Report from Japan: CAD Data Exchange in Japanese Civil Industry Hiroshi OKADA JGC CORPORATION

©2005 JGC CORPORATION All rights reserved. Introducing Information-technology Promotion Agency, Japan (IPA) Established ： January 5, 2004 (Reorganized as an Independent Administrative Agency) IPA was originally established in 1970 to promote the production of computer software for mainframes and extend financial support to the software industry through credit guarantee. Over time, its activities have expanded into computer security, human resource development, and other areas.

©2005 JGC CORPORATION All rights reserved. IPA Overview Annual Budget （ FY 2004 ）： \15 billion (=approx US$ 140mil) （ approx \7bil from government funds ） Number of Employees: 234

©2005 JGC CORPORATION All rights reserved.Security IPA OverviewCreativity Competi- tiveness tiveness Develop human resources to sustain growth, tap for creativity Establish secure environment for IT use Utilize IT to enhance competitiveness

©2005 JGC CORPORATION All rights reserved. IPA Overview Aim for secure and reliable manufacturing - Supports efficient development of quality software Maximum support for increased competitiveness -Provide financial support & project sponsorship, Realizing a reliable information society - Infrastructure development for reliable and secure information processing system Contributes in scouting and developing IT human resources -promotes business in IT human resource development Software Development Infrastructure for Secure and Reliable Information Systems Human Resource Development Software Engineering Center

©2005 JGC CORPORATION All rights reserved. Software development support programs Software Development

©2005 JGC CORPORATION All rights reserved. IT Utilization Software Promotion Project Development support of commercial software in the seven priority areas set down in e-Japan Priority Policy 2004 Special support for Small /medium scale industries in terms of commercialization of product. Aid granted for commercial development of the product and required marketing costs. IPA recovers 70% of development costs as royalties for the first 5 years of sales. Software Development

©2005 JGC CORPORATION All rights reserved. Logical Smart: SXF CAD Data Conformance Checker Project Kansai Sogo Jyoho Laboratory ・ Conformance check done by eyes  Time consuming e.g. A0 size 2D drawing containing more than 8500 features ・ Conformance Checker Electronically compare two drawings to detect differences Main Issues Solution ・ Ministry of Land, Infrastructure and Transport Government of Japan requires Digitalized Deliverables 2D drawings have to be in SXF format(ISO10303 AP202 cc2) OCF ： Open CAD Format Council SXF ： Standard for the CAD data exchange in the Japanese construction Field data exchange format ISO10303 AP202 cc2 Background Kansai University

©2005 JGC CORPORATION All rights reserved. Ministry of Land, Infrastructure and Transport: Public Investment projects One way to booth Economic Growth Providing Infrastructure to sustain Life At least 20 years or more of Life Have been built a while ago Need to provide continuous service Need to perform maintenance work

©2005 JGC CORPORATION All rights reserved. Problem Identification Old fashion deliverables was required by MLIT Degrading Quality Bulky Storage Area Human Readable Information As “built” or still “building”? Digitalized deliverables now required by MLIT Easy retrieve and update Long term storage Re-usage

©2005 JGC CORPORATION All rights reserved. To make best use of Issuing and Maintaining standard - CAD Drawing Standard (2002) - SCADEC* eXchange Format (SXF) Rev.2 (2002) Certified SXF standard in terms of - CAD systems: drawing, plotting and storing capability - Operators: Digitalized Deliverables, CAD Drawing Standard, SXF Knowledge * SCADEC ： Standard CAD data Exchange format in Japanese Construction field

©2005 JGC CORPORATION All rights reserved. WHY SXF Everyone claims its own formats and features Whilst ISO AP202 exists To compromise both: A specification to relate the features of CAD systems to the elements of AP202 cc2 was developed. Scadec eXchange Format(SXF)

©2005 JGC CORPORATION All rights reserved. Implementation of SXF standard AP202 AP202 AIM Subset Selected portion of AP202 AIM Template AP202Subset of each Feature Feature Implantable Common Features among CAD Systems for API API Mapping betweenAP202AIM and Features Part 21 Input/Output Common Library CAD System Mapping between Features and Specification CAD Data What MLIT Specifies What CAD System Actually can do What compromised to be practical Source: Dr. Shigenori TANAKA Kansai University

©2005 JGC CORPORATION All rights reserved. What is SXF SXF Common Library Two-way translator function Between Features and AP202 Function to input and output physical files Logical Specifications AP202 Subset Scheme Templates (Feature Structure Diagram) Features Physical Files ISO10303 Part21 files.sfc files for practical use Source: Dr. Shigenori TANAKA Kansai University

©2005 JGC CORPORATION All rights reserved. Number of Entities involved SXF (117) AP202 CC2 (241) AP202 (348) Source: Dr. Shigenori TANAKA Kansai University B_spline_curve Bezier_curve

©2005 JGC CORPORATION All rights reserved. Open CAD Format Council (OCF) 46+ CAD vendors To maintain SXF standard To certify compatibility of CAD Systems To certify qualification of Operators

©2005 JGC CORPORATION All rights reserved. Implementation of SXF standard AP202 AP202 AIM Subset Selected portion of AP202 AIM Template AP202Subset of each Feature Feature Implantable Common Features among CAD Systems for API API Mapping betweenAP202AIM and Features Part 21 Input/Output Common Library CAD System Mapping between Features and Specification CAD Data What MLIT Specifies What CAD System Actually can do What compromised to be practical Source: Dr. Shigenori TANAKA Kansai University

©2005 JGC CORPORATION All rights reserved. ISO AP202 cc2 Because it is one of these ISO standards Yes, it works But very “bulky” Part21 file transfer A Practical Solution.sfc format Reduced “size” Maintain the same “quality”

©2005 JGC CORPORATION All rights reserved. Deliverables Part21.sfc 31 Features And Instance Data Official Deliverable Practical Deliverable Transparence 31 Features And Instance Data Guarantee? Who How

©2005 JGC CORPORATION All rights reserved. Wait a minute Really the same? A Too Good Question! Logically only one exist. How to identify what it would be –By physical observation Tedious and time consuming –By calculation Logical and smart way

©2005 JGC CORPORATION All rights reserved. Only one? Logically only one exist. How to identify what it would be By physical observation Tedious and time consuming By calculation Logical and smart way

©2005 JGC CORPORATION All rights reserved. To make it practical? Setting a standard “What it would be” But… “What they are” Making it work “What it should be”

©2005 JGC CORPORATION All rights reserved. Deliverable(s) 31 Features And Instance Data 31 Features And Instance Data 31 Features And Instance Data A Drawing a Drawing Conversion Lovely Problem? You really like!! Each Machine Each application may cause a disturbance 31 Features And Instance Data 31 Features And Instance Data 31 Features And Instance Data Drawing(s)

©2005 JGC CORPORATION All rights reserved. Compromise System A System B System C System D Boundary Accounting the precision You want to maintain In Real LifeWhat We Settled

©2005 JGC CORPORATION All rights reserved. Exchange Mechanism AP202 Entities SXF Features Translation Common Library CAD System Features Translation Developed Standard Specification for CAD Data Conversion Each has its own parameters to absorb the differences among the CAD systems Human readability +

©2005 JGC CORPORATION All rights reserved. Implementation Issues Source: Dr. Shigenori TANAKA Kansai University

©2005 JGC CORPORATION All rights reserved. Yes, But How do you know for sure? –There are 31 features to be used to draw this 2-D drawing. –Each has specific instances ComparerComparee

©2005 JGC CORPORATION All rights reserved. 31 features of SXF are the key to compare the difference READ Function: SXF compatible CAD data files (either.p21 format or sfc format) Data Analyzing and storing Function: All parameters of 31 features with appropriate boundary set by SXF are compared to detect the difference and store the result READ Function Data Analyzing and storing Function READ Function Different Data Conformance checker Same Data Logical Smart: How it does Data comparison by feature

©2005 JGC CORPORATION All rights reserved. Comparison CAD Data B Comparison CAD Data CAD Data A Yes No Comparing Two Drawings CAD Data CAD Data A CAD Data B Detecting the difference: Detecting the difference Logical Smart: How it does

©2005 JGC CORPORATION All rights reserved. CAD Data B Can you tell the difference? CAD Data A

©2005 JGC CORPORATION All rights reserved. Data without changes Deleted Data Modified Data Added Data Here is the answer!

©2005 JGC CORPORATION All rights reserved. Contact Information Thank you! Address: