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Engineer's Day 2013 - Final Presentation - Green Building

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by

Geet George

on 14 November 2014

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Transcript of Engineer's Day 2013 - Final Presentation - Green Building

ENGINEER'S DAY 2013
FACULTY OF TECHNOLOGY
IMPACT AND RESPONSE OF REAL ESTATE DEVELOPERS AND CONSUMERS TOWARDS GREEN CONSTRUCTION
CEPT UNIVERSITY
CELEBRATES
14th - 15th September, 2013
OBJECTIVE
To Evaluate the existing green buildings in terms of performance of green components, their cost impact as well as benefits & to furthermore assess the awareness and readiness of consumers to opt for green construction practices.

SCOPE OF STUDY
Study of Technical Aspects and Comparative Analysis

To compare green building construction with prevailing conventional construction practices in terms of its impact on environment & cost incurred

Assessment of Perception of Green Building Construction among the Masses

To determine public awareness and attitude towards green buildings through social survey with a sample size of 300 spread across varied age groups, income groups, localities and religions

Awareness & Motivation Methodology:

To identify the mindset of general public of Ahmedabad regarding the green building and ascertain the overall benefits of green building construction from the above analysis and convert it in unit form for a common man to understand the generic benefits of an eco friendly / Green building

NEED
Green Buildings along with saving the environment provide significant reduction in operational costs of the buildings in terms of reduction in the energy and water requirements of the building, resulting in considerable monetary benefits over the period of useful age of buildings, though over a marginal increase in the total initial cost. Thus, an awareness about the concept is needed among the masses.
IDENTIFYING NEEDS
ASSESSMENT OF THREE DIFFERENT ALTERNATIVES
SHORT LISTING OF TOPIC
FINALISATION OF TOPIC FOR E-DAY 2013
IDENTIFYING OF DIFFERENT SCOPES
FINALISATION OF SCOPE
DECIDING WORK DISTRIBUTION
EXPERT ADVICE
PRELIMINARY LITERATURE STUDY
INPUT FROM EXPERTS
PUBLIC OPINION
EXPERT/FACULTY INPUTS
TOTAL SCOPE OF STUDY
TECHNICAL TEAM
SOCIAL TEAM
COMPARATIVE STUDY OF EXISTING GREEN BUILDINGS IN AHMEDABAD
COMPARISON OF IGBC GUIDELINES WITH GDRC, EIA/EC
SURVEY OF CONSUMERS
AWARENESS ABOUT GREEN BUILDINGS
PRESENTATION
SHORT NOTICE
INTERACTIVE SESSIONS
INPUT OF TECHNICAL DATA FROM LITERATURE STUDY
TOTAL SCOPE OF STUDY
TECHNICAL TEAM
SOCIAL TEAM
COMPARATIVE STUDY OF EXISTING GREEN BUILDINGS IN AHMEDABAD
COMPARISON OF IGBC GUIDELINES WITH GDRC, EIA/EC
SURVEY OF CONSUMERS
AWARENESS ABOUT GREEN BUILDINGS
PRESENTATION
SHORT NOTICE
INTERACTIVE SESSIONS
INPUT OF TECHNICAL DATA FROM LITERATURE STUDY
SURVEY FOR END USERS
SEQUENCE FOR DATA COLLECTION AND PROGRESS
IDENTIFYING PARAMETERS AFFECTING CONSUMERS FOR BUYING HOMES
FINALISATION OF PARAMETERS
INPUT FROM LITERATURE STUDY
DRAFTING QUESTIONNAIRE
FINALISATION OF QUESTIONNAIRE
INPUT FROM FACULTY/EXPERT OPINION
DECIDING THE DESIRED CHARACTERISTIC SAMPLE
DECISION ABOUT FINAL SAMLE SIZE AND LOCATION
PREPARING SURVEY GROUPS
DATA COLLECTION
ANALYSIS AND INFERENCES
LITERATURE STUDY
LIBRARY STUDIES
ONLINE STUDIES
THESIS
LITERATURE SECTION
CASE STUDIES IN AHMEDABAD
IDENTIFYING GUIDELINES
COMPLIANCE WITH RULES AND REGULATIONS
TECHNICAL ANALYSIS
LITERATURE STUDY
IDENTIFYING GREEN BUILDINGS IN AHMEDABAD
COMPARISON OF IGBC, EIA
ANALYSIS
GATHERNG SECONDARY DATA ABOUT BUILDING
DECIDING SAMPLES FOR COMPARISON
GATHERING OF SECONDARU DATA OF COST
COMPARISON OF GREEN BUILDINGS WITH RESPECT TO COMPLIANCES OF IGBC NORMS
FINDING INCREMENT WITH RESPECT TO INITIAL COST
CALCULATIONS OF SAVINGS AND ROR
CONCLUSION
METHODOLOGY
INTRODUCTION TO GREEN BUILDING TECHNOLOGY
Incorporates environmental considerations into every stage of the building construction
Focuses on the design, construction, operation and maintenance phases. 
Working from the pre-design phase through post-occupancy to optimize the building for environmental sustainability, performance, and cost saving.
 The major considerations taken into account:
Design and Development Efficiency,
Energy and Water Efficiency,
Resource Efficiency (Green Materials such as AAC blocks)
Indoor Environmental Quality and
The Building’s Overall Impact On The Environment

Being eco-friendly without compromising on the comfort of occupants and doing it economically at the same time.
“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.”

PHILOSOPHY OF GREEN BUILDINGS
GLOBAL SCENARIO
LITERATURE STUDY
TECHNICAL STUDY
The scope of the technical study includes
(i) A comparative study of selected green buildings in Ahmedabad
(ii) A study of how different green features affect the cost of the project and the environmental impact of each of them
(iii) A study of the requirements of GDCR, Environmental Impact Assessment certificate/ Environmental Clearance certificate and those set by the rating agencies...
...and finally, a conclusion co-relating the various results obtained from these studies.
TECHNICAL STUDY
COMPARISON OF BUILDINGS
The following buildings were compared with each other:

1. Shapath Hexa
- Commercial Tower (18,559 sq m)

2. Earth Arise
- Office Building (12,125 sq m)

3. Savvy Solaris
- Residential Building (42,634.10 sq m)

4. Shapath V
- Commercial + Office Building (49,766 sq m)
A study was made to compare the various green features included by the projects and which methods were adopted by them to achieve the credits for the same.
These evaluation studies were then used to derive the increase in the initial cost of the project, the calculations of which are shown hereby.
COMPARISON OF THE PROJECTS
The initial cost percentages have been derived using calculations as follows:
(I) The costs of the products have been considered from latest market trends, known from experts and/or a reputed dealer in the market, depending on the fixture/appliance in consideration.
(II) These costs were then brought down to same terms in the unit of cost per built-up area of the project. This was done by different methods for different parameters such as occupancy calculation per unit area, lighting load per unit area etc.
(III) These costs were then compared to the conventional cost of construction per sq m, and thus mentioned as a percentage of the same.

METHOD OF COMPARISON
CALCULATION OF INITIAL COST
Assumed values are as follows:
1.Construction cost (for base case) : Rs. 10,765 / sq m
2.Energy Savings : Rs. 130.5 / sq m (annually)
3.Water Savings : Rs. 88.36 / sq m (annually)
4.Total Savings (Energy + Water) : Rs. 218.86 / sq m (annually)

ASSUMPTION OF VALUES
From the above table , the payback period can be calculated to somewhere between 3 and 4 years. From the 5th year onwards, all savings can be taken as profit, as the initial investment has already been paid back through savings in the first 4 years. The RoR (Rate of Returns), if calculated for the project, will be very high because for a building whose design life is around 25-30 years, it has started giving profitable returns in the first 5 years itself.
RESULTS OF ANALYSIS
The social study was divided into two aspects:

(i) The social survey - To assess the awareness and readiness of the people towards the concept
(ii) The awareness programs - To bring about an awareness among the masses about the concept
SOCIAL STUDY
DEMOGRAPHY FOR THE SURVEY
SAMPLE SIZE : 300
POPULATION COMPOSITION
REVIEW OF GUIDELINES
Finding and Suggestions
1. External Refernces Raising complexity
2. Disparity in Credit Weights
3. Lack of Clarity for Inter-Related Credits
4. Neutral Attitude for Passive Design Techniques
5. Pre-assumption for Integrated Design
6. INtent-Based v/s Performance Based
CONCLUSION
For an initial increment of 5.52% in the cost, a payback period of only 3-4 years is a huge monetary gain.

The comparison between the GDCR norms, requirements of the EC certificate and credits of the IGBC show that the extra effort needed to make a building “green” is not much, considering that most of the requirements of the IGBC are already incorporated in the local norms and/or the EC formalities.
The literature study, data gathered, analysis done and the inferences observed clearly state that the concept of constructing a green building is a win-win for the developers, consumers as well as for the environment.
The awareness about green buildings is very low in Ahmedabad, and as most of the customers are not demanding eco-friendly features in buildings, the supply from the developers' side is also limited.
As we see, among the preferences of a home buyer in Ahmedabad, location and cost rank the highest. Thus to improve the demand of green buildings, its tangible benefits are to be minutely monitored and be proved consistently for different projects.
THANK YOU FOR LISTENING.
GO GREEN
There needs to be backing from credit agencies for use of passive techniques and proven traditional designs. The LEED system has to be refined to suit the local climate
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