Environmental features

• Existing structure and facade conservation
• Thermographic survey to prevent air leakage paths through the existing fabric
• Control and review of all roof terrace insulation and waterproofing
• Thermal evaluation and optimisation of the existing building under the national building regulation
• Replacement of the historical traditional cooling production by a geothermal system
• Replacement of all luminaries to reduce power installation
• Implementation of photovoltaic panels, solar thermal panels for hot water production, 2 wind turbines and urban solar lightings.
• Life cycle cost analysis for design decisions
• Adaptation of the lighting zones and thermal zoning of the tenant organisation
• Adaptation of the ventilation rates and the HVAC systems to ensure maximum indoor air quality
• Choice of low VOC emission finishing and VOC measurements campaign in progress
• Acoustic survey of the building and review of all acoustic bridges to ensure maximum user comfort
• Preservation of the gardens during refurbishment works
• Enhancement of the landscape with an ecologist survey (planting terrace, flower meadows)
• Implementation of a landscape management plan
• Implementation of cycle racks and amenities for building users
• Close commissioning management throughout the three construction works periods
• Work on the building user guide with the tenant and publication through the building website
• Implementation of an on-site sustainable water treatment and reuse of the treated water within the toilets
• Leak detection system and sanitary supply shut off valves implemented on all toilet blocks
• Replacement of the BMS to a more developed and adapted one for the building
• Review of the waste storage locations and implementation of a composting device

Michel Janet, Managing Director NV France says: 

“BREEAM certification is a requisite to keep our properties competitive and sustainable whilst ensuring the durability of the tenant in the premises.”

Building services

• Cooling production is provided through two geothermal heat pumps which dispatch into the building through a cooled water loop.
• The heating system relies on convector supplied with grid electricity controlled through the BMS.
• Fresh air rate of over 36m³/h/occ is provided through air conditioning centrals (CTA) into the offices, connected with CO₂ detectors.
• Electricity generated with 400 m² solar panels and 2 urban wind turbines.
• Solar thermal panels save energy for the hot water system connected to restaurants.

Green strategy

• Replacement of the two air to air heat installed on terrace by two geothermal heat pumps.
• Refrigerant detection system on the geothermal heat pumps technical local.
• Additional thermal isolation on the roof.
• 400 m² photovoltaic panels.
• 60 m² solar thermal panels for hot water production.
• 2 urban wind turbines.
• Green roofing with sebum helping rainwater run-off and thermal isolation
• Rainwater recycling system for irrigation and toilets
• Sink water treatment recycling for toilets

Damien Liot, Techincal Director, Wereldhave NV France says:

“Wereldhave chose BREEAM because of its international exposure and to evaluate our worldwide portfolio on the same basis.”