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BIM-based Framework for Visual Evaluation of Building Circularit (97 characters)

This paper proposes a BIM-based framework for visually assessing the circularity and life cycle cost of buildings, aiming to improve design decisions for lifecycle sustainability. The framework integrates WBS, CBS, and LCC and visualizes different parameters on 3D geometry. The results are measured using a sample Circular Indicator (CI) that considers factors such as circular business models, volume involved, environmental impact, investment costs, and more. Ongoing questionnaires are being conducted to evaluate the visual results perception. (497 characters)

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BIM-based Framework for Visual Evaluation of Building Circularit (97 characters)

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  1. 1Ingegneria dell’innovazione, Università del Salento-Lecce (IT) carla.dibiccari@unisalento.it; 2Lehrstuhl für Computergestützte Modellierung und Simulation,TechnischeUniversitätMünchen, jimmy.abualdenien@tum.de Carla DI BICCARI1, Jimmy ABUALDENIEN2, Andrè BORRMANN2, Angelo CORALLO1 A BIM-based framework to visually evaluate Circularity and Life Cycle Cost of buildings.

  2. Objectives • This paper proposes a framework to enable the assessment of the “circularity” and the LCC of a building in the different life-cycle phases using BIM to collect inputs and visualize the results. The framework was tested using the BIM model of one existing building as a case study. • The framework aims at improving design decisions supporting comparisons among different alternatives from a conjunct point of view of lifecycle sustainability (environmental, economical and social). • Visualizingdifferentparameters on 3D geometry. 2116

  3. Methods In theframeworkwetry to integrate WBS, CBS and LCC that are usually developed in dedicated software applications separated from the authoring tools. • In this research, we consider the five business models for circular growth suggested by [16], ranked in order of circularity from “low” to “high” as a measure of environmental gain, as proposed by the Netherlands Environmental Assessment Agency. We mapped CBM with different naming to the same meaning. 2116

  4. Methods/2 • The framework is implemented as a Revit add-in that allows visualizing a degree of circularity for each group of BIM components involved in a CBM and the life cycle cost associated. • The degree of circularity can take five increasing values from low to high. A color has been associated with each value. For the scope of testing the framework, in this paper a sample Circular Indicator (CI) has been proposed to measure the degree of circularity (2). • CI= (CBM+V+E)/3 • NPV = C + R - S + A + M + E (+W + O) CBM = Circular Business Modell V = Volume Involved in the CBM E = Environmental Impact (From LCA) C = investment costs R = replacement costs S = the resale value at end of study period (residual costs) A = Annually recurring operating, maintenance and repair costs M = Non-annually recurring operating maintenance and repair cost E = energy costs W = often isolated – water costs O = other costs. 2116

  5. Results A further round of questionnairesaboutvisualresultsperceptionisongoing. 2116

  6. Carla DI BICCARI carla.dibiccari@unisalento.it 2116

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