- Water conservation is important as only 3% of the world's water is potable and available for drinking. Construction activities currently consume significant amounts of water. - Sustainable construction focuses on reducing water usage through efficient designs, materials selection, rainwater harvesting, and wastewater recycling. Techniques presented included using local materials, reducing cement/steel, harvesting rainwater, installing efficient fittings, and treating wastewater on-site. - A national innovation week is being organized in India to encourage schools to calculate their water usage and carbon footprint to increase awareness around efficient water usage and sustainability.

1. ACCEI Institute &
ACCE (I) Bangalore Center
Sustainable Engineering Series (SES)
Talk 4
RAJENDRA KALBAVI BE, M Tech
EXECUTIVE DIRECTOR
D.K. NIRMITHI KENDRA, NITK
SURATHKAL, KARNATAKA INDIA
Optimizing and Saving WATER in
achieving Green Construction
17th October, 2020

2. Water ,Water everywhere
Acknowledgement
I, deeply acknowledge the immense
contribution given by Scientists, Engineers,
Research Scholars, Authors of books and
articles and contributors in the social media
and internet. I assure, few of the matters
included in this presentation is purely for
Knowledge sharing and not for any commercial
gain
TRYTO SAVE IT, IFYOU CARE

3. Water and human being
•History
•Civilization
•Advent of science
•Urbanization
•Water for all
•Usage and over
usage
•R-R-R-R-R….
•Sustainability
Sustainability and Sustainable Construction
The state in which the
components of eco system
and their functions are
maintained for the present
and future generations
NBC 2016 Part II

4. Sustainability and Sustainable Construction
---3 Pillars
•1. Economic - world is moving
•2. Socio–cultural - identity
•3.Enverionmental - common to everyone
Globally construction consumes
40% of Energy
42% of Water
50% of Raw materials
50% of Air Pollution
50% of Water pollution
Green house gases-solid waste etc

5. Why economise on water usage.
•Total Quantity in the world
•97% are saline in sea
•3% potable water
• 1.2 percent - drinking water
• Glaciers, ice caps
•buried deep in the ground.
•Drinking water comes from
rivers and streams

7. HOW MUCH WE NEED??
Each person
uses about 250
to 350 liters of
water per day
Govt is targeting to supply 130 ltr/p/d in urban,
100 l/p/d in semi reual and 80 l/p/d in rural areas

9. Water
India’s water crisis: The clock is ticking
Water scarcity in India
From Wikipedia, the free encycl
Water scarcity in India is due to both natural and human-made causes.
India’s water crisis is man-made
While climate change certainly played a role, however,
Chennai’s is largely a man-made disaster.
Updated: Jun 26, 2019, 09.50 PM IST
Read more at:
//economictimes.indiatimes.com/articleshow/69953715.cms?from=mdr&utm_sou
rce=contentofinterest&utm_medium=text&utm_campaign=cppst
India has just five years to solve its water crisis, experts
fear. Otherwise hundreds of millions of lives will be in
danger
By JessieYeung, Swati Gupta and Michael Guy, CNN

10. WATER usage scenario in India

12. TotalWater usage scenario in
construction
•water used per unit area of
construction largely remains
undocumented.
•A study by Jadavpur
University in 2016 found -27
Kilolitres/Sq m of total built-
up area.
•actual construction was 2
Kl/Sq m
•water efficiency at the
production stage
•actions at the
consumption stage 20 Kl/ Sq m of Gross Floor Area as found by
the research team in Australia.

13. • energy savings could range from 20 - 30 % and water savings
around 30 - 50%.
IGBC RATINGS

15. Designing as a whole unit -
Concern of all stake holders
•Design with 360 degree
•Avoid Eco sensitive sites
•Like forest, lakes, canals
•Wildlife corridors, wet
land, flood land.
•Follow IGBC Guidelines
•Including demolition and
recycling

17. Natural water system
Maintain existing
water system and
its flow
Reduce surface
runoff - introduce
in-site infiltration
methods
Manage landscapes
Capture water for
reuse
03

18. Avoiding water in Masonry
Construction
For every 1 Sq Mt of wall construction, an
average of 350 liters of water gets
consumed.
04

19. Aerators for taps/ Bubble
tap/ Sensor fittings
05

20. Water
efficient fittings
 Waterless urinals
 Closet with max 6lt/flush
 Duel pipeline for flushing
 Recycled grey water
 Bib cock attachments
 Pushbutton taps-public
 Duel button flush knob
 Many more
05

21. Efficient SewageTreatment
•Bio Digester
•Eco friendly Solution
•No Power required
•Zero maintenance
•Low space requirement
•Clear water output
•Develop Greenery
•Existing Septic tank
conversion
•100% recycling
06

22. Designing and material selection
•Proper ventilation
and open space
•Reduce wall length
•Space efficient
•Locally available
materials
•Local techniques
•Vernacular
Architecture
07

23. Eco-friendly – Green construction
•Usage of locally available
materials
•Avoid Cement and steel intensive
techniques
•Arch foundations
•Arch instead of lintels and beams
•Mud block or Rammed earth walls
•Exposed Masonry
•Filler slabs
•BrickVault Roof
08

24. Harvest Rainwater
•Not a concept only
during rainy season
•Its 365 days year method
•Store water
•Recharge
•Plant trees
09

25. Water Budgeting
•Calculate water falling
on your surface
•WQ = A(Sqm)x CF x ARF
•InstallWaterflow meters
•At inflow and outflow
pipes
•Give star Ratings
•Incentive for staff
•Appreciate
Innovativeness
•Look for unsung hero
10

26. Rastreya Aviskar Saptaha - APJK
National InnovationWeek - on water
efficiency and Carbon Footprint
•All Govt School
to calculate the
total water used
per day/ member
•Water used in
their residence
•Water used for
agriculture
•15th Oct to 21at Oct.
•High School students
to work on carbon
footprint
•One school to
compile the data and
upload as google
form in DSCRT
website

27. Not SOS
Now its
TOT
11

28. Water and finance
- are same
•Hard cash : Surface water
•S.B. Account: Shallow Aquifer
•F.D. Account: Deep Aquifer
YOUTUBE CHANNEL - WATER IS LIFE – SAVE
WATER- RAJENDRA KALBAVI
LIKE-COMMENT-SHARE -SUBSCRIBE 12

30. THANKYOU
QUESTIONS????