forge identifiers that disguise the origin of any Content transmitted through the Service;

upload, post or in any way make available Content which you do not have a right to make available under any law or under contractual or fiduciary relationships (such as inside information or proprietary and confidential information); for any illegal or unauthorized purpose.

If you are an international user, you agree to comply with all local laws regarding online conduct and acceptable content;

a) upload, post, or in any way make available Content that infringes any patent, trademark, trade secret, copyright or other proprietary rights of any party;

b) upload, post or in any way make available unsolicited advertising, promotional materials, junk mail, spam, chain letters or pyramid schemes;

c) upload, post or in any way make available computer code containing software viruses or any code designed to disrupt the functionality of computer software, hardware or telecommunications equipment

d) to abuse, harass, threaten, impersonate or intimidate other users;

collect or store personal data about other users in connection with the prohibited conduct and activities as described in the above paragraphs.

e) at all terms reserves the right to remove or alter your Content.

f) You agree not to reproduce, duplicate, copy, sell trade, resell or exploit for any commercial purposes, any portion of the Service, use of the Service, or access to the Service.

g) You acknowledge that can terminate your account without prior notice at any given time.



All users contributing to the database are required to grant broad permissions to the general public to re-distribute and re-use their contributions freely, as long as the use is non-commercial, attributed and the same freedom to re-use and re-distribute applies to any derivative works. Therefore, for any text or media you hold the copyright to, by submitting it, you agree to license it under the Creative Commons Attribution-Non Commercial-Share Alike 3.0.

As an author, you agree to be attributed in any of the following fashions: 

a) through a hyperlink (where possible) or URL to the article or articles you contributed to, 

b) through a hyperlink (where possible) or URL to an alternative, stable online copy which is freely accessible, which conforms with the license, and which provides credit to the authors in a manner equivalent to the credit given on this website, or 

c) through a list of all authors. (Any list of authors may be filtered to exclude very small or irrelevant contributions.)

If you want to import text that you have found elsewhere or that you have co-authored with others, you can only do so if it is available under terms that are compatible with the Creative Commons Attribution-Non Commercial-Share Alike 3.0 license. If you import text under a compatible license which requires attribution, you must, in a reasonable fashion, credit the author(s).



The content on is available under terms that are compatible with the Creative Commons Attribution-Non Commercial-Share Alike 3.0 license. With the exception of content specifically noted with separate copyright requirements and content that is used under "fair use" exemptions, or similar exemptions of copyright law. 

Guidelines for Re-use of text and media:


To re-distribute a text page in any form, provide credit to the authors either by including 

a) a hyperlink (where possible) or URL to the page or pages you are re-using, 

b) a hyperlink (where possible) or URL to an alternative, stable online copy which is freely accessible, which conforms with the license, and which provides credit to the authors in a manner equivalent to the credit given on this website, or 

c) a list of all authors. (Any list of authors may be filtered to exclude very small or irrelevant contributions.) 

This applies to text developed by the community.

Copyleft/Share Alike: 

If you make modifications or additions to the page you re-use, you must license them under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 or later.


You may not use this content for commercial purposes.

Indicate changes: 

If you make modifications or additions, you must indicate in a reasonable fashion that the original work has been modified.

Licensing notice: 

Each copy or modified version that you distribute must include a licensing notice stating that the work is released under CC-BY-NC-SA and either 

a) a hyperlink or URL to the text of the license or 

b) a copy of the license. 

For this purpose, a suitable URL is:

For further information, please refer to the legal code of Creative Commons Attribution-Non Commercial-ShareAlike 3.0


7. COPYRIGHT COMPLAINTS respects the intellectual property of others. It is’s policy to respond promptly to claims of copyright and other intellectual property infringement. will promptly process and investigate notices of alleged infringement and will take appropriate actions under the Copyright Directive (Directive 2001/29/EC) and other applicable intellectual property laws. Upon receipt of notices complying or substantially complying with Directive2001/29/EC, may act expeditiously to remove or disable access to any material claimed to be infringing or claimed to be the subject of infringing activity and may act promptly to remove or disable access to any reference or link to material or activity that is claimed to be infringing. will terminate access for subscribers and account holders who are repeat infringers.

Notifying of Copyright Infringement: To provide notice of an infringement, you must provide a written communication to the attention of

Please note that you may be liable for damages (including costs and attorneys' fees) if you materially misrepresent that an activity is infringing your copyright.

about the online documentation platform on non-orthogonal buildings. The motivation and relevance of the free-D project is based on the increasing degree of geometrical variation and complexity in non-orthogonal buildings worldwide.
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