Download - CE114/214
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CEE214 1
CE114/214Theory: Models
functions, forms, and behaviors of
organizations, processes, and products
Practice Models for AECconstruct and interrelate to maximize project value.
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Todays Agenda- Introductions- Models social, physical, graphical, SymbolicRepresentation (objects, attributes, relationships)
Reasoning
- Models for AECfunctions, forms, and behaviors of
organizations, processes, and products
– In Class Exercise– Overview of Class– +/
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Introductions
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First AssignmentStanford 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.
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Decisions
…
Assignment: Design, Fabricate, and Erect the iRoom Due: October 15, 2009
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Just Kidding, but….
How would you gather and organize all of the people, tasks, information, materials, decisions, quickly enough to get this done?
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Graphic product models+: Clear to viewer
: computer support ...?– List components– Assess stability– Estimate energy– Estimate cost– Plan construction– Identify interferences
….
School-building.png
Rectangle 1, Rectangle 2, Rectangle 3
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Product Model
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Models
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Representation
• Objects named entities with:
• Attributes• Relationships
– To other objects– Constraints on attributes & relationships – Constraints on behaviors
• MethodsTo set/read OAR, and to encapsulate behavior
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Representation: Schema
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Representation: Instance
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What is Model-Based Reasoning
Analysis of SystemUse 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
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Performance Model
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Reasoning
Symbolic model of internal processing (Transparent Box)
Specialized heuristics
(Expert Systems)
Mathematical/statistical (Black Box)
InputModels
OutputModels
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Models for AEC Projects
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•Functions / ObjectivesDesired Behavior of the POP
•Forms / AlternativesFor the POP
•Behavior / PerformancePredicted or measured for the POP
•ProcessesThe work to be done
•Organizations The people involved the work
•Products The results of the work
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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
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Project (POP) Models
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Organization Models
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Life Cycle Assesment Models
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Product Models
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Structural Models
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Energy Models
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Design Process Models
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Arup: 130676-Stanford GSB/Library
Process Integration Platform
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Construction Process Models
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Integration/Optimization Models
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Decision Models
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Why Model?: Increase Value
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
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In-class exercise• Develop an “instance” symbolic model that allows
a contractor to identify elements and their costs.
iRoom Product Model
Elements
Walls
iRoom CostsTypical Costs
Walls
Painted CMU•Cost / Unit $60•Units Linear Feet
Windows
Wall 1• linear feet = 10’•Wall type = painted cmu
Cost Item 1•Product Model Item = Wall 1•Construction = Painted CMU•Cost = $600
Cost Items
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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 communicate effectively• Extend your thinking about engineering
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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
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Agendahttp://www.stanford.edu/class/cee214/Agenda.htm
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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.
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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
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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
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Wednesday
• Readings on website
• Fundamental Modeling Concepts– Model scope and boundaries– Objects– Attributes– Relationships– Schema and Instance– Reasoning
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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.
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Query 1: Next Monday
• 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).
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Build a model analysis
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Speculations about Model-based Integrated Engineering
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