Note: Sample below may appear distorted but all corresponding word document files contain proper formattingExcerpt from Book Report:
If there is an aggregate sub-base, these can provide water quality treatment. There should be good compaction and appropriate geo-textiles especially for areas accessible to heavy vehicles.
Permeable pavements reduce the need for deep excavations thereby providing a cost benefit. This system reduces the run-off rates and peak flow. The overall benefit is that it removes pollutants and holds water so that it does enter the main drainage. A lot of water in the main drainage would either need pumping or treating thereby using energy (Wild et al. 2002).
They are continuous vegetated drainage systems which convey or store water while allowing filtration when appropriate. Usually, they are the equivalent of roadside gullies or drainage pipes in conventional drainage systems. However, swales have gentle gradient so that water moves at low velocity. The sediments in storm water run-off can, therefore, settle out.
The advantage of swales is that it has vegetation which absorbs carbon dioxide at the roadside. The designers may include an under-drain system in the swale. Swales require little capital and any pollution or blockage is visible.
4.6. Filter Strips
These are vegetated linear pieces of land that accept surface run-off as sheet flow. They are usually between a hard surface and a receiving watercourse, say a stream. The vegetation filter the run-off by allowing pollutants to settle and water to infiltrate.
4.7. Filter Trenches
These are shallow trenches that contain stones resulting in some void space. The trenches convey storm water downstream in SUDS and also filter the water. The trenches also allow infiltration and should not contain untreated drainage. The main contribution to the overall scheme is the slowing down of surface run-off.
4.8. Bio-Retention Areas
Bio-retention areas are that use engineered soils and vegetation as part of landscaping in a shallow basin. They remove pollutants and decrease run-off. They are ideal for frequent rain events. Construction of these features should occur at the end of development in order to reduce erosion. The precautions in the construction include not tearing the geo-textile, proper testing of the soil, and avoiding compaction (Roesner et al. 2001).
4.9. Infiltration Basins
These depressions that contain vegetation store storm water and let it infiltrate gradually underground. There is risk of destruction and failure due to deposition of sediments during construction. Therefore, construction of this feature should occur when the site is stable.
4.10. Detention Basins
These surface basins store storm water in them thereby attenuating surface run-off by providing flow control. There should be healthy vegetation. Therefore, the soil on the sides should be porous and of sufficient fertility and depth. Careful preparation would prevent erosion damage while ensuring the basin retain surface run-off.
Wetlands are shallow and marshy areas that have aquatic vegetation cover. They have ecological benefits since they detain flows for long periods, allowing the settling of sediments and removal of contaminants through aerobic decomposition. The soils should be fertile, porous, and deep to allow vegetation to grow.
5. Cost-Benefit Analysis
How do these methods fit in to the scheme of reducing carbon emissions? The green roofs and other vegetation that are part of the SUDS system absorb carbon dioxide. Water harvesting and re-use minimises the energy requirements for pumping and purification. Natural methods of removing pollutant also minimise the need for energy use (Metcalf & Eddy 2007).
The various methods of conveyance in SUDS slow down surface water run-off and its integration into the sewers (Villarreal et al. 2004). This prevents overloading of the sewers thereby reducing energy requirements for pumping and treatment. Therefore, the whole SUDS treatment train decreases carbon emission either by absorption through the vegetative cover, or minimising energy use.
There are a number of issues that arise in Sustainable Urban Drainage Systems. Are they really sustainable given that they require regular maintenance? Granted, the systems require clear ownership and responsibility for operation and maintenance as well as guidelines for future adoption. Eventually, SUDS are cheaper than conventional systems and fit in the bigger picture of a green urban space. Further, the re-use of resources and energy savings pay off in a few years.
Floods destroy infrastructure and result in huge losses both for the individuals and the public. SUDS mitigate flood risk and ensure sustainability even in the wake of uncertain future climate patterns (Mays 2007). Further, the restoration or introduction of biodiversity is essential, especially in modern urban spaces.
The Code for Sustainable Homes is holistic in its approach to sustainability. Coed Darcy should achieve level 4 compliance with the code. There are a number of areas that SUDS can contribute to the overall rating. The assessment criteria will inform the designers so as to achieve the target rating. Given that this is a sustainable village, the compliance to the code has financial implications for the developers.
The first step is to appoint appropriately qualified personnel. Performance of flood risk assessment should prelude the design process and there should be provision for allowances for changes in climate. The peak run-off and volume run-off must be follow the methodology laid out in the SUDS Manual, CIRIA C697 (2007).
The SUDS will contribute credits for efficient energy use and CO2 emissions reduction. It will also score under the item for water use, surface water run-off, pollution reduction, and ecology.
It is clear from the foregoing discussions that SUDS are part of a wider scheme for sustainability of urban spaces. The major aim is to control surface water run-off, yet in the process also reduces energy use, encourages re-use and waste management, improves the ecosystem, increases the aesthetic value of the spaces, and significantly reduces carbon emissions.
The National Planning Policy Framework has combined 44 documents into a single report that covers diverse sectors and issues. This demonstrates the interdependent nature of sustainability issues. Designers have to plan SUDS within the wider context of the development, bearing in mind other policy documents and major aspects like cost.
In conclusion, the SUDS will be instrumental in ensuring the sustainability of Coed Darcy. Their implementation shall start right from the design stage up to the post-construction stage.
Apostolaki, S., Jefferies, C., Smith, M. & Woods-Ballard B. 2002, Social Acceptability of Sustainable Urban Drainage Systems. Proc. 5th Symposium of the International Planning and Environmental Association. Oxford, September.
Apostolaki, S, Jefferies, C. & Smith, M. 2003, the Perception and Social Acceptability of Sustainable Urban Drainage Systems. Proc. 1st International Conference on Sustainable Development & Management of the Subsurface. 5-7 Nov. Utrech, the Netherlands
Construction Industry Research and Information Association (CIRIA) 2000, Sustainable Urban Drainage Systems -- design manual for Scotland and Northern Ireland. Report No. 521
Construction Industry Research and Information Association (CIRIA) 2002, Source Control Using Constructed Pervious Surfaces. Report No. 582
Gardiner, J. 1991, River Projects and Conservation: a Manual for Holistic Appraisal. John Wiley and Son, Chichester.
Jefferies C. 2003, SUDS in Scotland -- the Monitoring Programme of the Scottish Universities SUDS Monitoring Group. Scotland and Northern Ireland Forum for Environmental Research (SNIFFER) Report No. SR (02)51, August.
Macdonald K.C.B. 2003, the Effectiveness of Certain Sustainable Urban Drainage Systems in Controlling Flooding and Pollution from Urban Runoff. PhD Thesis, University of Abertay, Dundee.
Roesner, L.A., Campbell, N. And D'Arcy, B.J. 2001, Master Planning Storm water Management Facilities for the Dunfermline, Scotland Expansion Project. Proceedings of Novatech 4th International Conference on Innovative Technologies in Urban Storm Drainage. Lyons, France, June 25-27.
Wild, T.C., Jefferies, C. & D'Arcy, B.J. 2002, SUDS in Scotland -- the Scottish SUDS database. Scotland and Northern Ireland Forum for Environmental Research (SNIFFER) Report No. SR (02)09, August.
Villarreal, E.L., Semadeni-Davies, a. And Bengtsson, L. 2004, Inner city storm water control using a combination of best management practices. Ecological Engineering 22: 279-298.
Ahern, J. 2007, Green infrastructure for cities: The spatial dimension, a chapter in Cities of the Future: Towards integrated sustainable water and landscape management (V. Novotny,
and P. Brown, eds.), IWA Publishing, London, UK.
Anon. 2008, Resource from Waste -- Integrated Resource Management Phase I Study Report, Prepared for BC Ministry of Community Services, Victoria, BC, Canada
IPCC 2007, Summary for Policy Makers, Climate Change 2007: The Physical Scientific Basis, Fourth Assessment Report, Intergovernmental Panel on Climatic Change, Working
Group (WG 1), Geneva.
Heaney, J. 2007, Centralized and decentralized urban water, wastewater & storm water systems, in Cities of the Future: Towards integrated sustainable water and landscape
Management (V. Novotny and P. Brown, eds), IWA Publishing, London, UK
Hill, K. 2007, Urban ecological design and urban ecology: an assessment of the state of current knowledge and a suggested research agenda, in Cities of the Future: Towards integrated sustainable water and landscape management (V. Novotny and P. Brown, eds), IWA Publishing, London, UK
Novotny, V. And P. Brown 2007, Cities of the Future: Towards Integrated Sustainable Water and Landscape Management (V. Novotny and P. Brown, eds),…[continue]
"Urban Drainage System Sustainable Urban" (2013, January 12) Retrieved October 24, 2016, from http://www.paperdue.com/essay/urban-drainage-system-sustainable-77310
"Urban Drainage System Sustainable Urban" 12 January 2013. Web.24 October. 2016. <http://www.paperdue.com/essay/urban-drainage-system-sustainable-77310>
"Urban Drainage System Sustainable Urban", 12 January 2013, Accessed.24 October. 2016, http://www.paperdue.com/essay/urban-drainage-system-sustainable-77310
As a consequence, social unrest can then be avoided only by subsidies. The town is socially and entinancially heavily burdened. Another problem is that the spontaneous rainwater flow, mixed with wastewater in a heavy downpour, pollutes the river or lake once again and provides more problems for gaining potable water. Scenario 3: As a result of climatic and geological conditions there is little potable water available; the resources are quickly
Benedict Park Urban Design and Ed Benedict Park The story of Ed Benedict Park in Portland, Oregon, is indicative of many of the principles of urban design and the importance of gardening as a discipline, a knowledge area, and a matter of aesthetics. Named for the citizen that dedicated the last years of his life to claiming this publicly acquired space, the land that now contains a skateboard park, a public garden,
Chicago: Planning and Urban Life Urban Sustainability Urban sustainability revolves around many factors. This means for the area to endure, several factors have to be considered. These factors may involve engaging the local communities in order to re-urbanize a given region. Areas to consider during this upgrade include the building structures, the infrastructure connections, urban design, which includes transportation, means. Transportation means avoiding cars in the central business district to avoid delays.
Vertical Farming-Opportunities and Challenges for Singapore There has been much talk surrounding the environmental issues of food production, with many now suggesting the city is the ideal place for growing food to cater for rapidly expanding urban populations. In Singapore, small-scale examples of this are emerging, such as Changi General Hospital and the Tanjong Pagar apartment complex. This dissertation will examine the Vertical Farming movement, and look at the opportunities and
Competitor products and their equivalent prizes, this is so that after establishing our break-even analysis it can act as a guiding line to set the best price. (Tao 2008) The survey should enable one establish the best marketing strategies and anticipate any future contingencies. Entrepreneurship development services This service will target individuals who wish to start business on their own or in a group it will mainly involve Training on how to originate
8 billion, and primary metal manufactures, $1.4 billion (Exports pp). Together, these five manufactured product categories accounted for 61% of the state's total exports of goods in for that year (Exports pp). In dollar terms, the leading manufactured export growth category is transportation equipment, rising $294 million between 1999 to 2003, while others included miscellaneous manufactures, up $248 million, processed foods, up $192 million, and primary metal manufactures, up $171 million
From the point-of-view of the variation and flexibility of the species such cultivated woody crops rank as no more than cornfields. While the tree farms are conveniently be stretched on the private lands, national forests those are considered priceless reservoirs of most of the biological diversity of the nation cannot expand so easily. The commercial logging is considered as the greatest danger for survival of the national forest system.