Quantification of the deconstruction potential of buildings with innovative connections using BIM based DAS (Deconstructability Assessment Score) tool

Abstract

De-constructability can be defined as the ability of the structure to be deconstructed in a more efficient manner in order to eliminate demolition through the recovery of the reusable and recyclable materials. The present study aims to develop a tool by using Java application with a BIM- DAS model (Building Information modelling based De-construction Assessment Score) to validate the deconstructing ability of the structure at design stage. The methodology includes the assessment of the deconstruction potential and the ease of deconstruction, by integrating the mathematically developed DAS model with Java application considering a number of parameters and attributes such as recyclability, reusability, prefabrication, secondary finishes, toxicity and innovative connections. These attributes are implemented by means of Autodesk Revit. The above developed Java application tool is used to calculate the DAS score for two structures i) concrete building and ii) steel building each embedded with conventional and innovative connections. And the analysis of results shows that the major influencing factor for improved deconstruction potential in terms of ease of deconstruction are the use of innovative connections and the presence of steel components. Thus, the use of Java application as a tool in DAS score calculation is proved to be a new outlook in assessing the deconstructability of the structure.