Dec 12, 2019

What is Green Building? Why it is Necessary?

What is Green Building? Why it is Necessary?

"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."

Types of Green Buildings

Following are the Green BuildingTypes:
1  New Building
2  Existing Building
3  Homes
4  Residential Societies
5  Interior
6  healthcare
7  School
8  Factory Building
9  Data Center
10 Campus
11 Village
12 Township
13 Cities
14 Existing Cities
15 Sez
16 Landscape
17 Mass Rapid Transit System
18 Existing Mass Rapid Transit System
19 Affordable Housing

Details about Rating Systems

1   New Building


Green New buildings can have tremendous benefits, both tangible and intangible. The most tangible benefits are the reduction in water and energy consumption right from day one of occupancy. The energy savings could range from 20 - 30 % and water savings around 30 - 50%. The intangible benefits of green new buildings include enhanced air quality, excellent daylighting, health & well-being of the occupants, safety benefits and conservation of scarce national resources.

Categories :

Green New Building addresses green features under following categories:

       1 Sustainable Architecture and Design
       2 Site Selection and Planning
       3 Water Conservation
       4 Energy Efficiency
       5 Building Materials and Resources
       6 Indoor Environmental Quality
       7 Innovation and Development


Green New Buildings rating system is broadly classified into two types:
1. Owner-occupied buildings are those wherein 51% or more of the building's built-up area is occupied by the owner.
2. Tenant-occupied buildings are those wherein 51% or more of the building's built-up area is occupied by the tenants.

Certification Levels

Certification Level   Owner-occupied Buildings   Tenant-occupied Buildings      Recognition
1 Certified                               40 – 49                            40 – 49                            Best Practices
2 Silver                                  50 – 59                             50 – 59               Outstanding Performance
Gold                                        60 - 74                             60 - 74                         National Excellence
Platinum                                  75 – 100                            75 – 100                       Global Leadership

2 Existing Building


Tangible benefits:
       1 Energy savings: 15 - 30%
       2 Water savings: 15 - 50%
Intangible benefits:
       1 Enhanced air quality
       2 Health & higher satisfaction levels of occupants

Categories :

Existing Buildings O&M rating system addresses green features under the following categories:
       1 Site & Facility Management
       2 Water Efficiency
       3 Energy Efficiency
       4 Health & Comfort
       5 Innovation

Scope :

Buildings that are 80% occupied (with respect to the carpet area) and operational for a minimum of 1 year are eligible for certification under Existing Buildings Types certification.
Projects already certified and operational for more than 1 year are also eligible to apply for Existing Buildings Types certification.
Campus projects having multiple buildings can be considered as one single project for registration and certification. However, each building has to individually conform to the energy, water, and fresh air mandatory requirements.

Certification Levels:

Certification Level   Tenant-occupied Buildings      Recognition
1 Certified                            50 – 59                           Best Practices
2 Silver                                60 – 69                           Outstanding Performance
Gold                                     70 - 79                             National Excellence
Platinum                                80 – 100                          Global Leadership

All Above data is available on the Green Building Website, you can visit and get the detailed information about it.

Now we will discuss what type of resources need to use in Green building.

Resources Required

1 Recycled Aggregates to be used in Concrete. 
If Possible Need to use recycled concrete for nonstructural members like Fins, Chajjas, Lintels, Patli, Bund Wall, Etc.

2 Fly Ash Bricks or AAC Block Work.
Do not use Clay bricks. instead of use AAC blocks or Fly ash bricks.

3 Cavity Wall with Insulation, DGU system for Glazing having U Value at 1.5.

4 Two wind Tower (18m Height) with drizzling water tank on top to get cool air down and the same air is used for the cooling system of the AC plant. One tower calibrated as 10T AC Capacity.

5. Solar Water System
Need to install a solar water heating system at the rooftop of the building which is dependent on natural resources and saving energy.

6. Terrace with garden to provide roof insulation. 
Terrace gardens will be useful both ways like prevent from heat and saving of space, which can be used at the ground and might be cut the trees.

7. Recycling of water for flushing and gardening. 
Use of Sewage treatment plant and recycle all the water for flushing and gardening.

8. Rainwater harvesting and rainwater collection tank for drinking. 
With the help of the Sand filter, you can easily filter rainwater from building rooftop and collect it in the drinking water tank.

9. The orientation of building to sync with sunlight, shadow and wind flow.
 All Door and Windows Opening designed accordingly east, west and south, north side as well as per wind flow which can be useful to maintain the room temperature in level in each weather.

10. Vermicompost pit. 
This is mandatory to all society and apartments but people are not using the property. This is very useful and vermicompost pit can give us good organic fertilizer and which is used at all the trees in society premises.

11. Use Local Material where possible.
The use of local material is cost-effective as well as little fuel consumption. 

12. Avoid Extra cost for Decoration/ View/ Elevation.  
Minimalism principle to be used. uses natural looks do not go with fancy and decorative items that are made after damage nature. avoid extra elevation treatment like fins, glass, etc. 

13. No wastage of space in building for fantasy.
Use all the space in building premises, don't waste the space to make more decorative. instead of decoration, you can plant the trees in open areas.

14. Avoid Wood
Please avoid all types of wood items which is made after damage. instead of wood, you can use other recycled materials. like instead of wooden frames, use concrete frames.etc.

15. Less use of Electricity
Prepare building/home plan as per efficient natural lighting which is helpful to keep ventilation in-home and less use of electricity.

16. Use non-toxic paint etc.
Toxic paint is made from hazardous chemicals and at the time of application, they are spreading poisons fume or smells in the air, which is harmful to human beings as well as nature.

Use very sustainable material so your building last of ever. like a brick lime mortar.
nowadays considering span and space constraint difficult to use the thick brick wall and lime mortar so used concrete shall be sustainable.

For More details please visit the Green Building Website.

CBEC India

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