Stepwise Application of BIM-based Parametric Modeling to Tapered Slip-Form System

Slip-form technology, an automatic formwork system, has many benefits in construction industries and can shorten the construction time and reduce costs. However, slip-form systems have been designed using 2D drawing methods, which hinders the utilization of project information and impedes essential communication between project participants. The application of Building Information Modeling (BIM) technology, especially the parametric modeling method, can be an efficient solution.This study presents the beneficial effects of applying BIM technology to the design of a slip-form system. First, classification of a tapered slip-form was defined, based on Product Breakdown Structure (PBS) in a top-down approach. Then, working from the defined classification, 3D parametric models of a slip-form were constructed using the script language, SmartPart of Allplan (BIM tool). Finally, the established parametric model was tested by carrying out two different-height cases of tapered concrete pylons, automatically. This parametric design system could also be utilized to improve an efficiency of a formwork process.