The inspection of the C and D waste management at the stage of building deconstruction–demolition and suggestions

Construction and demolition wastes are form of constructional materials and construction site materials contained within structure and infrastructure, transformed into waste state as a result of activities such as construction, renovation, repairment, deconstruction - demolition, disaster and field operation. Construction and demolition wastes constantly interact with environment directly and indirectly during and after building's production, use and demolition processes. Environment is affected negatively by c&d wastes for reasons such as carrying out building production, use and demolition processes without management, supervision or awareness, arbitrary dumping of c&d wastes after operations into nature, accumulation of them in natural environment, conducting c&d waste management without proper action steps, not taking hazardous wastes under regulation, c&d wastes not being assessed by correct evaluation options...etc. Therefore, c&d wastes must be managed and supervised in order to prevent them from affecting the environment negatively. Construction and demolition waste management includes preventing c&d waste to reach big amounts, exact reuse or secondary reuse, recycling of c&d waste and dispose with proper techniques. In many countries of the world consciousness about c&d waste and hazardous c&d waste is raised and management of c&d waste is seen as an obligation. However, in Turkey consciousness and awareness about c&d waste is not constituted and according to numerical data on amount of c&d waste, systems for management and supervision of structural waste fail for managing c&d waste without negative effects on environment. Deconstruction - demolition, last stage of building life cycle is process of transformation of all existing materials in construction into wastes through disposal of entire building and it causes production of c&d wastes which are as much as volume of constructional materials. Therefore, this big amount of composition must be managed. In order for constructional management to take place, regarding each building to undergo deconstruction - demolition as "PROBLEM", developing a "SOLUTION" to this problem without causing negative effects on environment and executing this solution under appropriate conditions with "APPLICATION" is necessary. It is also required to determine extent and content of the problem for existing structure through suggested reference study with structure pre-deconstruction - demolition phase, environment impact evaluation and structure environment analysis and to create action steps for solving the problem identified through management decisions and planning. It is necessary for solution action steps, created at pre-deconstruction and pre-demolition phase operation stage, to be executed properly in application at construction deconstruction- demolition instant and after construction disassembly - demolition stages. Suggested reference study for c&d waste management in construction deconstruction - demolition is concluded to provide following features: • Increase in awareness and consciousness about construction deconstruction - demolition and c&d waste management, • Increase in supervision of construction deconstruction - demolition operations and c&d waste management, • Increase in specialization on construction deconstruction - demolition operations and c&d waste management, • Improvement on proper decision making regarding construction deconstruction and demolition methods, • Implement of technical, technological and managerial development on construction deconstruction - demolition and c&d waste management in Turkey, • Contextualization of construction deconstruction - demolition operations and c&d waste management processes as a whole for proper managing of c&d wastes. Keywords: C&d waste, impacts of c&d wastes on environment, construction deconstruction – demolition, c&d waste management, relation between construction deconstruction - demolition and c&d waste management