Premium Essay

Disadvantages Of Green Roof

Submitted By
Words 1438
Pages 6
G. ROOT BARRIER.
This layer prevents plant roots from reaching and penetrating the waterproofing membrane or insulation if there are any. Plants with aggressive root barriers usually penetrate the membrane in search of moisture.
H. PROTECTION BOARD.
The protection board is used to prevent any damage to the membrane until all essential components are installed. According to Tolderlund (2010), membranes are usually made of durable materials that are water resistant and have a thickness of between 1/8 - ¼ inches.
I. WATERPROOFING MEMBRANE.
This is the most important member in the green roof as it prevents water from entering the building. According to G. Wark, (2003), “a green roof can be installed with any kind of waterproofing system, but single-ply …show more content…
As such, the waterproofing layer is typically assumed to be a membrane”.
___
_
TYPES OF GREEN ROOFS
There are two main types of green roofs; Intensive and Extensive.
I. INTENSIVE GREEN ROOF
According to Dinsdale et al (2006), Intensive roofs are usually more than 15 cm deep. This allow for the planting of larger plants like shrubs and even trees. This thickness of growing media, can be very heavy therefore, the structural integrity of the building which will carry this green roof will need to be considered first before this installation takes place or such consideration are made during the design stage of the building.
The intensive green roof requires a dedicated maintenance program including, watering schedule, irrigation and …show more content…
HIGH INSTALLATION COST: The installation cost is higher than that of the conventional roof.
II. HIGHER MAINTENANCE COST: Maintenance is also more demanding than in the conventional roof.
III. LIMITED THEORITICAL KNOWLEDGE: As seen in various studies, Public and private investors generally have little knowledge about Green roof, hence are careful not to delve into unknown “waters.”
IV. LIMITATION IN EXISTING ROOFS: Optimistic owners or clients who want to retrofit green roof installation in his/her buildings may be handicapped because the original structural designers did not consider green roof applications in their calculation. ___
_
7. RESEARCH DESIGN
STUDY LIMITATIONS
-The visit to all West African countries may be limiting as a result of visa issues.
-Data gathered from interviews maybe misleading since there a lot of political issues in the construction industry.
- The respondents of interviews will need to be contacted before any interview can take place because of busy schedules.
- The study identifies green roof adoption in construction at its time. It does not attempt to predict any changes in the

Similar Documents

Premium Essay

Negotiations

...| Budget MotelIntegrative Negotiation | | | | Winnie Wang Hotel Owner 2/2/2015 | | In this case, I negotiated with Ilyas Abayev, who was playing the role of a representative | | for Green Roof Inn. The negotiation started off rocky and unfortunately, never really | | recovered. I felt rather uncomfortable from the start and I think that affected our | | ability, or rather lack of, to come to a compromise. We could not reach a conclusion | | and because of the tension in our negotiation, it made it easier for me to walk away. I did | | not want to help him, especially if it meant some sacrifice on my part. | | | | We were unable to create any sort of value in this case. Although unknown at the time, | | our bargaining zones had zero overlap, but because as the hotel owner, I was looking | | for a place to live, but any Green Roof Inn property provides housing for its general | | managers. Had Ilyas and I been more open with our communication and developed | | some form of trust, we may have found common ground. Because I felt guarded and | | confused, I had a hard time finding things that would be mutually beneficial. Had the | | Green Roof Inn provided me and my spouse housing, then I would’ve been more willing | | to take a lower offer because I would not have as many expenses. | | | | Ilyas started off very “relaxed” about everything, even before the negotiation started. He | | asked for some time to review...

Words: 1515 - Pages: 7

Premium Essay

Tropical Architecture

...Research Proposal in Technical Writing Tropical Design: An Eco-Friendly and Energy Saving Design for Residential Structure Submitted By: Gutierrez, Shiella Mae DL. Submitted To: Mr. Jesus Escuro 1st Semester 2011 Introduction Background of the Study “Do not fight forces, use them.” - (R. Buckmister Fuller) Tropical design is an environmentally conscious design technique in the field of architecture or simply described as designing with nature. This design minimizes the environmental impact of the building by enhancing efficiency and controls the use of materials, energy, and development space. There is an attempt to preserve air, water, and earth by choosing economically friendly building materials. Tropical design could contribute to the environment through its sustainable properties which minimizes too much use of electricity by using the natural energy as alternative. This research is conducted because it is a proof that both man and his natural environment can live in perfect harmony. The tropical conditions in the Philippines affect the high temperature, and low air flow which affect on the comfortable indoor environment. With this design approach, it can contribute to a sustainable lifestyle and culture. Tropical architecture can be a solution in preventing global warming because of its eco-friendly materials used in construction and the design itself. This design is important especially for those who are living in the tropics like the Philippines...

Words: 6149 - Pages: 25

Free Essay

Future Job

...THE COUNTRY AND CITY LIFE If you have two choices: living in the countryside or living in the city, which one will you choose? Life in the city or life in the countryside has its own advantages and disadvantages. Some people think that living in the countryside is better, but some don’t think so, they say that life in the city is more convenient. There are lots of differences between them. First is about the environment. Life in the countryside is quiet and peaceful. The air is fresh because there are a lot of green trees and it has few factories. There are large paddy fields grow rice and green vegetables. There’s only a little traffic, so there’re fewer accidents. In the countryside, the market is small, it has fewer shops than the city. You’ll have to walk a long way to buy some things you need. But in the city, it’s always noisy and bustling. There’re many high buildings, museum, stadium, supermarket… The air is now polluted by the smoke from the means of transport, chemical factories and other things. The roads are always busy so there’re many accidents every week. The big markets are a lot. It also has many supermarkets that can give you a wide variety of selections. Every thing is under one roof. You can buy anything you want without noticing about the weather. Second, the people in the countryside are very friendly. We can easily know all the people in our neighborhood and make friends. When you get in trouble, they are willing to help you. They always solidarity...

Words: 454 - Pages: 2

Premium Essay

Green Building

...Green Building Makes a Change Being sustainable has become a main concern all over the world. Although Hong Kong has ranked Asia’s second-most sustainable cities, it performed poorly in environmental factors. Hong Kong’s serious air pollution, high greenhouse gas emissions, poor solid waste management and the low proportion of renewable energy sources contributed to its low ranking in planet sub-ranking. This alerts Hong Kong should really take action to improve the environmental problems. And green building will be the most suitable solution. According to The Environmental Protection Agency (EPA), it defines green building as a sustainable or high performance building. It is environmentally responsible and resource-efficient throughout a building’s life-cycle from design, construction to operation. Basically, reduce energy and water use, healthy indoor environmental quality, smart material selection and the buildings effects on its site are the key consideration of green building. Green building can achieve efficient use of energy which most of the present buildings in Hong Kong cannot. In Hong Kong, the greenhouse emissions are surprisingly high for a city that has well-developed public transport system, “Buildings could be a big source of such emissions, “Graham Kean, Asia-Pacific head of client solutions at Arcadis said. In order to improve the current situation, we can focus on the design of the new green building to achieve efficient energy consumption. The introduction...

Words: 681 - Pages: 3

Premium Essay

Teacher

...The green revolution brought chemical agriculture to India. What problems accompanied this? 4. What is the main pesticide used in the United States and what type of pesticide is it? 5. What is potable water? 6. What happened when Bolivia privatized the water systems in 1999? 7. How long do some people in South Africa go without clean water? 8. In India how have they made drinking water affordable? How much does getting water this way cost? 9. How big is the global industry of water? 10. Is bottled water safer than tap water? 11. Dams provide a valuable source of hydroelectricity. If you had to choose between keeping dams for clean electricity or getting rid of them for sustained water flow which would you choose and why? 12. How was a forest and farms created in the desert? 13. How much does Nestle pay to extract water from the streams? 14. Will this affect how often you buy bottled water? 15. What are they petitioning the UN for? 16. Name 1 alternative to supply water to small villages. 17. What are the benefits and disadvantages of privatizing water treatment facilities? Do you think that privatization will improve water treatments? 18. Do you think it is fair to charge people for clean water? Why or why not? Answers 1. How many people a year die from water-born diseases? (2 million) 2. How much of the Earth is covered in water? (70 %) 3. The green revolution...

Words: 563 - Pages: 3

Premium Essay

Business

...widely Fig. 13-2a, p. 301 Fig. 13-2b, p. 301 Fig. 13-2c, p. 301 Fig. 13-2d, p. 301 Energy resources with low or negative net energy need help to compete in the marketplace •  Any energy resource with a low or negative net energy ratio cannot compete in the open marketplace with other energy alternatives with higher net energy ratios unless it receives financial support from the government (taxpayers) or other outside sources of funding. –  For example, the low net energy yield for the nuclear power fuel cycle is one reason why many governments throughout the world must heavily support nuclear power financially to make it available to consumers at an affordable price. Section 13-2 WHAT ARE THE ADVANTAGES AND DISADVANTAGES OF FOSSIL FUELS? Fossil fuels supply most of our commercial energy •  The direct input of solar energy produces several other forms of renewable energy resources that: wind, flowing water, and biomass. •  Most commercial energy comes from extracting and burning nonrenewable energy resources obtained from the earth’s crust. –  87% from carbon-containing fossil fuels (oil, natural gas, and coal). –  6% from nuclear power. –  8% from...

Words: 7315 - Pages: 30

Premium Essay

Steel

...Light steel construction and modular homes as alternative building methods in South Africa. By: Dewald Barnard 26144362 Submitted in fulfilment of part of the requirements for the degree of B.Sc(Hons)(Construction Management) In the faculty of Engineering, Built Environment and information technology University of Pretoria 1. Chapter 1......................................................................................................................................... 7 1.1Research Proposal.......................................................................................................................... 7 1.2. Problem ........................................................................................................................................ 7 1.2.1 Chapter 2................................................................................................................................ 7 1.2.2 Chapter 3................................................................................................................................ 7 1.2.3 Chapter 4................................................................................................................................ 8 1.2.4 Chapter 5................................................................................................................................ 8 1.3. Research methodology ..........................................................................................................

Words: 10715 - Pages: 43

Free Essay

Wood vs High Density Polyethylene

...Wood VS. High density polyethylene (HDPE) Plastic Lumber. This paper is not to persuade the use of either Conventional, or “Green” building materials it is simply a comparison of the pros and cons of your design choices. Wood has been a standard building material for centuries. Craftsmen, suppliers and manufacturers always want to see more wood used in materials and goods. The high market value of a real wood floors, furniture, accents and finishes will always be a selling point in any big purchase. There is something wood; unlike other materials, brings that warm, rich inviting look no matter the application it has been implicated in. Even with the pride of ownership and demand for high price; Wood is also the highly coveted material of choice in the cooking profession when it comes to choosing utensils. Wood of course is an essential material in manufacturing instruments, wither it be jamming on a guitar or playing a musical-toon on an oboe. Also let us not forget all those number 2 pencils destroyed during ones educational career. Even with all these wonderful applications for wood just mentioned in this paragraph and the many more items wood can and still is used for; still cannot help it over-come its true fate in nature. Wood deteriorates. It cracks, it rots, its splinters, it is prone to mildew and mold, the list goes on. Of course one would argue that not all of these negative aspects of wood pertain to all of said items, sure it depends on where, what and...

Words: 1107 - Pages: 5

Premium Essay

Effects of Banking on Alternative Construction

...Banking regulations limit lending for specific modes of affordable and green housing. A. Trent Richens (000331538) English Composition I (TBP1) Task 3 – Cause and Effect Essay 11/2/13 Western Governors University Banking regulations limit lending for specific modes of affordable and green housing. Banking regulations limit lending to specific types of housing, these regulations limit the ability to construct affordable and, greener types of construction, causing negative effects on the free market. An acceptable level of comfort in for life requires a small number of necessities: housing, sanitary facilities, education, employment, and food and water. Without these, life becomes miserable in a very short amount of time. For a vast amount of people around the world, home ownership is a dream, an ambition for life, that thing we’ve wanted since being a child. The security of having something that you can call your own and do what you want with, when you want with it appeals to most people. For many this dream will never become a reality, and for many others even once having it doesn’t mean they can keep it. The problem is todays housing is just not affordable. With all of the other demands that expense a person’s income it’s difficult to make this dream a reality. Financial policy drives the lack of affordable housing. Due primarily to the types of construction that can are fundable through the current financial system of lending the options are limited to less...

Words: 2139 - Pages: 9

Premium Essay

Pittsburgh's Hue Football Research Paper

...Inside zone runs are part of Haley’s playbook, but where Bell and the Steelers’ ground game has found most of its success has been executing on man blocks (counter and power) runs that fit the style of Bell’s patience and vision. As an extension of the running game to negate Cincinnati’s pass rush, look for Haley to use empty spread sets, utilizing Bell’s tremendous receiving skills, lining him up in the slot and out on the perimeter to draw mismatches, while using WR screens to Antonio Brown, Markus Wheaton and Martavis Bryant – mixed in with Bell working out of the backfield as a pass catcher for Haley’s prime threats to make plays in space. That doesn’t leave out the vertical stretching concepts with Brown and Bryant able to blow the roof top off of a secondary, and with Ben Roethlisberger (knee) back under center this week, Pittsburgh’s offense is once again a juggernaut. Cincinnati’s defense has improved from a year ago, particularly on getting after the quarterback. DC Paul Guenther has a healthy Geno Atkins penetrating on the interior that’s freed up Carlos Dunlap on the outside. Mike linebaker, Ray Maualuga will likely spy Bell, but for Guenther’s unit to contain Pittsburgh’s ground game, the interior of Cincinnati’s line needs to be a force to clog Bell’s lanes to limit him from getting to the second levels. Once Bell gets in the open, he’ll be able to run circles around Cincinnati’s suspect linebackers that’ve been the weak link of Guenther’s defense. Roethlisberger...

Words: 1197 - Pages: 5

Premium Essay

Pizza Hut

...Marketing Assignment Mission statement: “To be the best pizza for every occasion.” We are P.E.A.R.L.S: Passion for excellence Execute with positive energy and need Accountable for growth in customer and satisfaction Recognize the achievement for others and have fun doing it Listen and more importantly respond to the voice of the customer Marketing strategy: The marketing strategy for pizza hut is very simple: “We want to satisfy our customers by offering them the best”. They have used the word CHAMPS to describe their marketing strategy, which means cleanliness, hospitality, accuracy, maintenance, product quality and speed. They have gone further by using two F’s which stand for friendly and familiar. For pizza hut customer service means providing customers with uncompromising product quality, offering them with the highest value for money and giving them service that is warm friendly and personal. Pizza hut aspires to give its customers “customer mania”- the kind of service that ensures that every visit of the customer is a memorable one. Marketing mix: Since an international fast food chain like pizza hut demands both quality product and a high quality service and environment, its marketing mix comprises of all the seven P’s namely the product, price, promotion, place, people physical evidence and process. Product: Pizza hut offers a large variety of...

Words: 3342 - Pages: 14

Premium Essay

Understanding the Concepts

...Understanding the Concepts William Gould Finance 100 Dr. Crawford March 7, 2013 Strayer University, Augusta Campus Owning and operating your own business is a goal of most Americans. The thing about owning your own business is to understand the concepts of operating a small business. When thinking about starting a small business, a person must have a well written business plan. A business plan is an “a formal document that describes a business concept, outlines core business objectives, and details strategies and timelines for achieving those objectives” (Kelly & McGowan, 2012).A business plan consist of marketing: products and services offered, demand from customs, market and location, advertising and marketing plan and pricing strategy, Financial Management: amount needed to start, expected cash flow, projected income and balance sheet, etc...Operation: daily management, hiring and personnel policies, insurance coverage and leasing agreement (Gordick, 2003). Within a small business, a small business owner must be able to keep track of the money that is coming in and going out. Using the different financial source and equation to operate your business is essential in owning and operating a small business. Understanding the concepts will help you own, operates and sustain a small business. NPV and payback is a concept a small business owner must understand, when making decision in a small business. NPV or net present value method is a dynamic investment appraisal...

Words: 1879 - Pages: 8

Premium Essay

Stormwater Mitigation

...rainfall and the inability of the storm drains to handle the amount of rainfall. After a heavy rainfall, hillsides comes tumbling down across roads. News reports from all across the country show how flooding occurs, washing away roads, trees and houses. This is a major problem country-wide causing millions of dollars of damage every year. How can this be prevented? There are many ideas to alleviate the problem of such flooding such as using rain gardens, grassy swales, and permeable pavement. A rain garden is a planted depression that allows rainwater runoff from impervious urban areas like roofs, driveways, walkways, and compacted lawn areas allowing the storm water runoff to soak into the ground instead of flowing into storm drains. Rain gardens decrease the amount of pollution entering into creeks and streams by 30 percent. Rain gardens are usually located near a drainage pipe or a roof. The benefits of rain gardens are improving the quality of runoff water, provide flood control, encourage wildlife and biodiversity, ties developments and environments together, and are pleasing to the eye. In 1990, Dick Brinker, a developer building a new housing subdivision in Prince George County, Maryland, created the idea to create rain gardens instead of the traditional best management practices (BMP) pond. Brinker contacted Larry Coffman, the county’s Associate Director for Programs and Planning, Department of Environmental Resources with the idea of using rain gardens. Each property...

Words: 1299 - Pages: 6

Free Essay

Zhouzhuang Wyndham Hotel Sustainability Project

...of a common household. Compared to the population mean, our target hotel consumed about 130.34kwh/m2, which is a comparatively large consumption. The reason why we disregard other resources consumption, like water consumption, is that this hotel has installed facilities as their infrastructures for water use efficiency. The reason why the ballroom (which is mainly for accepting customers, holding banquets and arranging meeting and other versatile functions) is our target objective is that the ballroom has a high utilization rate compared with such like bedrooms and entertainment areas etc. Another reason is that the ballroom takes up the largest space among the single area in the hotel and the solar panels are going to be installed on the roof of the ballroom. As the electricity consumption varies from season to season in that during summers and winters, the peaks of consumption will occur, especially in the summer because the AC systems, including all refrigerating facilities, keep working for 24 hours. Meanwhile, considering different alternatives that may be used as the energy resource for the hotel, solar panels are suggested after these factors have been taken into consideration that the high utilization rate of the solar panel, no transportation fees for resources supply, low installation cost and last but not the lease, the efficiency and durability of both facilities and energy. These panels...

Words: 4597 - Pages: 19

Free Essay

Cfd to Monitor Air Quality

...Spring 2011, Purdue University Calumet, Hammond, IN 46323, USA Using CFD to Study Air Quality in Urban Microenvironments Varun Khare Purdue University Calumet Hammond, IN, USA | Abstract The project is concentrated on the study of the plume height coming out of buildings, such as restaurants and cooling towers around the office buildings, in an urban microenvironment, along with the placement of air intakes and exhausts on buildings which can significantly affect the overall indoor air quality. Earlier studies on the effects of building air intakes have been limited to relatively simple situations, unable to treat the complex envelope of most buildings and building groups. Computational Fluid Dynamics (CFD) is a tool that assists in modeling the airflow and dispersion of pollutants among complex urban geometries on the scale of a section of a building’s exterior up to several city blocks. This tool allows more accurate predictions of impacts over a range of meteorological scenarios and alternative building designs and placements relative to roadways and other pollutant sources. The steps in a CFD application are presented including geometry and mesh creation, simulation of meteorological conditions, handling of pollutant sources, and post-processing visualization. INTRODUCTION Design and placement of a building’s outside air intake is a very important building...

Words: 6753 - Pages: 28