Asian Architecture Project 1 Case Study

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Asian Architecture [ARC 2234/ARC 60403] Project 1: Case Study Paper The Indoor Environmental Quality and The Effectiveness of Adopting Shera instead using timber as Sustainable Building Material in Kampung Villa, Pulau Banding. Student Name: Lim Choon Wah Student ID: 0311265 Semester: July 2015 Tutor: Puan Norhayati Ramli

Transcript of Asian Architecture Project 1 Case Study

Asian Architecture [ARC 2234/ARC 60403]

Project 1: Case Study Paper

The Indoor Environmental Quality and The Effectiveness of

Adopting Shera instead using timber as Sustainable Building

Material in Kampung Villa, Pulau Banding.

Student Name: Lim Choon Wah

Student ID: 0311265

Semester: July 2015

Tutor: Puan Norhayati Ramli

The Indoor Environmental Quality and The Effectiveness of Adopting Shera instead using timber as Sustainable Building Material in Kampung Villa, Pulau Banding.

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Table of Contents Page

Abstract ............................................................................................................................. 2

1.0 Introduction .............................................................................................................. 3

1.1 Research Question ............................................................................................. 3

1.2 Objective Question ............................................................................................ 3

2.0 Overview .................................................................................................................. 4

2.1 Micro-Climate in Belum Rainforest Resort .................................................... 4-6

2.2 Composition and Characeristic of Shera ...................................................... 7-10

2.3 Environmental Issues ...................................................................................... 11

3.0 The Indoor Environmental Quality of Shera in Kampung Villa ........................... 12-15

4.0 The Application of Shera in Kampung Villa ............................................................. 16

5.1 Wall ............................................................................................................. 16-17

5.2 Roof ............................................................................................................. 17-18

5.0 The Effectiveness of Shera in Kampung Villa ................................................... 19-20

6.0 Conclusion and Future Recommendations .............................................................. 21

7.0 References........................................................................................................... 22-23

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Abstract

This case study of Shera is at Belum Rainforest Resort which is located at Pulau

Banding, surrounded by a dense forest and lake. The designer carefully selected and fused

the building materials, assemblies and the practiced used into the building as a mean to

tackle the issue and their impacts to the surrounding. The purpose of the research is to find

out the fundamental reason behind the sustainability problems that exist such as sick

building symptoms, indoor air quality, negative environmental impacts, waste production,

and the deterioration of environmental quality among building material. Hence, the

manufacture, usage, properties, cost and transportation of the Shera play an important role

that substitute for timber to reduce negative environmental impacts. In assisting the

validation of research, literature reviews based on various sources from journal, website,

books and a site visit to Belum Rainforest Resort was conducted to enhance the study. In

order to provide a wider research, environmental issue can be resolved with the selection of

sustainable building materials which present in Traditional Malay House and Kampung Villa

located at Belum Rainforest Resort as comparison studies. Investigation and analysis are

carried out in adopting Shera instead timber in terms of environmental sustainability, issues,

applications and effectiveness that had been applied. Besides that, the adoption of Shera as

the main building material enhances the sustainability instead of using timber which lacks in

efficiency. As a conclusion, this case study is to demonstrate the significant impact of Shera

in Kampung Villa and the issues of adopting timber may affect environment and occupant in

building. Furthermore, Shera can be adopted into contemporary architecture with the

method of long term sustainability to reduce impacts.

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Introduction

Ever since, the sick building syndrome (SBS) came into a building. The designer and

consumers are concerning the impact of sick building syndrome might harm the occupant.

The designer of Kampung Villa had design a good indoor environmental quality (IEQ) to the

occupant to reduce the risk of symptoms by choosing the harmless material accompanied

with sustainable to the environment. The building materials that achieve this result was

called Shera that can be used as interior and exterior that does not emit toxics to our

respiratory system. Hence, the composite wood may contribute to indoor air pollution

which taking the risk of occupant life. The owner also should ensure the good indoor air

quality to his occupant to stay his resort.

Research Question:

1) What is the effectiveness of adopting the Shera compare to timber in Kampung Villa in terms of sustainability? 2) Why is the Shera so significant use as main building material to act as solution instead by using timber in Kampung Villa to achieve sustainable? 3) What is the indoor environmental quality (IEQ) of Shera can be achieved in Belum Rainforest Resort’s Kampung Villa instead of timber?

Objective Question:

1) The Shera had provided effectiveness in Kampung Villa that becomes a substitute material for timber by achieving sustainable. 2) The significant impact of adoption The Shera use as main building material had become solutions to enhance the sustainability instead by using timber in Kampung Villa. 3) The indoor environmental quality (IEQ) of Shera had been use as sustainable building material in Kampung Villa.

The Indoor Environmental Quality and The Effectiveness of Adopting Shera instead using timber as Sustainable Building Material in Kampung Villa, Pulau Banding.

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2.0 Overview

2.1 Micro-climate in Belum Rainforest Resort at Pulau Banding

Belum Rainforest Resort is located on the Peninsular of Malaysia and is coordination

was 5.5°north latitude, 101.4°east longitude. Due to being close to the equatorial, the

climate at Belum is classified as hot humid tropical climate with abundance of sunshine, high

humid, high temperature, strong glare, high solar radiation levels, and rainfall along the year

with accompanied by the Southwest and Northeast Monsoon.

Location

Figure 2.1.1: The Belum Rainforest Resort was located at the border of Malaysia and Thailand.

Figure 2.1.2: The micro side of Belum Rainforest Resort accompanied with the West-East highway.

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Sun

Figure 2.1.3: The Annual Sun Diagram Path at the location of Kampung Villa

(Source: Ecotect – Sun Path analysis)

According the figure 2.1.3, the building was the section of Traditional Chalets located

at Belum Rainforest Resort. The solar angle in Belum is high, around 65° in 12pm and around

19.1° in 6pm of the 21st June 2015. While the east sun of Pulau Banding is blocked by the

higher hill.

Wind

Figure 2.1.4: The Annual Wind Rose – frequency (left) & speed distribution (right) diagram at the Kampung

Villa (Source: Revit – Wind analysis)

Based on the figure above, the wind rose of frequency and speed distribution are

strong at northeast direction and southwest direction due to northeast and southwest

monsoon (Chew, 2013). The weakest were north and south direction along the year. The

The Indoor Environmental Quality and The Effectiveness of Adopting Shera instead using timber as Sustainable Building Material in Kampung Villa, Pulau Banding.

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highest temperate at Pulau Banding was around 29-32°C at daytime during February and

March. It can be dropped as low as 21-22°C at night time due to the frequently raining.

During September and October were the highest raining day accompanied with the strong

wind of northeast monsoon compare to the other months. The lowest raining day was Jan

and Feb along the year in Malaysia state by (Hashim, Reid & Ngah, 2012). According to the

Revit software of humid analysis, it state that average of annual of humidity is 90-95%

because it is surrounded by Temengor Lake and situated in tropical rainforest, so eventually

the humidity level is much higher than the usual humidity level in Malaysia .

Figures 2.1.5: Temengor Hydro-electric dam at Pulau Banding (Source: Olive, 2011)

As conclusion, the Belum Rainforest Resort experiences hot and humid and average

of 2700mm strong wind along the year. During May and September, it is dry season for

Belum because the dam of Temengor Lake is open to allow water out. In September to

March, the Northeast monsoon brings strong winds that have maximum speed of 3.5m/s of

heavy rain (Ahmad, 2006).

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2.2 Shera Green building should avoid harmless and non-toxic building materials are playing an

important role towards the environment and building users. Before explore why Shera had

been used as sustainable building material instead of timber in Kampung Villa by achieve

environmental sustainability and living quality. Alternative to traditional timber boards,

Shera board is also a durable, cost-effective, various aesthetically texture, low maintenance,

and weather resistant. On the other site, there were many materials produce harmful and

health issues such as timber. The Shera boards as sustainable building material will

deliberate into characteristic, composition, texture, shape & styles.

2.2.1 Composition & Characteristics

Although many people thought Shera looks like real wood but actually there are in

fact of many variances. Shera products are made from fiber cement, definition of the fiber

cement is a sort of composite raw material made of silica sand, mineral aggregates, Portland

cement, cellulose fiber that act as filter and reinforcement fibers and aluminum hydroxide

(Sheraeu, n.d.).

Figure 2.2.1.1: The list of chemical composition of Shera fiber cement

(Sheraeu, n.d.).

Figure 2.2.1.2: A piece of Shera board

Shera is type of Portland cement which most widely used manufactured material

that sold throughout Asia, Middle East, Africa and Europe in the world. Although the terms

Silica sand Aggregates Portland Cement Cellulose Fibre

Aluminum Hydroxide

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of cement and concrete are often used interchangeably, cement is actually a part of

concrete which is a binding agent in concrete and mortar. Shera was type of hydraulic fiber

cement which requires only the addition of water to activate (EPA , 2014) .

The properties of Shera are able to fire-resistant, water resistant, does not rot,

termite and insect resistant and does not shatter compare to timber which weak in fire-

resistant, easy to rot after expose to water, termite and insect invade but able to produce

fewer greenhouse gas emission and able to absorbs and store CO2 throughout its lifespan

unless it is rotten or burnt stated by (Goyal, n.d.).

2.2.2 Appearance

The Shera is an autoclaved non-asbestos fiber- cement flat sheet for cladding which

provides the outstanding alternative to substitute timber board. Shera can be custom in any

type of decorative patterns which can be shown in figure 2.2.2.1.

Figure 2.2.2.1: List of 5 different patterns of Shera board

(Source: )

Shera board is suitable for even Do-It-Yourself (DIY) segment. It comes in numerous

sizes and textures with a real remedy to wood-cladding houses which are severely affected

by termites and high humidity in Malaysia. There are also some different types of Shera

board that come with aesthetic look of 5 different attractive patterns including Rocco,

Stucco, Cassiano, Cassia and the latest call Blossom.

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2.2.3 Shapes & Styles

(ABS, n.d.) States that there are various types of fiber cement is manufactured to

mimic wooden siding. Home siding can be separated into three categories or types can be

shown in figure below. Siding is a long thin plank of wood or fiber cement board nailed

either horizontally or vertically on the house. Or, it also could be small shingles or shake that

are individually nailed onto the house.

Figure 2.2.3.1 Horizontal Siding Figures 2.2.3.2 Vertical Siding Figure 2.2.3.3 Shakes and Shingles

Horizontal Siding

Figure 2.2.3.4 Modern house with fiber cement siding on the left and Traditional house with wooden siding on the right.

Traditional siding is horizontal siding aka lap siding that runs across the house horizontally

from end to end. Horizontal siding was the favorite siding among traditional house same as

modern house which can be shown in figure below

Vertical Siding

Figure 2.2.3.5 Modern house with fiber cement siding on the left and Traditional house with wooden siding on the right.

Vertical siding aka barn siding is type of siding that runs up and down or vertically in

different widths compare to horizontal siding. It commonly used as an accent on garages

and gables. There are few example of horizontal siding between modern and traditional

house at below figure.

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Shake & Shingles

Figure 2.2.3.6 Modern house with fiber cement siding on the left and Traditional house with wooden siding that covered with moss on the right.

Shake siding is type of small shingles or shakes that look like Cedar are attacked. Vinyl shake

look like real wood but without the high maintenance and upkeep of wood. It will not rot,

never needs painting and termites resistant. Just wash it down once or twice a year with the

water and you will have that new charming look for a lifetime.

2.2.4 Building Component

Shera board is a fiber cement board that easily to be install and handle, reducing

installation time and increasing cost-savings. Hence, it is a perfect for any house that had

constant threat from termites, water damage and moisture resistant for Malaysia climate.

On the other side, timber unable to withstand the termites and weather unless been

laminated which can hold up for more years.

Figure 2.2.4.1: List of Shera which can come in various types of forms

Shera cladding comes in various forms but it is often seen in horizontal boards which

imitating the wooden clapboard and in a sheet form. It also can be imitation the shingles

and even more such as fence, eaves, vent board, baluster, roof shake and strip which some

can be shown in figure 2.2.4.1. It is easy to install by overlapping each other and labor work

is minimal. Shera cladding can be used to cover exterior of a house and can also be used as

substitute for timber fascia, soffit, and barge boards.

Shera eaves lace

Façade with Shera board Shera vent board

Shera eaves drop

The Indoor Environmental Quality and The Effectiveness of Adopting Shera instead using timber as Sustainable Building Material in Kampung Villa, Pulau Banding.

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2.3 The Environmental Issues

The Belum Rainforest Resort is one of Malaysia ecotourism holiday destinations to

experience mystery of the vast jungle has remained untouched for centuries. It also allows

nature lovers to have chance to observe the beauty of plants and scenery that can be found

rarely.

Figure 2.2.4.1: List of Shera which can come in various types of forms

(Source: Butler, 2013)

Sadly, Malaysia has reached the world’s highest deforestation rate which reveals by

the google forest map between 2000 and 2012 can be shown in figure above. This

deforestation threatens a number of endangered specials and the environment such as

global warming (Butler, 2013). The main reason of this act because the demand of the oil

palms plantations, logging and mining, tourist, and forest fires (Martin, n.d.). By reduce the

deforestation, we should use some local and recycled raw materials such as Shera fiber

cement instead of timber to achieve the sustainability and reduce the environmental

impact.

According to (Goyal, n.d.), he state that around 20 trees needed to build an timber

house frame, timber also able to store CO2 but it will cause global warming after

deforestation without replant and once it burn CO2 will give back to atmosphere unlike

Shera sheet is inactive and inert. By burning of 1kg of wood will generate 1.65-1.80kg of CO2.

Furthermore, building also contributes over 30% of total global CO2. A badly

designed building can also have a negative impact with incorrect material that should be

fully responsible for architects and property owners for selecting ecologically responsible

materials. The material should be utilized by few resources that produce less waste to

minimize negative impact on the environment.

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3.0 Indoor Environmental Quality (IEQ)

Indoor environmental quality (IEQ) refers to the quality of a building’s environment

in relation to the health who occupies space within. Hence, Indoor environmental quality as

our responsibility to the occupant, Shera began with the idea of creating a healthy building

material to help replace and reduce the use of natural wood, which is a scarce resource.

Because the awareness of indoor wood-based panel products grew, as a result of their

effect on occupant well-bring from the toxics emitted.

Figure 3.0.1: The systems that create from chemical substance in indoor spaces (Source: Yoshino Gypsum, 2014)

Pollutants emitted from indoor building materials have not been in the radar of the

building until the rise of the sick building syndrome (SBS). The SBS keep rises to the fore

which causes human have been made increasingly aware of the importance of indoor

environmental quality (IEQ) can be shown in figure 3.0.1. The dangers of using toxic material

indoors due to toxic emission from indoor environment which are adhesive, coatings,

sealant, paints and also composite wood, may contribute to indoor air pollution, causing the

building illness and users quality of life at risk (Enger & Smith, 2013).

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Figure 3.0.2: The systems that create from chemical substance in indoor spaces (Source: Yoshino, 2014)

This behavior had caught the attention of designer, owner and consumers to

integrate more stringent requirement under IAQ such as agreement levels or toxic

measurement method based on green building rating systems (Enger & Smith, 2013).

Hence, Architecture not only has a great effect on the immediate environment of the

building site but also on the quality of life of the occupants, by way of how the spaces are

designed and also the quality of indoor environment. Based on the figure 3.0.2, the

Architect also should aware of choosing the right material that is sustainable material that

provides healthy indoor air quality which comfort indoor spaces (Yoshino, 2014).

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Figure 3.0.2: The room temperate and amount of formaldehyde emission (Source: Yoshino, 2014)

Formaldehyde which was one of the major causes from Sick Building Syndrome,

mostly it came from the interior decorating of houses such as adhesives for flooring or

building material that emitted into the building (Yoshino, 2014). Furthermore, the structural

plywood plywood reinforcement and wood flooring are building material that emits the

formaldehyde that hard to the occupant. Meanwhile like the weather in Malaysia was quite

hot, it was quite danger to occupant. Because the higher the temperature is, the higher the

levels of formaldehyde is emit inside the building from the timber. On the other hand, Shera

fiber cement is a remedy that substitutes the timber to free the formaldehyde.

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Figure 3.0.3: Stop using the material that consist toxic that harm respiratory system (Source: Richard, 2014)

Shera has been developed responsibly taking into the account the environment and

building users. Since, many people have spent a majority of their time indoors so the indoor

air quality must be healthy. Shera is a non-asbestos fiber-cement board using

environmentally friendly raw materials without the added any volatile organic compounds

(VOC) and urea-formaldehyde adhesives which helping to contribute to a healthier indoor

environment throughout the product’s lifespan (Humfrey, 1996).

In terms of environmental sustainable, Shera is made from cellulose fiber

reinforcement and type of local raw material and acquired from sustainably harvested

sources. Most significantly, Shera containing more than 60% of recycle materials and using

recycling water, reclaiming waste stream, reusing the by-products and using renewable

energy for energy production (Sheraeu, n.d.).

As conclusion, the Shera has been installed in Traditional Chalets because it contributes to a

better indoor air quality for the client to stay since it does not generate toxics. It is more

efficient, durable and low maintenance. Shera also contributed to credits in global Green

rating systems in indoor environmental quality, environmentally preferable material, and

life cycle.

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4.0 The Application of Shera as Sustainable Building Material

At Belum Rainforest Resort there were six Kampung Villa are using Shera fiber

cement because of its excellent properties of impact strength and water resistance compare

to timber. Shera is easy to handle and install, reducing installation time and increasing cost-

saving. This advantage makes Shera board become the excellent choice for applications such

as wall cladding and roof in the Traditional Chalets as comparing to Traditional Malay house

(Lohchan, 2011).

4.1 Wall

Figure 4.1.1: The exterior and interior of Kampung Villa

Figure 4.1.2: The exterior and interior of Rumah Penghulu Abu Seman at Kuala Lumpur

(Source: Elaine, 2015)

From the figure above, Shera plank had been used as the exterior and interior

material of Kampung Villa due to perfect fiber cement siding which aesthetically same as the

real wood. Once painted, it is very difficult to tell the difference from even a short distance

(Calfinder, 2013) yet it is simple-to-install and much more durable siding material compare

to timber. By offering the look of masonry, stucco or wood at a lower cost, Shera aka fiber-

The Indoor Environmental Quality and The Effectiveness of Adopting Shera instead using timber as Sustainable Building Material in Kampung Villa, Pulau Banding.

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cement siding has become a popular siding choice for many house because of low

maintenance, non-flammable and termite-resistant compare to timber which reversible.

The average cost of fiber-cement siding is RM26-Rm52 per square foot and last for 25 to 50

years compare to the average cost of wooden siding is around RM22-RM44 per square foot

and can last from 10 to sometimes 100years if handle well (Matteucci , n.d.).

4.2 Roof

Figure 4.2.1: The roof on the left was Kampung Villa and the roof on the right was Rumah Penghulu Abu Seman

at Kuala Lumpur (Source: Elaine, 2015)

The roof allows us to add value to house and communicate the house look and feel.

When choosing roofing materials are always important such as the weather in Pulau

banding. The weather was extreme because of existence of lake which occur high humidity

and frequent rainfall. Eventually the roofing must be good in weather and water resistant.

Furthermore, Shera shake also available for the roof top inspired by the beauty of real wood

shake combined with the advance fiber cement composite technology. It is designed neatly

as a new alternative of Malay vernacular roofing tile because it delivers beauty and long

lasting performance without the costly maintenance by comparing to traditional wood.

(Shera, n.d.)

On the other side, we still can choose wood shingles and shake as roof top which

widely used in Malay vernacular house because of it local context but once fire it will burn

the whole building down. As the Belum Rainforest Resort owner, he will concern about the

safety of his client and the loss of his properties due to the burn. Hence, wood shingles can

be a concern in wet climate like Malaysia because it can cause the material turn into mold,

The Indoor Environmental Quality and The Effectiveness of Adopting Shera instead using timber as Sustainable Building Material in Kampung Villa, Pulau Banding.

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spilt or even rot. The only pros of wood shingles it offer rustic look and are a natural

product. According to (Matteucci,n.d.) the prices start at around RM435-RM653 per square

and might last for 25 to 30years.

As conclusion Shera can be used as sustainable building material in Traditional

Chalet, It was the better choice comparing to timber. Shera board is almost the same price

as wooden board which much more durable and even mimics the look of traditional wood

quiet well but is more complicated to install and should be done by a professional. On the

other hand, timber and Shera are able to insulate which provide pleasant thermal comfort

compare but wooden board can be easily affected by water, weather and insect damage.

Hence, wood is harder to maintain throughout the years and should be routinely inspected

for damage and refinished every five years or so (Calfinder, 2013)

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5.0 Effectiveness

Shera fiber cement is widely known material that had substitution products such as

various wood in worldwide not only in Southeast Asia. It had provided a lot of benefits such

as low maintenance, it had help the owner to save cost on handling the material like timber

that needed to take care for resistance. Furthermore

The composition of Shera fiber cement had managed to achieve in term of

sustainability which provide some benefits. There were few sustainable benefits of adopting

Shera into the Kampung Villa by compare to wood is reversibly which can be shown in below

figure 5.0.1.

Figure 5.0.1: The properties of Shera fiber cement

(Source: Sheraeu, n.d.)

Shera fiber cement is able to immune water damage towards the building instead of

using timber that might be easy to be rotten and brittle during expose long time of extreme

weather. Meanwhile the Shera is able to provide good thermal comfort for the occupants in

the building where the Malaysia climate was hot in day. Furthermore, Shera is very durable

than timber, where it had low shrinkage and termite resistance that had reduce the

maintenance cost and increase the life-span of the material.

The Indoor Environmental Quality and The Effectiveness of Adopting Shera instead using timber as Sustainable Building Material in Kampung Villa, Pulau Banding.

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The context of Kampung Villa was surrounded by forest and lake that had plenty of

termite & insect accompanied with high humidity level. On the other hand, the timber is

unable to resist the termite and the low shrinkage that might unpleasant feel among the

occupant. Hence, the owner might worry about the fire safety of the occupant that stays the

Kampung Villa. The adopting of Shera is able to provide fire resistance that allows the

occupant to evacuate but then the timber was weak in fire resistance which might injured or

kill the occupant in Kampung Villa during the fire outbreak.

Shera Board Performance Wooden Board

★★★ Fire Resistance ★

★★★ Weather Resistance ★

★★★ Rot Resistance ★

★★★ Water & Moisture Resistance ★

★★★ Termite & Insect Resistance ★

★★★ Flexible ★★

★★★ Sound Insulation ★★★

★★★ Durability ★★

★★ Workability ★★

★★★ Low Shrinkage & Non-Warping ★★★

★★ Easy to Paint ★★

★★★ Maintenance Free ★

★★★ Environmental Friendly ★

★★★ Non -Toxic ★★ Figure 5.0.2: The comparing performance between Shera fiber cement board and wooden board

(Source: Sheraeu, n.d.)

From the figure 5.0.2, it shows that the overall performance of adopting Shera fiber

cement is much more way effective than wooden board in terms of sustainability. The

owner wills much more favor to choose Shera board instead of timber because Shera

performance is excellent and it able to provide sustainability by compare to timber which is

much weaker.

The Indoor Environmental Quality and The Effectiveness of Adopting Shera instead using timber as Sustainable Building Material in Kampung Villa, Pulau Banding.

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6.0 Conclusion and Future Recommendations

As conclusion, Shera fiber cement is a sustainable building material that provides a lot of

benefit to the indoor environment quality and effectiveness that able to provide healthy life

to the occupant that adopt in Kampung Villa and environmental friendly. Hence, Shera is

non-asbestos that uses of acrylic colour. The Shera had reduced waste from construction

and promotes fast and clean construction system. Most importantly, Shera helps reduce

energy consumption which consists of non-toxic material and does not harm to the

environment. Shera is a sustainable building material that substitutes natural wood and also

helps reducing forest destruction. The Shera should not only adopt in Kampung Villa, it

should adopt in all contemporary architecture in Malaysia to achieve the sustainability.

(3556 words)

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7.0 References

1. Ahmad, M.H, Salleh, M.R., & Hong, L.F. (2006). Towards development of tropical

solar architecture: the use of solar chimney as stack induced ventilation strategy. University of Technology Malaysia Architecture Journal, 74217,9-42.

2. Butler, R. (2013, November 15). Malaysia has the world’s highest deforestation rate, reveals Google forest map. Retrieved November 14, 2015, from http://news.mongabay.com/2013/11/malaysia-has-the-worlds-highest-deforestation-rate-reveals-google-forest-map/

3. Calfinder, 1. (2013). Horizontal Siding Types. Retrieved November 11, 2015, from http://www.calfinder.com/library/siding/types-of-siding/horizontal

4. Chew, T. (2013, June 28). The Monsoon Seasons in Malaysia. Retrieved November 19, 2015, from http://www.expatgomalaysia.com/2013/06/28/the-monsoon-seasons-in-malaysia/

5. Elaine, 1. (2015, September 6). Visit to the penghulu house. Retrieved November 11, 2015, from http://tenderlovingcakes.blogspot.my/

6. Enger, E., & Smith, B. (2013). Air qualiy issues. In Environmental science: A study of

interrelationships. (13th ed., p. 364). Boston: McGraw-Hill.

7. EPA (2014, November 24). Overiview of portland cement and concrete. Retrieved November 11, 2015, from http://www3.epa.gov/epawaste/conserve/tools/cpg/pdf/app-a.pdf

8. Goyal, H. (n.d.). How much CO2 is stored in 1 Kg. of wood?, How much CO2 is produced by burning 1 Kg. of wood?, How much CO2 is stored in 1 Kg of Paper? Retrieved November 14, 2015, from http://www.paperonweb.com/A1110.htm

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The Indoor Environmental Quality and The Effectiveness of Adopting Shera instead using timber as Sustainable Building Material in Kampung Villa, Pulau Banding.

ARC 2238/ ARC 60403 Asian Architecture 23

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