Sustainable Construction Assignment PDF

Sustainable Construction 1
SUSTAINABLE CONSTRUCTION
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Table of Contents
1.0 CONSTRUCTION AND DEMOLITION WASTE MANAGEMENT...........................3
1.1 Introduction.......................................................................................................................3
1.2 Hierarchy of wastes related to construction......................................................................3
Fig 1: waste management hierarchy....................................................................................4
1.21 Re-use.............................................................................................................................4
1.22 Recycling........................................................................................................................5
1.23 Other Recovery...............................................................................................................5
1.24 Disposal..........................................................................................................................5
1.3 Practices followed in the recycling of building waste......................................................6
1.5 Analysis of the Construction and demolition wastes management in the UK..................7
1.6 Merits................................................................................................................................7
1.61 Reduced demand for landfill spaces...............................................................................7
1.62 Improved resource management.....................................................................................7
1.63 Image improvement........................................................................................................8
1.64 Productivity and quality improvement...........................................................................8
1.7 Demerits............................................................................................................................8
1.8 Opportunities....................................................................................................................9
1.9 Threats..............................................................................................................................9
Conclusion..............................................................................................................................9
2.0 WIND ENERGY............................................................................................................10
2.1 Introduction.....................................................................................................................10

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2.2 Strengths.........................................................................................................................10
2.3 Weaknesses.....................................................................................................................11
2.4 Opportunities..................................................................................................................12
2.5 Threats............................................................................................................................12
Conclusion............................................................................................................................12
3.0 GREEN BUILDING.......................................................................................................13
3.1 Introduction.....................................................................................................................13
3.2Strength............................................................................................................................14
3.21 Environmental benefits.................................................................................................14
3.22 Economic benefits.........................................................................................................14
3.23 Social benefits...............................................................................................................14
3.3 Weaknesses.....................................................................................................................14
3.4 Opportunities..................................................................................................................15
3.5 Threats............................................................................................................................15
References.............................................................................................................................17

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1.0 CONSTRUCTION AND DEMOLITION WASTE MANAGEMENT
1.1 Introduction
Construction and demolition wastes have received a lot of attention in the recent past. Mostly
the construction and demolition wastes are seen as a lens to understanding the potential for
resources efficiency improvement in the construction industry. The workshop, construction,
and demolition activities are the primary sources of wastes in many parts of the world. There
is a need for construction and demolition materials to be recycled, some of the materials,
which can be readily recycled, include, glass, plastic, wood, concrete among others. Many
benefits have been attributed to recycling of construction and demolition wastes as they have
contributed significantly to environmental conservation and preservation of natural resources
(Kubba, 2012, p. 36)
Construction is a globally rising industry. Most investments are being made in this industry.
Rapid construction development is ambulatory, modernising, demolition and construction of
residential building, roads, flyover, dams, etc. Moreover, construction renovation, land
excavation, and demolition waste have become the critical issue. The waste is mainly
composed of inert and solid waste, For instance Sandler et al (2006) state that the
approximately 136 million tons of construction and demolition waste are generated each year
in United States out of which only 20-30% is It was as high as 10-15% in UK construction
industry (Dhir, 2016, p. 205). There are numerous hostile impacts of construction &
demolition waste, including occupying large spaces of land for waste landfilling, damaging
the environments by dangerous contamination and wasting natural resources.
1.2 Hierarchy of wastes related to construction
Waste management research has developed hierarchy method. It has five stages as shown in
the figure below.

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Fig 1: waste management hierarchy
1.21 Re-use
All the materials in the construction should be targeted for re-use and disposing becomes the
only ultimate method that has to be embraced at the end of the day. Materials needed for re-
use in most cases established after carrying out of the innovation and demolition activities at
the site.Apart from that, formwork is also established through the whole process. They are in
most cases generated from concrete, and one can repeatedly make use of them before their
disposal is done. The aggregate and concrete activities are too obtained from the hacking
activities. One can make use of them in embarking the soft soil around the construction site
(Settlements, 2013, p. 182).
Figure2: Sustainable Waste Management Hierarchy

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1.22 Recycling
The method primarily applies to material that could not be reused, the elements are, therefore,
used in the production of new products that help in facilitating various other functions at the
construction site. The major processes involved include the collection of the used materials.
The materials are after that, taken through a process of reprocessing and climaxing the whole
process through remanufacturing (Kibert, 2011, p. 183). It greatly helps in the reduction of
space required for landfill. Apart from that, most energy and natural resources are saved
through the process in addition to the provision of useful products that help in improving the
levels of construction
1.23 Other Recovery
The stage mainly involves the exclusion of the waste materials from the recycling stage by
making use of different other methods such as anaerobic digestion and incineration leading to
energy rediscovery. The process leads to the production of energy in different forms such as
heat, fuel, and power in addition to backfilling (Yudelson, 2017, p. 349).
1.24 Disposal
The method is mainly applied to material that cannot be taken through the process of reusing
and recycling. Hence, forms the ultimate solution that can be sort after in the management of
the waste processes in a construction site. Different approved parties are in charge of the
operation of legal dumping sites. The wastes considered to be hazardous are managed with
high levels of care, and the actions in dealing with them are subject to the Environment
Quality Act.
1.3 Practices followed in the recycling of building a waste
Builders, teams of construction, as well as design practitioners have the ability to divert
construction as well as demolition materials from disposal though buying used as well as
recycled products. Practicing source minimization, preserving the existing structures, and