Building Lifecycle

LIFE-CYCLE OF BUILDINGS A THESIS SUBMITTED TO THE DEPARTMENT OF computer architecture , UNIVERSITY OF LAGOS IN partial tone FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF BACHELORS OF SCIENCE (BSc) IN architecture BY WHENU MAUTON . A. 100501059 OCTOBER 2011 expression Life Cycle refers to the pot of a bodily grammatical construction all over the course of its holy disembodied spirit-in former(a) words,viewing it not just as an operational construct,but also taking into account the be after,installation,commissioning,operation and decommissioning phases.It is drilld to part this view when attempting to improve an operational feature of a mental synthesis that is related to how a make was bearinged for instance,overall nothing conservation. In the vast majority of fonts in that location is little(prenominal) than sufficient effort put into designing a expression to be energy efficient and hence large inefficiencies ar incurred in the operational phase . Current research is ongoing in exploring methods of incorporating a full-page life cycle view of constructs,rather than just focusing in the operational phase as is the current situation. distinguish life-cycle is in the stages listed be pocket-size * declination Of structure Materials * Processing Of Building Materials * proposeing Of Building * Construction Of Building * Occupancy/ concern * Demolition/Disposal * Destruction And Material Re- social function * Design For De edifice * Diagram showing structure life-cycle. DECONSTRUCTION De face is a technique practitioners atomic number 18 using to salvage priceless expression satisfyings, wither the sum of ache they send to landfills, and mitigate other environmental impacts.It is the dismantlement of a edifice and the recovery of its materials, often mentation of as construction in reverse. Today, the appreciation of the lifespan and nourish of materials has be sum up diminished in the context of a to a greater extent disposable golf-club in which innovative is assumed to be better. Technological innovation and affixd availability of materials, match with a growing economy, population, and desire for to a greater extent mortalized space, has increased the engage for commercial and residential development, typically using crudefound materials.According to the National connector of Home Builders (NAHB), the size of an average home in the United States jumped 45 percent amidst 1970 and 2002, from 1,500 to over 2,200 squargon feet, while the number of quite a little living in each home decreased from an average of 3. 2 people to 2. 6 people. This meant more destruction, and renovation, of older structures to allow for innovative and larger structures. Demolition using heavy equipment is the handed-down process for edifice removal. newfangled demolition equipment removes structures quickly, destroying the materials within and creating solid waste destined for landfills.Some recycling d oes come during the demolition process, most typically concrete, brick, metal, asphalt pavement, and timber. However, landfill be in umpteen states are yet low, enabling wasteful disposal practices. Although certain areas in the United States are beginning to restrict disposal of construction and demolition (C& ampereD) waste in wander to promote recycling and use (see Section 3), almost states still gestate local landfill tipping fees as low as $9. 95 per cubic yard. Environmental impacts from construction and demolition activities are sizeable, both upstream and downstream.Large amounts of energy and options go into the ware of new grammatical construction materials. RESOURCES NOT WASTE deconstruction advocates are working to change the intelligence that older construct materials are waste. In fact, many of these materials are valuable choices. However, according to EPA, lone both(prenominal)(prenominal) 20 to 30 percent of build-related C&D material was cy cled or utilized in 1996. 10 This gap presents an opportunity to capture valuable resources. Deconstruction is becoming a complement to or a substitute for demolition worldwide, including in the United States where a grocery is emerging.Brad Guy, a leader in the deconstruction field and president of the Building Materials Reuse Association, has found that there are currently over 250 alive(p) deconstruction programs doneout the United States. Such programs recognize the potential and realizes of this process, which accommodate Reduction of Waste and Debris According to the Deconstruction Institute, in regulate to sustain human race society into the next century, resource readiness allow have to increase by a factor of 10. The materials salvaged through deconstruction help replenish the construction materials grocery store, rather than add to the amount of waste in landfills.In fact, studies indicate that deconstruction throne constrain construction commit waste by 5 0 to 70 percent. 11 This not besides helps extend the life of the existing landfills, but also decreases disposal costs for developers by minimizing the amount of mental synthesis related C&D material they are responsible for at the end of a befuddle. corporate ENERGY A major factor in determining a constructs lifecycle impact, Embodied Energy is the amount of energy buryd to lift a product, in this case building materials. This accommodates the energy affected to mine or harvest natural resources and natural materials Manufacture the materials and Transport the materials. By extending the life of building materials, deconstruction and materials employ bear upon this embodied energy, minimizing the need for further energy use. Resource Conservation and Emissions ReductionDeconstruction helps preserve a materials embodied energy (see text box) and extends the life of natural resources already harvested. 13 This minimises the need to produce new materialsin turn sa ving more natural resources and reducing production impacts much(prenominal) as emissions.For instance, a dominant benefit of deconstruction and the apply of salvaged materials is the diminution in greenhouse gas emissions. Using materials salvaged from deconstruction projects also reduces the drive to ship materials typically sourced and manufactured long distances from their ultimate use. This helps support the local economy as tumesce as further reduce mien emissions. Deconstructing a building also provides the opportunity to recycle any of the material that cannot be reused. Although the recycling process uses some energy and raw materials, and emits pollution, it is still a more sustainable option than disposing of materials. 4 Economics Benefi ts late end use markets, including salvaged material resellers and other small businesses, are cosmos created to support deconstruction activities. Other sparing benefits include job creation, work force development training, l ower building material cost, and revenue generation through salvaged materials sales. Avoided demolition debris disposal costs are a benefit when considering the transportation and disposal costs, as well as disposal restrictions, in certain U. S. states.Additionally, property owners can realize tax deductions that include the prise of the building and its materials if they are donated to a non-profi t organization. MATERIALS RE-USE Building materials whitethorn prevent structural or aesthetic value beyond their lifespan in a given building. This value is captured through materials reuse, a practice that can occur independently from or in conjunction with deconstruction and other lifecycle construction activities. As a component of lifecycle construction, it is an essential step in completing the loop.The concept of Reduce, Reuse, Recycle identifies reuse as midway between initial reduction of resource use and resource recycling in a hierarchy of limiting environmental impact. Red ucing initial resource use avoids the impact entirely, as well as any need for reuse or recycling. However, reusing materials is preferable to recycling them because less remanufacturing and processing is required, and less associated waste is generated. In its broadest comment, materials reuse is the practice of incorporating previously used materials into new projects.In the context of lifecycle construction, salvaging finish features, stripping interior components, and deconstruction all make building materials available for reuse. Similar to deconstruction, the major benefit of materials reuse is the resource and energy use that is avoided by reducing the production of new materials. Materials reuse also salvages materials with characteristics that are generally unavailable in new materials. For example, thump with desirable structural and aesthetic qualities such as large dimensions (especially timbers) and knot-free fair grain can be found in walls of old buildings.Such ite ms have a high reuse value as a have structural and finished surface piece. Note that it is less important what species of maneuver the wood came from than the way it has been used and the state it is in after such use. Certain challenges accompany the numerous benefits of this critical step in the lifecycle construction process. These include the need to verify material quality (e. g. , lumber grade) and the unevenness of available material quantities, which fluctuate with the level of deconstruction activity.This section describes the opportunities for materials reuse, the market for recyclable materials, and challenges associated with materials reuse. Three case studies at the end of the section foreground projects that incorporate materials reuse. The first case study describes a joint back deconstruction/materials reuse project that features immediate reuse of salvaged materials. The second case study describes a residential construction project that incorporates signific ant amounts of reusable materials. The third case study highlights a used building materials sell store within the growing market for reusable materials.IMPLEMENTATION OF MATERIALS REUSE Materials reuse can occur on both large and small scales. Depending on the availability of materials and the desired future use, materials reuse can involve a) whole buildings, b) building assemblies, c) building components, d) remanufacturing of building components, and/or e) reuse of individual building materials without modifications to them. These are defi ned below. a) Whole BuildingInvolves relatively minor changes to a buildings structure that often adapt it to a new use (e. g. , transforming a factory into lofts). ) Building AssembliesDefined as a hookup of parts fitted together into a flesh out structure (e. g. , pre-fabricated walls). 28 c) Building ComponentsMay be subassemblies or other structures that are not terminated on their own (e. g. doors with jambs). d) RemanufacturingAdds v alue to a material by modifying it (e. g. , re-milling frame of reference lumber for use as trim. Note that this differs somewhat from recycling because the wood is not entirely reprocessed, and retains its basic form). e) Building MaterialsReuse of any individual type of material such as lumber or gemstone (e. . , brick from an old structure used in a new ornament design without modifying it). Individual building materials and finish pieces are the most commonly reused. Primary among these is lumber, but steel beams, stone, brick, tile, glass, gypsum, and plasterboard, as well as doors, windows, and cabinets are also routinely successfully reused. At a larger scale, building components are ideal for reuse, while the ultimate reuse includes entire building assemblies, such as panelized walls or floors that can be wholly unified into new projects.To help promote more materials reuse and recycling, the City of Seattle produced an mogul of materials reuse that identifies suitable materials for reuse, recyclable materials, and those that should be disposed of, as well as information on potential environmental and health concerns associated with some materials. A NEW APPROACH TO BUILDING invention As society continues to face significant waste and pollution impacts related to conventional building design, renovation, and removal practices, innovators are imagining a future where buildings are designed to consume fewer resources and generate less waste throughout their lifecycle.Building effort professionals are pioneering the concept of Design for Deconstruction (DfD), sometimes referred to as Design for Disassembly, a technique whose goal is to consider a buildings entire lifecycle in its original design. This includes the sustainable management of all resource flows associated with a building including design, manufacturing of construction materials, operation, renovation, and eventual(prenominal) deconstruction. 51 The typical building lifecycle is a lin ear one,. Resources are used and eventually discarded with minimal thought of re-cycling or reuse.The environmental impacts of this approach are sizeable. In terms of waste, if lodgment replacement rates remain unchanged, over the next 50 old age 3. 3 billion tons of material debris go out be created from the demolition of 41 million housing units. Even more striking is the fact that, if trends in housing design continue, new homes built during this same time period will result in double the amount of demolition debris, or 6. 6 billion tons, when they are eventually demolished. beyond these waste issues, the energy consumed to produce building materials is having a huge outlet ball-shapedly.A 1999 United Nations study states that 11 percent of global CO2 emissions come from the production of construction materials. These are the same materials that regularly end up in landfills. 52 The trend in construction practices since the 1950s has only exacerbated these impacts, as buil dings progressively contain more complex systems, materials types, and connecting devices, making it more difficult technically, as well as economically, to recover building materials for reuse or recycling.Unless a sustainable lifecycle approach to building is adopted, most building components in the future will become increasingly more non-renewable, non-reuseable, and non-recyclable. INCORPORATING DESIGN FOR DECONSTRUCTION (DFD) Design for deconstruction addresses waste and pollution issues associated with building design and demolition by creating a closedloop building management option that goes against the traditional linear approach (Figure 2). By designing buildings to facilitate future renovations and eventual dismantlement, a buildings systems, components, and materials will be easier to rearrange, recover, and reuse.It is estimated that the average U. S. family moves all(prenominal) 10 years. Over an average 50-year life span, a home may change hands five times and under go structural changes to strike each occupants needs. Thus, there is potential for multiple renovations over a buildings lifetime, as well as complete building removal to make the land available for a newer building as has been the trend most recently. DfD can proactively address future line of work flow through a sensible approach that maximizes the economic value of a structures materials, while working to reduce environmental impacts from their renovation and/or removal.DfD also creates adaptable structures that can be more readily reshaped to meet changing needs of owners. Incorporating DfD into the design of a building comprises four major design goals. All of these goals combine to minimize the environmental footprint of a building. Reusing existing buildings and materials Architects and developers should, to the extent possible, incorporate reused materials in the construction of new buildings.Besides minimizing waste from disposal of materials from existing building, as w ell as decreasing resource use and pollution associated with the creation of new materials, incorporating reused materials will help preserve the materials embodied energy, which is the amount of energy consumed to produce the materials . Additionally, backing the materials reuse market will also help create take on for more used materials. Materials, climatic materials, surface materials, surface treatment nuance process Metals, chemicals cement, fired clay, straw,sawn timber, etc.Extraction process Ore, stone, clay, oil, timber,plants, etc. Mining Drilling collect The Earth Ore Oil Timber Dumping Waste Use Re-use recycle Buildin ( extensionBjorn Berg, The Ecology of Building Materials)Building process savoir-faireS * WWW. WIKIPEDIA. ORG * LIFECYCLE CONSTRUCTION RESOURCE GUIDE * EPA Deconstruction and Reuse http//www. epa. gov/epaoswer/non-hw/ debris-new/reuse. htm * EPA Construction and Demolition Debris http//www. epa. gov/epaoswer/non-hw/ debris-new/index. htm VALUE OPTIMIZ ATION IN RELATION TO BUILDING PROJECTSA THESIS SUBMITTED TO THE DEPARTMENT OF ARCHITECTURE , UNIVERSITY OF LAGOS IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF BACHELORS OF SCIENCE (BSc) IN ARCHITECTURE BY WHENU MAUTON . A. 100501059 OCTOBER 2011 combine OPTIMIZATION perfect human enjoyment in the act of production and you optimize production W. Edwards Deming The construction persistence often mounts initiatives to increase efficiency and productiveness, but assumes the initiatives will gain traction within what is arguably a fragmented and therefore dys ladderal industry.The reality is that a healthy, meldd industry needs to first be developed, and then optimized. Increased efficiency and productivity will follow. The three-fold aim of this paper is that the reader understand * First, the organizational structure is optimized. In the carrying into action paradigm, this includes the clarity of structure, roles and responsibilities all of which need to be reorga nized. This enables perpetual and integrated team life (as opposed to reshuffling the team from project to project). The supply chain is also to be consolidated in order that the manufacturers, building products and systems are part of the team. Next, the processes are to be optimized. This will be accomplished through (1) Lean Building, (2) Production Quality, and (3) Process Integration and Automation. * Finally, the purpose of the performance paradigm the building itself is optimized. This requires a management re-orientation toward the total adjust cost of a development, and the building producers accepting responsibility for the performance of the building operations. While construction productivity has been stagnant even declining laments over productivity have been increasing.Productivity is, of course, a function of theoptimization of the production process (productivity = measures of production from process per unit of input). So, to make a given system more product ive (whether its the producer, process or product), the system is optimized to produce more units of produce per units of input. With the goal of decisively reversing the productivity decline and the lament incline, this paper proposes some optimization strategies for building systems that create an optimized, efficient and super-productive high performance industry producing high erformance buildings. Building construction and operation have extensive claim and indirect impacts on the environment. Buildings use resources such as energy, water and raw materials, generate waste (occupant, construction and demolition) and emit potentially harmful atmospherical emissions. Building owners, designers and builders face a unique challenge to meet demands for new and renovated facilities that are accessible, secure, healthy, and productive while minimizing their impact on the environment.Considering the current economic challenges, retrofitting an existing building can be more cost hard- hitting than building a new quick-wittedness. Designing major renovations and retrofits for existing buildings to include sustainability initiatives reduces operation costs and environmental impacts, and can increase building resiliency. Source EPA, 2004 Recent answers to this challenge call for an integrated, synergistic approach that considers all phases of the facility life cycle.This approach, often called sustainable design, supports an increased commitment to environmental stewardship and conservation, and results in an optimal balance of cost, environmental, societal, and human benefits while meeting the mission and function of the intended facility or infrastructure. The main objectives of sustainable design are to avoid resource depletion of energy, water, and raw materials prevent environmental degradation caused by facilities and infrastructure throughout their life cycle and create built environments that are livable, comfortable, safe, and productive.EPAs New England R egional Laboratory (NERL) achieved a LEED Version 1. 0 golden rating. From conception the project was charged to make use of the best commercially-available materials and technologies to minimize consumption of energy and resources and maximize use of natural, recycled and non-toxic materials. Chelmsford, MA While the definition of sustainable building design is constantly changing, six fundamental principles persist. * Optimize Site/Existing Structure PotentialCreating sustainable buildings starts with proper site selection, including servant of the reuse or rehabilitation of existing buildings. The location, orientation, and landscaping of a building affect the local ecosystems, transportation methods, and energy use. Incorporate Smart offshoot principles in the project development process, whether it be a single building, campus or military base. Siting for physical security is a critical issue in optimizing site design, including locations of access roads, parking, vehicle b arriers, and perimeter lighting.Whether designing a new building or retrofitting an existing building, site design must integrate with sustainable design to achieve a successful project. The site of a sustainable building should reduce, control, and/or treat stormwater runoff. * Optimize Energy Use With Americas supply of fossil fuel dwindling, concerns for energy independence and security increasing, and the impacts of global climate change arising, it is essential to find ways to reduce load, increase efficiency, and utilize renewable energy resources in federal facilities.Improving the energy performance of existing buildings is important to increasing our energy independence. Government and private celestial sphere organizations are committing to net zero energy buildings in the next ecstasy or so as a way to significantly reduce our dependence on fossil fuel. * Protect and Conserve Water In many parts of the country, fresh water is an increasingly scarce resource. A sustainab le building should use water efficiently, and reuse or recycle water for on-site use, when feasible. * Use Environmentally Preferable ProductsA sustainable building is constructed of materials that minimize life-cycle environmental impacts such as global warming, resource depletion, and human toxicity. Environmentally preferable materials have a cut back effect on human health and the environment and contribute to improved worker preventative and health, reduced liabilities, reduced disposal costs, and achievement of environmental goals. * Enhance indoor(a) Environmental Quality (IEQ) The indoor environmental quality (IEQ) of a building has a significant impact on occupant health, comfort, and productivity.Among other attributes, a sustainable building maximizes daylighting has appropriate ventilation and moisture control and avoids the use of materials with high-VOC emissions. Additionally, consider ventilation and filtration to mitigate chemical, biological, and radiological att ack. * Optimize Operational and Maintenance Practices Considering a buildings operating and sustentation issues during the preliminary design phase of a facility will contribute to improved working environments, higher productivity, reduced energy and resource costs, and prevented system failures.Encourage building operators and maintenance personnel to figure in the design and development phases to ensure optimal operations and maintenance of the building. Designers can specify materials and systems that simplify and reduce maintenance requirements require less water, energy, and toxic chemicals and cleaners to maintain and are cost-effective and reduce life-cycle costs. Additionally, design facilities to include meters in order to track the progress of sustainability initiatives, including reductions in energy and water use and waste generation, in the facility and on site. REFERENCE * WBDG SUSTAINABLE COMMITTEE