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Unit 4 Green Building
What is Green Building? A green building is one which uses less water, optimizes energy efficiency, conserves natural resources, generates less waste and provides healthier spaces for occupants, as compared to a conventional building OR A green building is one constructed with design and construction processes which significantly reduce or eliminate negative impact of buildings on the environment and occupants. In green building practices, efficient use of resources means using water saving fixtures and plumbing elements, energy efficient lighting units and passive solar design. It also involves , the use of energy efficient building materials aimed to attain highly energy efficient building envelope with well insulated walls, floors and ceilings. A well insulated building envelope will helps keeping building cooler
in the summer and warmer in the winter. Reduced energy consumption provides financial benefits for the building owners and helps reduce the carbon monoxide footprint of the building on the environment. 4.1BENEFITS OF GREEN BUILDING
a. Social Benefits -
- (^) Enhance the occupant comfort and health.
- Heighten aesthetic qualities.
- Minimize strain on local infrastructure.
- Improve the overall quality of life. b) Economic Benefits -
- Reduce operating costs.
- Create, expand and shape markets for green product and services.
- Improve occupant productivity.
- Optimize life-cycle economic performance. c) Environmental Benefits -
- Enhance and protect biodiversity and ecosystems.
- Improve air and water quality.
- Reduce waste streams.
- Conserve and restore natural resources. 4.2 PRINCIPLESOF GREEN BUILDING
Just like mining or manufacturing, the construction industry is energy-intensive. The energy demands vary over different stages of the construction. The energy consumed by a building throughout the construction phase and later in its life depends on multiple factors. For example, some of the daily life necessities like lighting and facilities like air-conditioning system require regular power to be operational and hence consume more energy. Due to the high energy demand, it is challenging for architects, civil engineers and builders to design environment- friendly and resource-efficient buildings. These challenges, however, can be met by adopting green building practices. In India, the demand for green buildings is rising steadily. In its Green Building Trends 2016 SmartMarket Report, Dodge Data & Analytics World has predicted that the Green Building Industry in India will grow
The choice of construction material is important in safeguarding the health of the occupants and to make the building safe and sturdy. The focus should be on using quality products that meet the highest standards of safety and health. Many buildings utilize recycled engineered materials and recycled construction debris to create marvellous structures, thereby minimizing the environmental impacts. Sustainability is not a choice but a need of the hour. By adopting the principles of green building, we can continue to live in harmony with our environment. When buying a real estate property, it is advisable to go through the environmental regulations. After all, your dream home should be good for you and for the environment as well.
4.3 SALIENT FEATURES OF GREEN BUILDING:
- Green building can design, build and operate a building that delivers high performance inside and outside.
- Building annually consumes more than 20% of electricity uses in India. green building practices can substantially reduce or eliminate negativity environmental impacts and can improve existing unsustainable design, construction and operational practices.
- Green building reduces operational costs, enhances building marketability. Increase worker productivity, improves indoor environment quality, and reduces potential liability resulting from indoor air quality problems.
- People friendly GREEN building design gains productivity by 16%, reduction in absenteeism and improved work quality, which benefits building stakeholder, including owner, occupants and general public
- In development circles, green has gone from a boutique idea to a mandatory part of the architecture and construction.
- Almost all construction waste is recycled or reused.
- Green buildings consumes about 25% less energy than conventional buildings.
- In green buildings interiors are done with low V.O.C content materials, adhesives, sealants. Paints and carpets, which reduces allergies and illness.
Typical Features of Green building
1. Sustainable Development
- Site development - Protect and restore habitat- Maximize open space.
- Heat island effect- Roof and Non-roof.
- Basic amenities.
- Parking.
- Transportation and alternate transportation.
- Design for differently able.
- Storm water design- quality and quantity control.
- Development density and community connectivity.
- Light pollution reduction.
- Green home guidelines- design and post occupancy. 2. Water efficiency
- Water efficient landscape.
- Innovative waste water technologies.
- Gray water treatment.
- Use of treated gray water.
- Water use reduction.
- Ground water recharge.
- Roof rain water recharge/harvesting.
- Rain water harvesting.
- Water efficient fixtures. 3. Energy efficiency
- Passive cooling system.
- Passive ventilation system.
- Energy in building construction.
- Advance windows and energy savings.
- Fundamental building system commissioning.
- Enhanced building system commissioning.
- Minimum energy performance.
- Optimize energy performance.
- Active energy efficiency.
- CFC reduction in HVAC equipment.
- Fundamental refrigerant management.
- Enhanced fundamental refrigerant management.
- Building energy simulation.
- Building envelope design.
- On-site renewable energy.
- Hybrid energy.
7. Regional priority
- Energy conservation.
- Water conservation.
- Disaster management plan.
- Meditation room.
- Environmental tobacco smoke control. 4.3.2 Environmental design (ED) strategies for building construction Site selection and design. Architectural design for sustainability. Indoor environmental quality. Building energy use- Mechanical systems. Building lighting, equipment, energy management and utilities. Water management. Materials and resources. Construction. Commissioning.
