`IntroductionTraditionally buildings are expected to meet the buildingcode requirements but the green buildings are expected to perform more byreducing their impact on the environment.

The design, construction, andmanagement of a green building project are different from those of atraditional construction project. When stakeholders are approaching building agreen house, more emphasis is given to the whole life-cycle of the building andits elements , consumption of less energy and water, and provision of betteruser satisfaction (Glavinich, 2008). This means that a greenhouse should aim atsatisfying client needs during operation by reducing cost of  energy and the building should operateefficiently and effectively during its existence. (Hwang and Tan,2012)recommended that professionals’ green building knowledge and experience shouldbe enhanced to keep them updated with the evolving information for successfulgreen building project delivery. Learning from experience on projects encourages people tolearn and to embed that learning into continuous improvement of projectmanagement practices (Kerzner, 2013). This means that in order to remain green,people should adopt new technologies which will help to enhance the aspects ofa green building.

Kerzner, H.R. (2013), Project Management: A Systems Approachto Planning, Scheduling, and Controlling, John Wiley & Sons.

 Glavinich,T.E. (2008), Contractor’s Guide to Green Building Construction: Management,Project Delivery, Documentation, and Risk Reduction, John Wiley and Sons,Hoboken, NJ.Hwang,B.-G. and Tan, J.S. (    2012),”Sustainable project management for green construction: challenges, impact andsolutions”, World Construction Conference – Global Challenges in ConstructionIndustry, Colombo, June 28-30, pp.

171-179.Definitions of a greenbuildingGreen building is a comprehensive approach to design thatenhances a building’s efficiency throughout its life cycle. Thebuilding structure is designed to consider building as a whole andexamine how its various subsystems function together to save energy and reduceenvironmental impact. Techniques such as using recyclable materials,collecting rain water for nondrinking uses, aligning buildings to takeadvantage of drainage and daylight, and using renewable energy sources are alldesign components and innovations that provide energy savings over astructure’s life cycle. (Dean August 2007: p 24-31) Green building is a new ecology of sustainable design, whichbrings comfortable physical surrounding to its occupants.

The purpose of greenbuilding in Taiwan is to build ecological, energy saving, waste reduction andhealth habitats for our living environment (Taiwan Architecture and buildingcenter, 2008).Taiwan Architecture & Building Center. (2008). TaiwanArchitecture Building Center. Retrieved March 31, 2008, fromhttp://www.

tabc.org.twDean, B.

(2007). Save green by building green. BankNews, 107(8), 24-24,31. Retrieved from https://search.proquest.com/docview/205934681?accountid=167317Thefounder of Leadership in Energy and Environmental Design (LEED), the UnitedStates Green Building Council, described green building as the “design andconstruction practices that significantly reduce or eliminate the negativeimpact of buildings on the environment and occupants in five broad areas: 1.sustainable site planning, 2.

safeguarding water and water efficiency, 3.energy efficiency and renewable energy, 4. conservation of materials andresources, and 8 5.

indoor environmental quality”Aroul, R. R. (2009). Going green – impact onresidential property values (Order No. 1467938).

Available fromProQuestCentral. (305175096). Retrieved from https://search.proquest.

com/docview/305175096?accountid=167317 Green building is a building that is deliberately designed tominimise impact on the environment and to maximise impact on the environmentand to maximise efficiency when using resources such as materials, water andenergy; and to maintain this efficiency over the lifecycle of the building.(McMullan: 2012, p,318). In practical this means a green building is designed inorder to reduce the negative impact of a building on the environment and guardagainst depletion of available natural resources over its life.McMullan, S(2012).

Environmental Science in          Building 7th Ed. UnitedKingdom: Palgrave Macmillan.As an essential component of sustainability green buildingseek to provide healthy environment in a resource efficient manner usingecological based principles. Ching (2008)Ching, F.D.

K (2008). Building Construction Illustrated 4thEd. Canada: John Willey and SonsGreen Buildings are buildings of any usage category thatsubscribe to the principle of a conscientious handling of natural resources.Bauen, M., Mosle, P and Schwarz,M (2007).

This meansreducing the negative environmental impact of a building as possible, reducingthe environmental hazard as possible by using materials that are environmentalfriendly, indoor solutions that facilitate communication, low energyrequirements, renewable energy use reducing the use of non-renewable energythat may extinct with increasing usage and also enhancing economical operation.Bauen,M., Mosle, P and Schwarz,M (2007) Green building-Guidebook for SustainableArchitecture.

Germany: Callwey Verlay, Munich.Green buildingpractices used on construction sitesIntroductionThe field of green technology encompasses a continuously evolving group ofmethods and materials, from techniques for generating energy to non-toxiccleaning products (Yusof, and Mydin, Jul-Sep 2014 p, 115-122.). The present expectation isthat this field will bring innovation and changes in daily life of similar magnitudeto the “information technology” explosion over the last two decades. In theseearly stages, it is impossible to predict what green technology may eventuallyencompass. (Yusof and Mydin, M. A. O.

Jul-Sep 2014 p, 115-122).  The goals that inform developments in this rapidlygrowing field include ?Sustainability – meeting the needs of society in ways that can continueindefinitely into the future without damaging or depleting natural resources.In short, meeting present needs without compromising the ability of futuregenerations to meet their own needs. ? „Cradle to cradle” design – ending the„cradle to grave” cycle of manufactured products, by creating products that canbe fully reclaimed or re-used. ? Source reduction – reducing waste andpollution by changing patterns of production and consumption. ? Innovation – developing alternatives totechnologies – whether fossil fuel or chemical intensive agriculture – thathave been demonstrated to damage health and the environment. ?Viability – creating a center of economic activity around technologies andproducts that benefit the environment, speeding their implementation andcreating new careers that truly protect the planet. Sustainable development isdevelopment that meets the needs of the present without compromising theability of future generations to meet their own needs this is a commondefinition of the sustainable that been use all wide world (Dennler 2007).

Inother word sustainability is the approach in which development that provide toensure the need of today generation but not forgetting the need of futuregeneration. The benefit of sustainability and green technologies is divided tothree components, which are environment, social and economic.Yusof, S. H.

, and Mydin, M. A. O. (2014). SOLAR INTEGRATEDENERGY SYSTEM FOR GREEN BUILDING.

 Acta Technica Corviniensis – Bulletinof Engineering, 7(3), 115-122. Retrieved from https://search.proquest.com/docview/1547946943?accountid=167317 Overviewof LEED and green building technologies Leadership in Energy and EnvironmentalDesign (LEED) is a rating system used to evaluate and accredit energy ef?ciencyand sustainable design features of new and renovated buildings (Hawke, 2010).It is established and reated by the US Green Building Council (USGBC), the LEEDrating systems are developed through an open, consensus-based process led bycommittees. TheLEED rating system recognizes performance in ?ve areas: -Sustainable site selection and development -Water ef?ciency-Energy and atmosphere -Materials and resources-And indoor environmental quality.Which I think this are the essentialelements of a green building which I think sustainable site selection anddevelopment will help to reduce use of energy and locate a building in theenvironment in which its operations will be enhanced by the natural environmentin which it is going to be constructed to reduce use of non-sustainable energysources.

A building which is water efficiency will minimise the use of water inour country as Botswana has a problem of water shortage. Energy and atmosphereI think it rat the building based on how to use energy in such a way that doesnot pollute the environment in which we live in. Based on materials andresources I think the main aim of LEED is to use construction materials whichare environmentally friendly which can be recycled after usage and theirdisposal are not going to pollute the environment. My perception based onindoor and environmental quality, I think it enhance the environment of theinterior of a building so that it reduce usage of electricity by controllingthe temperature of a building by using construction methods that regulate thetemperature of a building, like use of double walls and green roofs.Nevertheless, I will further go into details of the following ratings of LEEDto get what they mean by them. Sustainable site selection anddevelopmentGreen roofs are partially or completelycovered with vegetation and a growing medium and planted over a waterproo?ngmembrane.

Green roofs absorb rainwater, provide insulation, create a habitatfor wildlife, and help to reduce the air temperatures of a building bymitigating the heat island effect. They can also add to the aesthetic appeal ofthe building. Re?ective roofs use materials with high solar re?ective indexesto help reduce the building’s heat island effect. Both of these technologiesare normally used in residential projects but they can also be used incommercial buildings.

Storm water management is an important consideration forany building project and this can also help to conserve water in Botswana aswater is a scarce resource. Use of permeable pavement and grid pavers assistwith management of storm water runoff, particularly in parking lots. Raingardens, vegetated swales, and constructed wetlands reduce imperviousness andallow rainwater to reabsorb into the ground. Rainwater can also be collectedfor landscape irrigation, toilet and urinal ?ushing, and custodial uses. Thesefeatures can also be highlighted in education campaigns because they are easilyscalable and transferable to residential, commercial, and public properties.(Barnes, 2012) 1 Hawke, B. (2010), “Sustainablelibraries: report back on a study visit to public libraries in the USA, Canada& Australia”, The New Zealand Library & Information Management Journal,Vol.

52 No. 1, pp. 24-40.

 Water efficiencyThis reduce potable water use by considering alternativeon-site water sources, for example by using rainwater, storm water andgreywater for custodial uses and toilet and urinal ?ushing. These technologiescan be used both in residential and commercial buildings. 

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