ABSTRACT
The development of a gutting and demolition cost index is essential to determine the life cycle costs and to design recyclable buildings appropriately. Accordingly, it is important to record and analyze the dismantling phase and the existing concepts for planning recyclable buildings. In addition, the available cost indices for dismantling and demolition must be researched and analyzed with regard to their structure and information content. Taking a top-down approach into account, the essential parameters are to be worked out. Consequently, a framework was established in terms of pollutants, gutting, demolition and disposal. In addition, certain standards such as the Cradle 2 Cradle concept, the determination of the actual residual value of a building according to Madaster, the Urban Mining Index and the DGNB certificate requires a valid cost index related to the demolition. This should also meet the demand for secured dismantling costs. The integration of the cost groups according to DIN 276, the STLB-Bau as well as the waste key and the statistical processing of costs on the subject of demolition is needed to be considered. By analyzing the offer documents and further discussions with experts, further factors can be worked out that influence the unit price. A database system is to be developed in a bottom-up approach, taking into account the identified requirements. Madaster and Concular and Cradele2Cradle requirements are met as digital planning and documentation are included.
