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ECO FRIENDLY BUILDINGS

As environmental problems such as global warming and clean water supply have become increasingly serious, the environmentally friendly / sustainable building concept is becoming increasingly popular these days. As a result of the researches, 40 % of the world's energy consumption and 30 % of the water consumption have been resulted from the buildings. In addition, about 90 % of human life passes by the buildings. All of these reasons reveal the need for a more efficient, more livable and environmentally friendly building that consumes less resources. Environmentally friendly buildings do not only save energy and water, but also give great importance to the health and comfort of the occupants. When designing environmentally friendly buildings, elements that directly affect human health such as indoor air quality, natural lighting, temperature and humidity control and waste management are planned and with the methods used in the construction, it is aimed to leave cleaner environment to the end user. According to some studies, it is seen that those who work or live in eco-friendly buildings are less sick and have higher working performances than those in other buildings.

Why Do We Build Eco-Friendly Buildings?

Buildings constructed with traditional methods consume 70% of energy and materials, 17% of water, 25% of forests and 33% of CO2 emissions. Only 5% of recycled materials are used in traditional buildings.

With Green Buildings; it is possible to reduce waste, reduce indoor energy costs, increase the comfort and efficiency of the building users, reduce the health expenses of the employees, low operating and maintenance costs, in particular energy and water saving. On average, Green Buildings consume about 30% less energy than classical buildings. Water consumption of Green Building is also very low; waterless urinals, efficient reservoirs, washbasins and shower baths can be used to save up to 50% water. In green projects, various strategies can be followed in landscaping areas and 50% water saving can be easily achieved.

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Eco-Friendly (Green Building) Certification
LEED “Leadership in Energy and Environmental Design”

The LEED(Leadership in Energy & Environmental Design) green building certification system is the accepted program all over the world for rating the design, construction and operation of green buildings which is given by The United States Green Building Council (USGBC) since 1998.

The LEED system is a long process starting from the design process to the completion of the building. This process concerns multiple disciplines. The rating systems can be changed for specific building typologies, sectors, and project scopes:

  • New Construction
  • Core & Shell
  • Commercial Interiors
  • Schools
  • Existing Buildings: Operation & Maintenance
  • Homes
  • Healthcare
  • Retail Commercial Interiors
  • Neighbourhood Development

The rating systems evaluate buildings in seven main categories. These are:

  1. Sustainable Sites,
  2. Water Efficiency,
  3. Energy & Atmosphere,
  4. Materials & Resources,
  5. Indoor Environment Quality,
  6. Innovation in Design,
  7. Regional Priority.

Under each sub-title, there are definitions of pre-requisites and credits. First of all, compliance with the pre-condition will be ensured, then the points under each credit will be collected. The project will be awarded at Certified, Silver, Gold or Platinum level according to the scores it has collected in these subtitles.

LEED certifications are awarded according to the following scale:

Certified: 40-49 points
Silver: 50-59 points
Gold: 60-79 points
Platinum: 80-110 points

LEED headings include:

  • Encouragement of public transport and alternative transport systems,
  • Application of methods for water saving and efficient use of water,
  • Design and system selection to increase energy efficiency,
  • Increase and control of indoor air quality,
  • To prohibit indoor smoking and reduce the release of harmful volatile organic compounds,
  • The topics such as benefiting from sunlight are assessed and scored.
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NIVO ISTANBUL AND LEED SYSTEM

NIVO ISTANBUL project aims to certify at GOLD and SILVER level in LEED NC (New Construction) rating system. In this context, many environmental and human friendly features have been integrated into project design and construction phases.

Some of the sustainable strategies and solutions implemented in the NIVO ISTANBUL project under the LEED System are below.

Sustainable Sites

  • Nivo Istanbul is in a location where a sub-structure is established. Thus, it can serve the users and the visitors without damaging the nature. All users of the complex are able to take advantage of the public transport facilities within walking distance and access the social facilities where they can meet their daily needs.
  • A sufficient amount of safe bicycle parks were designed for building users and visitors, thereby reducing the use of individual vehicles by supporting alternative transport and supporting sports facilities. (Provided for blocks to which the GOLD certificate level is targeted.)
  • Electric vehicle charging stations are installed in parking lots to prevent emissions from individual vehicle use.
  • Vegetated spaces are used in landscape design. The roof and terrace floors have light colored coating materials. In addition, the car parking areas are mostly at basement floors. Therefore, the heat island effect caused by the car parking areas in the landscape is reduced.

Water Efficiency

  • With the use of efficient batteries and reservoirs that consume less water, water consumption has been saved by over 35% according to the international EPA (Environmental Protection Agency) standards in water consumption.
  • In the landscape design of the project, regional & adapted plant species with low water consumption and efficient irrigation systems are preferred. Thus, it is aimed to reduce landscape water consumption by 50% compared to the base building determined by EPA (Environmental Protection Agency).
  • The intense use of vegetated areas in landscape design and the use of water-permeable materials on hardscapes will reduce the amount of water transferred to the network during heavy rainfall and thus prevent overflows.

Energy & Atmosphere

  • All energy-consuming systems in the building were inspected in accordance with the commissioining procedures specified by LEED. They have been checked to ensure that they are operating in accordance with the performance criteria that were targeted during installation and use. Therefore, it will minimize operational cost.
  • Energy efficiency has been emphasized in all service systems used within the scope of the project. The requirements of the American Energy Efficiency Standard (ASHRAE 90.1-2007) are pre-regulated using efficient lighting fixtures, heating, cooling and ventilation systems. Energy efficiencies of building systems designed in accordance with international standards are evaluated based on the efficiency of the devices selected, and possible inefficiencies were identified and corrected at the design stage and optimum solutions were provided for energy efficiency.
  • ASHRAE 90.1 2007 standard is used as reference for the interior lighting calculations in the project and all spaces except the dwelling units are included in the calculation. Accordingly, 20% saving is achieved.
  • It is aimed to reduce the energy need of the building with the high performance insulation materials used in the building shell.

Materials and Resources

  • A large part of the waste generated during the construction of the building has been recycled and / or recycled, reducing the amount to the waste site by as much as 75%. In this context, all domestic waste and recyclable wastes from the construction process were regularly monitored
  • The project has taken care to use Recycled Content and Local Materials.
  • During operation, recyclable wastes will be collected separately and recycled.

Indoor Environmental Quality

  • The comfort and health of building users, visitors and the people living in it are the main items that the LEED system considers. In this context, the building is preferred to the international limits of VOC (volatile organic harmful compound) content of building chemicals (paint, primer, adhesive, paste etc.) used in the interior during construction.
  • Building circulation, common areas and ventilation needs of commercial areas are integrated to the project in compliance with ASHRAE 62.1 standard. With the increased fresh air supplied to the buildings, occupants are expected to live in a healthy and comfortable environment.
  • The issues related to the protection of the common areas of the buildings, the materials stored for use in the construction, the ventilation ducts and the general cleaning of the construction site were monitored through regular site controls.
  • The indoor thermal comfort design is in accordance with ASHRAE 55-2004 standard.
  • In addition to smoking is prohibited in the public areas inside the building, smoking is prohibited outside within 8 meters near to the openings of the buildings. Information is provided with warning signs in building entrances and landscape areas. In addition, measures are taken in order to prevent smoke from reaching other areas in case of smoking inside the dwelling units with individual usage.
  • While planning the design, it has been provided that the occupants used the dwelling units, common and social areas benefit from the optimum daylight and quality views.