Indoor Environmental Quality Credits in Green Buildings in India
18 Pages Posted: 11 May 2016
Date Written: April 30, 2016
A critical component of a green building is its indoor environment. Maintaining good IAQ requires enhanced ventilation, increased consumption of energy and thus higher operating costs. Reducing ventilation rates to save energy increases indoor generated VOCs and small particles by an amount that may pose health risks. To strike a balance between the two, integrated design approach towards IAQ and energy is used in green buildings. The study focuses on how to make the rating system more adaptable, where the potential planner is able to understand the rating system and integrate the knowledge to identify the hindrances and how can they overcome the same to attain credits in the rating system. Further for higher adoption of the rating system in India, new aspects that can be included in the rating system and how to make credits easier to attain have been seen. Also in the LEED for India NC/CS rating system there have been India specific changes and the study is warranted to understand how it has been perceived by the users and take their suggestions for improvement of the rating system.
The study was carried out in six buildings which were developed as case studies. Four buildings have been certified under LEED India NC, one under LEED India CS and one is pre certified under LEED India CS. The study revealed the catalysts and hindrances associated with attaining credits under IEQ category. Some of the catalysts were gains in productivity, occupant comfort and wellbeing and improved indoor air quality. Some of the hindrances faced were high implementation cost of technology, amendment in the design of the building and difficultly to coordinate with the MEP, architect and project manager. The study also highlights the suggestions of stakeholders towards making credits under IEQ category easier to attempt and attain. Some of the suggestions were to reduce the threshold value for day lighting from 75% to 50%, exclude individual controls in commercial buildings and restricting CO2 monitoring to AHU level.
Keywords: Catalysts; Green Buildings; Hindrances; Indoor Environmental Quality; LEED for India.
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