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Progress Measurement for 3D CAD Projects Martin Brooks Chief Engineer - Plant Layout & Piping Parsons Energy and Che

Progress Measurement for 3D CAD Projects Martin Brooks Chief Engineer - Plant Layout & Piping Parsons Energy and Chemical Group, London. Discovering the POWER International IGUG 1999. Synopsis.

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Progress Measurement for 3D CAD Projects Martin Brooks Chief Engineer - Plant Layout & Piping Parsons Energy and Che

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  1. Progress Measurement for 3D CAD Projects Martin Brooks Chief Engineer - Plant Layout & Piping Parsons Energy and Chemical Group, London Discovering thePOWER International IGUG 1999

  2. Synopsis Has your office ever suffered from “black box syndrome” ? Have you ever had to explain why design progress has flat lined ? At least on the board everyone can see what’s going on, and we can issue lots of paper. This presentation offers some simple, yet scientific ideas to help progress and control 3D CAD projects. It will show how the status of the model should be linked to key milestones and to the quality of the supporting information.

  3. Problem - Track along flat line ? Traditional curve Deliverables What’s happening here ? Progress Database set up 3D curve Time

  4. Purpose of Presentation • Demonstrate one proven scientific method exists, that works for us. • Encourage input from and build confidence for Clients, Project Management, Project Controls, and Construction. • Provide a forum for debate and capture other ideas on best practice in this area.

  5. Need for such measurement “ Now with the bulk of the time spent building the 3D model and the isos. being generated all at the end of the project, a billing mode needs to be developed that is based on progress in completing the model ” Oil & Gas Journal, Dec.22 1997

  6. Work Process Change • Database set up versus Start drawing • Isos before GA’s versus GA’s before isos • Fast track structural design Traditional project control by drawing found to be unsatisfactory and too subjective on 3D projects

  7. Need for new measurement tools Tradition method hrs. 3D method hrs. Start drawing 0 Set up/admin. DB 1000 Arrangements 100 Arrangements 10 Isometrics 20 Isometrics 2 What used to take a long time is now quick, and what used to take no time now takes some time.

  8. 3 Step methodology Milestone weighting Quality weighting Complexity weighting Choose number of steps to suit project

  9. Basis for tracking - Step 1 Establish milestone weightings: Manhours by discipline, to follow the 3D workflow :- • Database set-up - 5%. • Civil/Structural/Undergrounds - 23% • Piping - 43% • Isometrics - 1% See progress log slide for full listing

  10. Basis for tracking - Step 2 Establish quality weightings : Progress input against estimated quantities, then apply a factors to reflect the quality of information available :- • Status of P&ID’s ( 10%, 50%, 75%, 95%, 100%) • Status of equip. data ( 10%, 50%, 75%, 95%, 100%) • Status of design verification: material checks, clash check, design reviews, stress analysis. See progress log slide for full listing

  11. 3D model progress log - 1 Main tool for progress tracking

  12. 3D model progress log - 2

  13. Project Equipment Piping Unit / Euip. no. Unit / Line no. Status Status Status of equip. and lines Designers enter status in accordance with Work Breakdown Structure :-

  14. Database status report

  15. 7 6 5 4 Piping Isos 3 Civil/S/U 2 Milestone 1 Database set up 1 Solution - Progress by milestones Progress Time

  16. Make progress visible 7 6 5 4 3 2 1 Display pictures, plans, and charts in project area

  17. Incorporate into procedures

  18. Additional work Never stand still, continuously review for improvements and best practice :- • Measurement of C/S/A & E&I. • Automate into Project Control systems. • Cultural change to review model not paper. • Extend method into the construction. Measurement is not a substitute for experience.

  19. Final Questions Thanks for you time • mbrooks@pareuo.com • + 44 (0) 181-326-5052 • Parsons, Data General Tower, Great West Rd., Brentford, Middlesex, TW8 9AN

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