The environmental consequences of construction and demolition waste in waste management project for college pdf U. With more than 135 million tons of debris to landfills every year, it’s the single largest waste source.
Reducing the amount of waste in a project is an important part of sustainable building and begins with the design process. CES learning unit, read this article and the test questions, then submit your answers by clicking the Submit Test Answers link at the bottom of this page. Understand that construction and demolition waste can be lessened even before on-site work begins, when designing out waste in early stages of construction. Learn how alternative methods of construction like modularization, prefabrication, and offsite technologies are particularly effective ways to manage waste.
Recognize that designing whole buildings for reuse at the same or different locations is a more sustainable concept than abandoning or demolishing buildings. Learn how using controlled environments to construct buildings can help projects be healthier, safer, and more environmentally-friendly. Green building efforts for site-built construction focus on reuse, recycling or diversion of waste that is generated on site. With off-site construction, however, the materials can be managed prior to leaving the factory, offering a much more efficient process to reduce the amount of waste sent to landfills. Waste hierarchy showing that the target for any waste reduction strategy is to first design out waste, and then focus on recycling and reusing any remaining waste material. Due to the factory-controlled process, modular construction is by nature material and resource-efficient.
One of the great economies of modular construction is the ability to assemble repetitive units in controlled conditions. Another is to minimize material waste associated with conventional construction due to weather intrusion and construction site theft. Modular construction capitalizes on the ability to move product in controlled manufacturing conditions, and on tight inventory control and project schedules. It is inherently waste conscious and can have minimum site impact if delivered carefully and strategically with respect to site constraints. A 2007 report published by WRAP supports the fact that off-site manufacturing processes can help the construction industry reduce waste. Offsite manufacturing already offers the construction industry benefits in terms of time and cost predictability, health and safety, and skills. However, this work shows there is the potential to make a significant difference to the amount of waste the industry produces.
D waste for non-residential projects is approximately 4. Gold certified modular project by NRB Inc. Find more information on the project here. The report names key principles that design teams can use during the design process to reduce waste, one of which is design for off-site fabrication.
The report also names design for reuse and deconstruction as another key design principle to use to reduce waste. The modular construction industry has for many years been practitioners of flexible design and reuse. Whole buildings can be reused by reversing the process in which the building was installed. The building can come apart in pieces in the same way they were created. Following is a case study where deconstruction and complete reuse were applied to a modular building. The sales center was initially manufactured in 2003 as a 10-unit custom office located in Myrtle Beach, SC.