Beirut, Lebanon
M1
M1 is an 11-story commercial complex and the first and only LEED Platinum certified project in Lebanon. The building is able to reduce consumption by 31% compared to a baseline building (based on ASHRAE 90.1-2007) via climate-friendly technologies such as VRV air conditioning systems, high-performance glazing, efficient lighting with controls and dimming, and a PV system, to name a few.
Project info
- Construction phase
- New construction
- Building type
- Non-residential building
- Detailed building type
- Office
- Net floor area
- 19200 m2
- Land plot size
- 2738 m2
- Stories
- 11 stories
- Construction type
- Concrete
- Original construction year of the building
- 2016
- Project contact
- Abdulrahman El Hajj
- Contact email address
- ahajj@m1group.com
Project team
- Developer(s)/owner(s)
- M1 Real Estate
- Architect(s)
- Jo Geitani Architects
- Construction contractor(s)
- ACC
- Energy efficiency consultant(s)
- EcoConsulting
- HVAC consultant(s)
- SERT
- Building services
- SERT
- Other project team partners
- EEG, Apave
Building Rating and Certifications systems
- Rating and certifications systems
- LEED
Building Envelope
External walls
- Description of construction
- Mineral wool insulation
- U-Value
- 0.67 W/(m²*K)
Roof
- Roof type
- Flat roof
- Description of construction
- XPS insulation
- U-Value
- 0.26 W/(m²*K)
Openings and windows
- Glazing type
- Double glazed
- U-Value glass
- 2.5 W/(m²*K)
- G-Value glass
- 0.74
- Frame material / description
- Aluminum
- Overall u-value window
- 2.57 W/(m²*K)
- Description of construction
- Low e double glazing 8/16/10
Basement floor
- Description of construction
- Concrete Slab
- U-Value
- 2.7 W/(m²*K)
Technical Building Systems
Ventilation system
- Type of ventilation
- Mechanical ventilation system with heat recovery
- Description
- Wheel heat exchanger on fresh air
Space cooling system
- Primary space cooling system
- Centralised multi-split system│Consisting of one outdoor unit (e.g. located on the rooftop) supplying several indoor units
- Description
- VRV system
Space heating system
- Primary Space heating system
- Air-conditioning system (reversible for heating; air-air heat pump)
- Description
- VRV system
Water heater system
- Primary water heater system
- Dedicated electric heater (dedicated = just hot water generation)
Lighting system
- Primary lighting system
- LED (Light emitting diode lamps)
- Efficiency
- 100
- Description
- With lighting controls and dimming
Photovoltaics
- Capacity
- 40 kWp
- Total module area
- 242 m²
Final Energy Demand
- Energy carrier (1)
- Electricity
- Annual heating demand
- 2.38 kWh/(m²*a)
- Annual cooling demand
- 32.4 kWh/(m²*a)
- Annual lighting demand
- 38.5 kWh/(m²*a)
- Annual hot water demand
- 25 kWh/(m²*a)
- Total specific final energy demand
- 163.22 kWh/(m²*a)
