LAUSR

Abstract Building Information Modeling (BIM) is a widely established method in the architecture, engineering, construction, and facilities management (AEC/FM) industry. Although BIM focuses on processes throughout the lifecycle of the built environment, the applications in the planning phase, e.g. the generation of construction site layouts, have not reached their full potential yet. One important example herein is the allocation and dimensioning of resources (e.g., building materials and equipment) which is typically carried out by humans according to clearly defined rules and best practices. This paper presents model-based rule checking for the planning of construction site layouts. We demonstrate that existing Business Rule Management Systems (BRMS), such as the open-source rule engine Drools, can be used. We combine Drools with the Industry Foundation Classes (IFC) to retrieve data from a building information model and use the information within the rule engine. We define general model requirements and implement a sample set of prototype rules. We also introduce the concept of offset geometry for rules that, for example, demand a known safety distance between temporary construction site elements. The developed approaches are explained and evaluated in field-realistic, practical case studies. Finally, we present a discussion how the application of the developed rule-based system may assist human decision making in tasks such as safe construction sites layout planning.