The Research On Application Of CAD Technology In Hydraulic Building

Based on the research to the CAD of Hydraulic Bui1ding, in ths thesis,some kinds of CAD technO1ogy and AutoCAD secondary-development technologyare ifltroduced. The tecboque of 'nirectory Path Lock" is origiuslly Put fompd.The engineering graPhic library and standard set have been established, Which canimPune design efficiency greatly A normal CAD system of canal syStem-works isbuilt. Generaliy. this thesis mainly focuses on the fOllowing parts; (l) The Tesearchof system analysis modeling technology, (2) The research of collaborative design indifferent place. (3) DescriPtion and ldentification of STEP standard datu in Internet,(4) The research of engineeAng graPhic libreq, (5) The research of AutOCADsecondary-develoPment technology, (6) The research of connection between thesecondarydeveloPment tools and RDBMS, (7) The research of Standard set, (8) Thedesign and development of canal System~works' CAD system.