Active Façade

The perfect north-south orientation of the three ARQBÓREA blocks enables the use of different modalities and technologies on each façade to guarantee maximum levels of natural light, protection from direct sunlight and interior comfort, as well as offering the best exterior views.

The singularity of the project through its connection with the exterior is enhanced through the different “skins” of the building:

  • 4 of the 6 façades on the east and west integrate vegetation in the space between its double skin of interior and exterior glass, where arboreal species and creepers will grow.  The corbels and vegetation guarantee optimal protection from direct sun, while facilitating the connection of users of the building with nature. Moreover, these façades have manual interior blinds to guarantee maximum comfort.
  • On the other east and west façades, as well as those facing south, the latest sun and comfort protection technology has been applied: the “active” façade. A double façade with internal ventilation chamber that guarantees optimal comfort for occupants by avoiding the sensation of cold/hot “wall” in the area close to the façade. The chamber incorporates a motorised Venetian blind that adapts to the position of the sun throughout the day to guarantee the highest level of solar protection with maximum natural light automatically.
  • On the north façades, natural light is leveraged as no added elements are incorporated, except manual interior blinds.

The glass on all façades have high sunlight control features, with large-scale vision modules: 2.4 metres wide and high, as a minimum, from the floor to the ceiling on each floor. 


ARQBÓREA’s ideal orientation on the plot, its freestanding configuration, its ultra clear curtain wall, the height between floors and open-plan space ensure excellent leverage of natural light. Added to the high-performance control glass on all the façades, there are a range of solutions for solar control and to enhance comfort and lighting on all the façades and orientations.

All the lighting in interiors uses high energy-efficient luminaires with LED technology and low glare.

The DALI (Digital Addressable Lighting Interface) control system monitors the lighting according to natural light resources and creates “mood lighting scenes”.

Dynamic lighting system adapted to occupants’ circadian rhythms

ARQBÓREA incorporates a dynamic lighting system adapted to our circadian rhythms. This system changes the light temperature (the colour of the light) throughout the day to regulate the circadian rhythms of the people working at the building.

Our circadian rhythms or “biological clock” synchronise with daylight, which changes colour depending on the time of day.  People are “activated” at the beginning of the day and “de-activated” at the end of the day to get ready to sleep. Circadian rhythms and the impacts thereof have been and continue to be researched in depth and, in 2017, the Nobel Prize in Physiology or Medicine was awarded to 3 scientists (Jeffrey C. Hall, Michael Rosbash and Michael W. Young) for their discovery of the molecular mechanisms that control circadian clocks.

The lighting installed at ARQBÓREA is programmed to start the day with warm light, then turn colder over the course of the day and return to warm light at the end of the day. This process is carried out automatically and users barely notice the changes in the office lighting, but their metabolism will adjust accordingly. The benefits of dynamic lighting include:

  • Adjusting light in the work spaces to daylight, which is more natural light.
  • Improving the well-being of people, by synchronising their circadian clock with daylight.
  • By stabilising their biological clocks people sleep better.
  • Reducing eye strain.
  • Improving cognitive ability.
  • Strengthening the body’s defences against illness.
  • Reducing level of absenteeism.
  • Reducing depression.

En definitiva, el centro de la iluminación son las personas y la mejora de su bienestar de forma activa. A este concepto se le llama Human Centric Lighting.


The ARQBÓREA design incorporates a fan-coil HVAC system with four pipes, EC motors and primary units with variable flow, regulated via air quality sensors. The main advantages of this system are as follows:



Efficiency, with low levels of electricity use, noise and adapted to user needs.



Maximum flexibility in the fit-out design for future tenants thanks to the fan-coil distribution: one every 14 m² of flooring and every 2.4 linear metres on the façade.



Full temperature control for each fan-coil unit via independent thermostats for every two fan-coils and option of users managing these fan-coils (temperature, ventilation speed, timetable, etc.) from a smart device (smartphone, tablet, etc).

Electricity Installation

The electricity supply on the office floors will be managed through four electricity control panels located on both sides of the main entrances.  These floors will also have raised ceilings and floors, 95 and 15 cm respectively, to house installations.


Vertical transportation and communication will be carried out via six large capacity elevators, equipped with destination control selection and two service elevators. There will be two same-sized communication cores in the building. Each core will comprise:

  • Three elevators, two of which will operate from the car park floors to the office floors while the third will operate from the ground floor up to the rooftop.

  • A service elevator, with direct access to office floors from the car park.

ARQBÓREA will also be equipped with an elevator in the common area connected to the car park levels.

Car Park

The two underground floors at ARQBÓREA will accommodate a car park with 450 parking spaces that include 14 spaces for electric and fuel-efficient vehicles. There will be two lanes to enter and exit the car park thereby ensuring efficient traffic flows.

The way in which the building adapts to the lie of the land on the plot means level -1 of the car park has a façade that lets in natural light and ventilation, as well as providing street-level access and direct access to the lobby.

Close to the building entrance there will be 45 bicycle parking spaces.


Holistic fire protection

ARQBÓREA’s fire detection systems comprise smoke detectors for the protected atmosphere and raised ceiling, together with centralised alarm control.

The offices, common areas, mechanical room and car park are equipped with detection systems.

All lobby areas on office floors and the office spaces will have an automatic fire extinguishing sprinkler system.

All floors will also have a network of fire hoses and portable fire extinguishers.

Interior Security

  • An access control system for persons in the main lobby.
  • An anti-intrusion system using magnetic sensors.
  • CCTV surveillance for entrances to the building and the car park.
  • Barrier access control for vehicles in the underground car park.


Vertical distribution of telecommunications will be via a shaft expressly for this purpose, with horizontal distribution via the corresponding channels. All the common installations in the building will be centralised through a management system permitting optimal control of operations. In addition, ARQBÓREA will be equipped with the following services:

  • Option of high-speed connectivity (ADSL, ISDN, Wi-Fi, etc…).
  • Multi-operator mobile coverage network.
  • Option of fibre optics.
  • Raised floor for cabling distribution to workstations.


ARQBÓREA is strongly committed to integrating nature into its architectural proposition and the common areas around the building will have over 2,500 m² of vegetation with a big number of large-sized trees, which will provide shaded areas in sunny months and create a varied landscape, together with bushes and ground level plants that will demarcate paths and entrances.

The presence of fountains and benches will complete the spaces designed for users of the building to enjoy.

The walkways will be tiled with natural stone.

Quality in every detail

Specifications for construction


  • Office floor plan: structure of columns, slabs and post-tensioned slabs with lights between columns 15.35 m in one direction and 7.2 m in the other. Rectangular columns on the façade and no intermediate columns thanks to the technical features of the post-tensioned slabs.

  • Below ground: Waffle slabs on lower floors and slab on floor -1.


Walkable roof with perimeter plants and synthetic decking with SRI >70% finish. Installations area demarcated from walkable areas with acoustic screen.


  • High energy efficient luminaires with LED technology and low glare.
  • Digital Addressable Lighting Interface (DALI) system for lighting control.
  • Dynamic lighting system adapted to circadian rhythms of occupants.


  • Common areas:In lobby, large granite tile flooring, natural stone and solid aluminium wall panels and wood ceilings. In elevator hallway, granite tile flooring, natural stone walls and wood ceilings, with EI glass doors at entrance to office modules.
  • Offices:: Raised ceiling with perforated steel tiles for high sound absorption, with extra sheet for sound insulation. Encapsulated raised floor panels.
  • Car Park:: Flooring with coloured Epoxy resin finish, number plate and parking spaces identification.


  • 4 elevators equipped with destination control selection that operate from the car park floors to the office floors. Nominal load of 21 persons. Nominal speed, 1.6 m/s.
  • 2 elevators equipped with destination control pre-selection that operate from the ground floor up to the roof. Nominal load of 21 persons. Nominal speed 1.6 m/s.
  • 2 service elevators providing direct access from the car park levels to the office floors. Nominal load 26 persons or 2,000 kg. Nominal speed 1 m/s.
  • 1 two-sided lift in development that connects car park floors with the two levels of the common areas. Nominal load for 9 persons. Nominal speed 1 m/s.

HVAC Systems

Fan-coil HVAC system with four pipes, EC motors and fan-coil distribution: one every 33 m² for floor interiors and every 2.4 metres on the façade.  Primary units with variable flow.

Power Supply

  • 4 electrical switchboards located on both sides of main entrances on each floor.
  • Electrical room with 1 transformer 800 kVa.
  • Emergency generator on roof to supply electricity to common installations in the event of a power outage.

Fire Protection

  • Smoke detectors for protected atmosphere and raised ceiling, the latter only in offices.
  • Centralised alarm control. Detection systems in offices, common areas, mechanical room and car park.
  • Fire hoses and portable fire extinguishers on all floors.
  • Automatic fire extinguishing sprinklers in offices and entrance lobbies to offices.


  • Access control system for persons in the main lobby.
  • An anti-intrusion system using magnetic sensors.
  • CCTV surveillance for the car park and all entrances to the building.
  • Barrier access control for vehicles in the underground car park.


  • Floor to ceiling height of 2.75 m on offices floors and 4.0 m on ground floor.
  • Raised ceiling of 90 in waffle slab area and 50 cm respectively in post-tensioned slabs area to house installations. Raised floor 20cm high.


The evacuation routes are designed to enable an evacuation ratio of 1/7,4 m².


  • Ratio men/women: 50/50.
  • Women: 8 toilets and 6 wash basins per floor.
  • Men: 6 toilets, 6 wash basins and 4 urinals per floor.
  • 2 toilets for persons with reduced mobility on all floors.