DESIGN OF THREE-DIMENSIONAL COMPUTER AIDED DESIGN ENGINE BASED ON ISO10303 AND ITS EXPERIMENT

Abstract

 In the construction projects of Japan, it is an important subject to construct the environment where three-dimensional computer aided design data (3D CAD data) is used for continuous acquisition and life-cycle support (CALS/EC), construction information modeling (CIM), and information integrated construction. Primarily two-dimensional drawing data are now used in the design and construction stages with the use of 3D information during these stages having only recently started.
 In this paper, a 3D CAD engine using a data model based on ISO 10303 is proposed for creating and modifying 3D CAD data. There are three design concepts required for applying the information to international construction projects: data models based on ISO 10303, parametric modeling, and the consideration of temporal attributes. For a case study, 3D models of various concrete structures are generated with the proposed 3D CAD engine and the software functionality is tested.