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Construction waste or debris is any kind of debris from the construction process. Different government agencies have clear definitions. For example, the United States Environmental Protection Agency EPA defines construction and demolition materials as “debris generated during the construction, renovation and demolition of buildings, roads, and bridges.” Additionally, the EPA has categorized Construction and Demolition waste into three categories: non-dangerous, hazardous, and semi-hazardous.
Construction and demolition materials are created during the process of creating a new building or structure or when renovating or demolishing an existing structure. These materials are usually heavy materials used in large volumes in modern construction, such as concrete, steel, wood, asphalt and gypsum. There is also waste generated in the form of paper during the construction phase in order for interested parties to share various types of information.
Of total waste in the United States, 90% comes from the demolition of structures, while waste generated during construction accounts for less than 10%. Construction waste frequently includes small amount of hazardous materials that require they be disposed of differently than most construction waste, such as fluorescent lights, batteries, and other electrical equipment.