economic evaluation and comparison between green building and conventional building

A Project Presentation on the Topic Green Building

(8th sem B.E. Civil)

R. K. College of Engineering & Technology

By:- Mr. Manthan I. Shah (090380106013) Mr. Keshav N. Jayaswal (090380106053) Mr. Sumit S. Punjabi (090380106043)

Internal Guide:-Prof. Apurva Dave Asst. Professor R.K.C.E.T.

External Guide:-

Prof. Dipsha Shah CEPT University

Group No.: RKCET/CIVIL/09/03

D e f i n i t i o n

Economic Evaluation and Comparison between Green Building and

Conventional Building

Introduction to Project• Economy is the major factor in any type of construction work,

especially for residential houses and more specifically when they are situated in the megacity in a Developing country like India.

• There is a need of concentrating on a Green Home, which is one of the most important and one of the most discussed topics throughout the globe, in the age of global warming and climate change worldwide.

• In this situation, some middle way is necessary to be found out, to encourage the Green Construction.

Introduction to Project

• Aim:

The aim of the project is to “Find out a simple and

economical way of constructing a Green Home which a common

man from a middle class or an upper middle class family can easily

afford.”


• Objective:The objectives of the project are:i. To compare the cost of construction of a home as a Green

Home & a Conventional Home.ii. To find out energy and water savings in a Green Home over

the Conventional home.iii. To find out percentage increase while constructing a Green

Home instead of a Conventional Home.iv. To find out the middle way to encourage the Green

Construction.


• Need of The Project:

The reasons why this project is important are listed below:i. It is general belief that a Green Home will cost much more

than a Conventional Home, but some middle way is required to be found out by analyzing the real situations & conditions in the market.

ii. In these days, when everyone is talking about the Green construction, there is need of a way by which a common can afford a Green Home.


• Scope of The Project:The Scope of the project is listed below:i. This typical case selected in the project would be useful

while considering cases for residential sites.ii. This project will be identical for the persons who are

associated with this type of work, to construct a Green Home rather constructing a Conventional House, bearing some extra initial costs which will be paid back in some years after starting the use.

iii. This will be beneficial for the people who are really conscious about the environmental impact of the buildings and believe in energy conservation.


• Methodology:

The figure below represents the Methodology in Chart format:

Introduction to Green building

• Definition:“A green building is one which uses less water, optimises energy

efficiency, conserves natural resources, generates less waste and provides healthier spaces for occupants, as compared to a conventional building.”

• Elements of Green Building:There are 4 elements of Green Building. That shows the main

points required to be considered while designing any building.• Smart Design• Energy Efficiency• Eco Materials• Water Conservation

Case Studies on Green Buildings

1] Shapath V, S.G. Highway, Ahmedabad• The major features of Shapath V, highlighted by SAVVY group are as

under:– Energy Efficient Building– Multi Level Parking– 11 feet Floor Height– Central Air Conditioning with Chilled Water Supply– Water Recycling– 40% Water Efficiency– Onsite Sewage Treatment plant– Use of Eco-friendly, Recyclable, Recycled, Renewable materials– Double Glazed Windows


Cont..........• Remarks about Green Construction after this Visit:

– Aerated Concrete blocks– If Certified Wood or Recycled Wood– HVAC criteria should be considered.– Insulated DG Units– LED lighting fixtures.– Taps and flushes of minimum discharge and low pressure of water.– PPC or OPC with flyash.– Rain Water Harvesting System– Onsite Sewage treatment Plant– Fire resistant wires and PVC pipes


2] Solaris, Visat-Motera, Ahmedabad• The major features of Solaris, highlighted by SAVVY group are as

under:– Low Energy Cost– 75% Open Space– Water Meter– Water Recycling– Percolation Wells– Garbage Suits


Cont.............• New things concluded after the visit, about the Green Construction are listed

below:– Flyash Bricks– In large area, the Sewage treatment Plant.– LED lighting fixtures.– Taps and flushes of minimum discharge and low pressure of water.– No wooden frames should be used, Aluminum frames are more preferable.– Rain Water Harvesting– Percolation wells– Non VOC paints on the internal walls.– PPC or OPC with flyash.– The doors may be made from the eco-friendly materials.


Cont.............• Garbage Suits may be provided to collect the all garbage at one

place.


Implementations From the Case Studies:• The following is the list of the items in which the appropriate changes

as per the project criteria are made, in the desire of economic Green Home:

– Windows – Lighting Fixtures– Plumbing Fixtures– Flooring– Doors– Paints– Bricks– Cement– Installation of Rain Water Harvesting System (in addition, not to be changed)

Estimate of The Material Quantities

• A bungalow is selected as a site of our project.• The detailed drawings are used for the estimation of the quantities.

Materials Replaced in Green Building

• The table bellow shows the materials used in Conventional & Green Home respectively for different items:

Sr. No.

Item Conventional Material Green Material

1 Windows and Openings Aluminium Panelled Plain Glasses

Insulated Glass (IG Units)

2 Lighting Fixtures Tube Lights & CFLs Low Watt LED Tube Lights & Bulbs

3 Plumbing Fixtures Conventional Fixtures Special Green Fixtures

4 Flooring Vitrified & Glazed Tiles and China Mosaic

PVC Flooring, Glazed Tiles and China

Mosaic5 Doors Pine Wood Engineering Wood

Materials Replaced in Green Building`

• Cont..........

Sr. No.

Item Conventional Material Green Material

6 Paints Plastic VOC Plastic Non VOC

7 Bricks Clay Bricks Flyash Bricks

8 Cement OPC PPC

9 Installation of Rain Water Harvesting System

Not Provided Provided

Green Materials

IG Units:• Nearly 15-20% of all home energy

is lost via windows and doors, having energy efficient windows in your home should be a priority.

• For that, the best suitable option is to use Low-E glasses.

• The main aim of DG Glasses is to prevent heat on the side of glass where it originates.

Green Materials

LED Fixtures:• In green buildings, the only type of the lighting fixtures used is LED

(Light Emitting Diode) Fixtures.• This type of lighting fixtures are somewhat costly, approximately 4

times higher prise than the normal ones.• These are solid lights which are extremely

energy-efficient.• A significant feature of LEDs is that the

light is directional, as opposed to conventional bulbs which spread thelight more spherically.

• Different types of LED fixtures are Shown in the table 5.3 of report.

Green Materials

Plumbing:• In the Green Plumbing the Plumbing Fixtures discharge ranges from

5 l.p.m to 15 l.p.m.

• Green Plumbing includes the Fixtures as below:– Faucets discharge ranges between 5 l.p.m to 8 l.p.m.– Showers discharge ranges between 10 l.p.m to 15

l.p.m.– Water Closet (W.C.) discharge ranges between 7 l.p.m

to 12 l.p.m.

Green Materials

PVC flooring:• PVC vinyl flooring is a type of synthetic flooring.• Floors such as wood and marble are made from natural materials,

but PVC vinyl flooring is made from a synthetic plastic called polyvinyl chloride.

• It is easy to install.• PVC vinyl flooring is affordable, water resistant and very durable.

Due to its synthetic nature, PVC vinyl flooring is also more customizable than natural flooring.

• To keep PVC vinyl flooring in optimal condition, regularly vacuum and polish the floor. Never use any rough-surfaced cleaning tools on the floor, as they often result in scratches.

Green Materials

Green Wood Or Engineering wood:• Engineered wood products are made from a combination of wood

fibres, strips, and veneer sheets.• Smaller diameter trees of the same hard and soft wood used to

manufacture lumber are also used.• Engineered wood products are also called composite wood, and the

materials are bonded together using an adhesive resin which makes the finished product resist warping.

• Some different products made from engineered wood include flooring, several types of lumber, and particle board

Green Materials

Green Paints:• paints with reduced levels of VOCs are more eco-friendly than

conventional paints, some house paints have an even lower environmental impact.

• Homeowners can select premium-grade zero-VOC paints that also use VOC-free colorants, are free of vinyl and other plasticizers and include no toxic biocides.

Green Materials

Bricks:• Flyash Bricks are considered as the Green material of construction. • So in this case it is used in the Green Construction.

Cement:• If PPC (Portland Pozzolana Cement) is used in construction, it will be

green Material Because PPC contains the flyash as the main ingredients.

Green Materials

Rain Water Harvesting:• The principle of collecting and using precipitation from a

catchments surface . • There are two main techniques of rain water harvestings.

– Storage of rainwater on surface for future use.– Recharge to ground water.

Energy Savings• The savings in the energy will be 70% per year, which is near about

` 10,000 per year.• The life of the LED fixtures will be more than 17 years

(50000/8/365=17.12). Same way the life of the tubelight is about 5 years (15000/8/365=5.14) and that of the CFL is about 2 years (6000/8/365=2.05).

Water Savings• Water fixtures use per day per person (6 persons):

– Basin : 4 Times a day– Sink : 4 Times a day– Wash Area : 4 Times a day– Shower : 2 Times a day– W.C. : 1 Times a day– Urinals : 3 Times a day

• Total Water Saved = 74 liter/ day/ person =74*6=444 liter/day

Cost Analysis and Comparison• The analysis and the comparison of cost for each item is as shown

in the chapter 6 of the report.

Cost Comparison• The table bellow shows the Cost Comparison of each Item:

Sr. No. 8Item Name

Cost in Conventional

Home (`)

Cost in Green Home (`) Difference (`)

1 Windows and Openings 1,30,800 2,07,350 76,550

2 Lighting Fixtures 12,800 46,150 33,350

3 Plumbing Fixtures 44,885 1,08,300 63,415

4 Flooring 2,28,540 2,84,295 55,755

5 Doors 69,830 1,62,510 92,680

6 Paints 1,56,380 1,58,880 2,500

7 Bricks 50,175 30,105 -20,070

8 Cement 9,66,000 9,83,250 17,250

9 Rain Water Harvesting System 0 80,700 80,700

Total (`) 16,59,410 20,61,540 4,02,103

Cost Analysis and Comparison• The Chart bellow shows the Cost Comparison of each Item:

Conclusion1) If the Home is Constructed as a Green Home in this project, the total cost

increases by ` 4,02,130, in addition to the total construction cost of the Conventional home which is found to be ` 31,07,415.

2) The percentage increase in total construction cost is 12.94% (say, 12 - 15%).3) The saving in money, which is about `10,000, will be the clear saving after

the payback period of LED fixtures is completed.4) Water saving is about 444 (say, 440) liter/day.5) Payback period, considering savings only in the electricity bills, is found to

be 35 years.6) So, on the bases of the above figures, it can be concluded that:

– “If the intention is to construct a new Home to live in, it is advisable to go for a GREEN HOME rather than the ordinary conventional home. Because, the percentage increase of 12.94% in the total cost is not a negligible amount when the intention is just to renovate or retrofit an Old Home”

Thank You