The installation of the spectacular structural panels of the new Polaris North Madrid office building is completed


Designed by the b720 team and built by SACYR, the project consists of the complete remodelling of the Manoteras 12 building (former Yellow Pages offices) in Madrid for Onix Capital Partners. Sacyr will carry out the complete rehabilitation and enlargement to 7 heights of the building located at Manoteras Avenue 12, to turn it into a sustainable and efficient office property that aspires to the maximum certifications as Leed and Well Gold. To this end, the remodelling will be undertaken on the existing 5,310 m2 and the area will be expanded to reach 21,200 m2 built with the most avant-garde construction techniques.


The team of the Fermín Vázquez b720 studio accomplished the project for this complex and ambitious intervention in which HOMU Project, DINMAS and Valladares engineering also participated.


Polaris North Madrid is one of the first buildings in Spain to opt for the LEED® Core & Shell v4 and the WELL® v1 Gold level certifications. These certifications guarantee its energy saving, respect for the environment, excellency of materials, and luminosity; values that bring great benefits to their users.


With a 70-meter large facade over Manoteras Avenue, the building finds support on a "table" of perimeter concrete. Its pillar-free diaphanous floors provide the maximum use of areas, allowing freedom of design for collaboration and interaction spaces.


Large horizontal floors will make the most of natural light. Its pillar-free configuration generates wide, open, and inspiring spaces. A perfect balance between operational efficiency and well-being.



The design included the concept of industrialization, taking full advantage of concrete. The panels play a double function of enclosure and structural element. Its post-tensioned slabs of up to 17 meters of light are anchored and supported on the panels transmitting the load to the large starting beam.



Given the uniqueness of the project, the construction process has been specifically designed in detail. The lower panels must be placed before executing each slab but must also leave a free space in the floor front to allow the post-tensioning tasks. Therefore, the collaboration between Prehorquisa´s technical office, SACYR and the Technical Project Management has been constant and primordial. And among the many advantages of this system we highlight the reduction of the work planning, greater quality control and the reduction of waste on site.


We generally find two types of panel design. The first one, for the north and south elevations, has 650-mm orthogonal nerves to the façade, and the second one, for the east and west sun, has vertical nerves with 37-degree inclination to opposite sides.




PREHORQUISA_precast your designs since 1988

More information:

Check out the online HTML CheatSheet here and save the link because you might need it while composing content for a web page.

NOTE! This site uses cookies and similar technologies.

If you not change browser settings, you agree to it. Learn more

I understand

1. Use of cookies

The website owned by Prehorqui S.A. uses cookies

Cookies are files that are downloaded to your computer when you access web pages. Cookies allow a web page, among other things, to store and retrieve information about the browsing habits of a user or their team and, depending on the information they contain and the way they use their equipment.

In addition, improve your browsing process, which allows the website to offer the user information that may be of interest in the function of the use made, the content of it.

In case you do not want to receive cookies, please configure your Internet browser, so that you erase them from your computer's hard drive, block them or notify you in the case of the installation of them. To continue without changes in the website of cookies, simply continue on the website.

2. Consent

The cookies they use do not store any personal data, nor any type of information that can be identified, which allow you to register, voluntarily with the purpose of using the services that we make available to you or receiving information about promotions and contents of your interest.

When browsing for the first time through our website, a banner explaining the use of cookies appears. By continuing on our website you indicate that you are consenting to the use of the aforementioned cookies, and in the conditions contained in this cookie policy. This consent is valid for a period of 13 months. If you do not agree, send an email to

3. Types and purpose of cookies

Cookies, depending on their permanence, can be found in:

Cookies depending on their purpose can be approached in the following way:

Performance cookies (techniques and customization): This type of cookie reminds you of the tools found in the services, so you do not have to reconfigure the service each time you visit. As an example, this typology includes: volume adjustments of video and sound players and the video transmission speeds that are compatible with your browser.
Analytics cookies: each time a user visits a service or information on the website or a tool from an external provider (Google Analytics, Comscore and others that can be added to this list if they vary in relation to the current ones) an analytical cookie on the user's computer. This cookie is only generated in the visit, it is served in future visits to the services of the web page to identify itself anonymously to the visitor. The main objectives that are pursued are:
Allow the anonymous identification of the navigating users through the cookie (identify browsers and devices, not people) and therefore the approximate count of the number of visitors and their tendency in time.
Identify anonymously the most visited content and therefore more attractive to users.
Know if the user is accessing new or repeat visit. Important: the cookie is never associated with any character of a personal nature that can identify you. These cookies can only be used for statistical purposes that help optimize the user experience on the website.
Own advertising cookies: serve to manage the owner of the website if a user has visited or not the advertising that is included. It also allows the management of advertising spaces on the data storage page of user behavior in browsing to be able to offer advertisements.
4. How to block or delete installed cookies

You can allow, block or delete the cookies installed on your computer by selecting the options of your browser. You can find information on how to do it, in relation to the most common browsers, in the links that are included below:





We inform you, however, of the possibility that the deactivation of cookies prevents or hinders navigation or the provision of services offered on the website.

5. Modifications

The website owned by Prehorqui S.A. You can modify this cookie policy in accordance with legal requirements, or in order to adapt this policy to the instructions issued by the Spanish Agency for Data Protection.

For this reason, we advise users to visit the newspaper