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CE114/214

CE114/214. Theory: Models functions, forms, and behaviors of organizations, processes, and products Practice Models for AEC construct and interrelate to maximize project value. Todays Agenda. Introductions Models social, physical, graphical, Symbolic

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CE114/214

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  1. CE114/214 Theory: Models functions, forms, and behaviors of organizations, processes, and products Practice Models for AEC construct and interrelate to maximize project value. CEE214

  2. Todays Agenda • Introductions • Models social, physical, graphical, Symbolic Representation (objects, attributes, relationships) Reasoning - Models for AEC functions, forms, and behaviors of organizations, processes, and products • In Class Exercise • Overview of Class • +/ CEE214

  3. Introductions CEE214

  4. First Assignment Stanford will host intensive multinational design charettes to address growing crises around the world. They need an iRoom in the Stanford Quad to enable close proximity to the dignitary quarters which will be in the surrounding buildings. Assignment: Design, Fabricate, and Erect the iRoom Due: October 15, 2009 Decisions … … CEE214

  5. Just Kidding, but…. How would you gather and organize all of the people, tasks, information, materials, decisions, quickly enough to get this done? CEE214

  6. Graphic product models School-building.png +: Clear to viewer : computer support ...? • List components • Assess stability • Estimate energy • Estimate cost • Plan construction • Identify interferences …. Rectangle 1, Rectangle 2, Rectangle 3 CEE214

  7. Product Model

  8. Models • Purpose-built • Descriptions developed at relevant explicitly stated level of detail • Representation • Objects, attributes, relationships, methods • Reasoning to accomplish purpose • Satisfy constraints on relationships (e.g., wall supports roof) • Aggregate and elaborate information (e.g. quantity takeoff) • Simulate behavior (e.g., energy consumption) • Synthesize new design information (e.g., detailed field instructions) • User Interfaces • enable the inspection, modification and control of the models through 3D Visualizations, behavior diagrams, spread sheets… • Tested • validated on real world case studies CEE214

  9. Representation • Objects named entities with: • Attributes • Relationships • To other objects • Constraints on attributes & relationships • Constraints on behaviors • Methods To set/read OAR, and to encapsulate behavior CEE214

  10. Representation: Schema CEE214

  11. Representation: Instance CEE214

  12. What is Model-Based Reasoning Analysis of System Use compiled heuristics, mathematics, statistics, sometimes combined with human reasoning Examples: analyze building model to: • List components • Estimate cost • Simulate energy consumption • Plan construction • Identify construction interferences CEE214

  13. Performance Model

  14. Symbolic model of internal processing (Transparent Box) Specialized heuristics Input Models Output Models (Expert Systems) Mathematical/statistical (Black Box) Reasoning CEE214

  15. Models for AEC Projects • Processes • The work to be done • Organizations • The people involved the work • Products • The results of the work • Functions / Objectives • Desired Behavior of the POP • Forms / Alternatives • For the POP • Behavior / Performance • Predicted or measured for the POP

  16. Models for AEC Projects covered in this class • Project (POP) Models • Organization Models • Life Cycle Assessment Models • Architectural Product Models • Energy Models • Structural Models • Process Performance • Decision Models • Integration Models CEE214

  17. Project (POP) Models CEE214

  18. Organization Models CEE214

  19. Life Cycle Assesment Models CEE214

  20. Product Models CEE214

  21. Structural Models CEE214

  22. Energy Models

  23. Design Process Models Process Integration Platform Arup: 130676-Stanford GSB/Library CEE214

  24. Construction Process Models CEE214

  25. Integration/Optimization Models CEE214

  26. Decision Models CEE214

  27. Value adding Identifying objectives Generating best design Install column Validate performance Non-value adding Look for CAD drawing Wait for delivery Move part to machine Prepare a bill Why Model?: Increase Value CEE214

  28. In-class exercise • Develop an “instance” symbolic model that allows a contractor to identify elements and their costs. iRoom Product Model Typical Costs iRoom Costs Elements Walls Cost Items Walls Windows • Painted CMU • Cost / Unit $60 • Units Linear Feet • Cost Item 1 • Product Model Item = Wall 1 • Construction = Painted CMU • Cost = $600 • Wall 1 • linear feet = 10’ • Wall type = painted cmu CEE214

  29. Course Objectives • Understand fundamentals of modeling • Understand state of the art AEC modeling tools • Develop novice skills using these modeling tools • Relate models to business objectives and limits • Learn problem-solving skills • Learn to communicateeffectively • Extend your thinking about engineering CEE214

  30. Organization Course URL: http://www.stanford.edu/class/cee214/ Readings – Introduce modeling concepts Lectures – Reinforce modeling concepts Labs – Reinforce basic modeling concepts Queries – Test comprehension of basic concepts Evaluation: Queries + (a little) discretion CEE214

  31. Agenda http://www.stanford.edu/class/cee214/Agenda.htm CEE214

  32. Lab Practice building simple models. 2 hours in class, perhaps another hour or two after class Assume you know how to use basic windows applications and user operations. CEE214

  33. Lab Use • Students use SUNET ID and password • Follow all Lab Rules - Clean up after yourselves, turn off lights • Limited after hours access to iroom • keys CEE214

  34. Queries/ Evaluation Coursework.stanford.edu Weekly queries on readings, lectures, and lab. Queries 1 thru 9 10 pts each Attendance & Participation 10 points Total Points 100 points CEE214

  35. Wednesday • Readings on website • Fundamental Modeling Concepts • Model scope and boundaries • Objects • Attributes • Relationships • Schema and Instance • Reasoning CEE214

  36. Query 1: Next MondayChoose a Project Site We learn about AEC models by building them for a specific problem partially of your own design. An “iroom” to be placed within a context of your choosing, for a client of your choosing. There is no advantage to being elaborate with the selection of site and the point is to give you enough context to inform the models you build. Create a link to a google map of the site of your choice. Write • Write a project brief. Who wants the project, what are their goals, who else is impacted? What are the constraints? • You will build several models related to this project, so this context is useful for defining the model contents. CEE214

  37. Query 1: Next Monday Build a model analysis • Follow the 10 steps outlined in INTRODUCTION TO MODELING AND SIMULATION Anu Maria Use approximately the same level of detail to describe one of the models I have previewed today (or describing a different model is ok too). CEE214

  38. Speculations about Model-based Integrated Engineering CEE214

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