CEE2141 CE114/214 Theory: Models functions, forms, and behaviors of organizations, processes, and products Practice Models for AEC construct and interrelate to maximize project value.

CEE2142 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 –+/ 

Introductions CEE2143

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. CEE2144 Decisions … Assignment: Design, Fabricate, and Erect the iRoom Due: October 15, 2009 …

Just Kidding, but…. How would you gather and organize all of the people, tasks, information, materials, decisions, quickly enough to get this done? CEE2145

6 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

Product Model

Models CEE2148 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

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 CEE2149

Representation: Schema CEE21410

Representation: Instance CEE21411

CEE21412 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

Performance Model 13

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

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

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 CEE21416

Project (POP) Models CEE21417

Organization Models CEE21418

Life Cycle Assesment Models CEE21419

Product Models CEE21420

Structural Models CEE21421

Energy Models 22

Design Process Models CEE21423 Arup: Stanford GSB/Library Process Integration Platform

Construction Process Models CEE21424

Integration/Optimization Models CEE21425

Decision Models CEE21426

CEE21427 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

CEE 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

CEE21429 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

CEE21430 Organization Course URL: Readings – Introduce modeling concepts Lectures – Reinforce modeling concepts Labs – Reinforce basic modeling concepts Queries – Test comprehension of basic concepts Evaluation: Queries + (a little) discretion

CEE21431 Agenda

CEE21432 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.

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 CEE21433

CEE21434 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

Wednesday Readings on website Fundamental Modeling Concepts –Model scope and boundaries –Objects –Attributes –Relationships –Schema and Instance –Reasoning CEE21435

Query 1: Next Monday Choose 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. CEE21436

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). CEE21437 Build a model analysis

Speculations about Model-based Integrated Engineering CEE21438