bim –understanding the process - same dc … –understanding the process the...

BIM – UNDERSTANDING THE PROCESSThe State‐of‐the‐Art Tool in Design and Construction

SPONSORED BY SAME, DC POST IN ASSOCIATION WITH ACEC M/W

“Insanity: doing the same thing over and over again and expecting different resultsagain and expecting different results.

‐Albert Einstein

Definition of BIM

Building Information Modeling (BIM): The process of generating and managing building d d i i lif l i ll i hdata during its life cycle. Typically it uses three‐dimensional, real‐time, dynamic building modeling software to increase productivity in building designsoftware to increase productivity in building design and construction. The process produces the Building Information Model, which encompasses building geometry, spatial relationships, geographic information, and quantities and properties of building componentsbuilding components.

History of Methods of Production

70 80 90 00 1070s 80s 90s 00 10

Building Lifecycle Mgt.

Building Information Modeling

Objects

Layered Production

Computer‐Aided Drafting

Tracing Paper

Manual Methods CAD Object‐Oriented CAD Centralized, Integrated Databases

FutureTechnologies

Central Database vs Federated File Structure

Database FederatedBuilt on a database platform that Built on a CAD based platform. pallows the creation of parametric and information‐rich objects. Parametric modeling

pUses a federated file structure to develop a composite model to produce construction documents.

dependencies are automatically updated whenever changes are made and are bi‐directional.

• Sequential workflow between modeling and documentation

• Fully parametric

• Parallel workflow between modeling and documentation

• Limited parametric• Fully parametric• Bi‐directional• Central database file structure

• Limited parametric• Not bi‐directional• Federated file structure

Federated Workflow

Optional Project Master Model

Extraction Files

GeometryFiles

3D 2D

Project Model

Sheet Drawing Files

Struct

h

Struct

hArch

Mech

Arch

Mech

MechStruct Arch

Discipline Master Models

Mech Mech

Schedules and

Design Models

Schedules and Tables

Central Database Workflow

USER 1 USER 2

CENTRAL MODEL

USER 4 USER 3

Central Database Workflow

What is the Model Intent?

1. Visualization• Perspectives, Renderings

2 Prod ction2. Production• Schedules, Drawings

3 Interference Detection3. Interference Detection• 3D Clash Detection, 3D coordination with sub‐consultants

4 A l i4. Analysis• Structural, Thermal, Code Compliance

5 E d U5. End User• Facilities Management, GIS

6 S l Ch i I t ti6. Supply Chain Integration• 4D, 5D Simulation, CNC Fabrication

BIM Execution PlanThe Who, What, Where, When

1. Level of Detail (LOD)

2. Model Element Author (MEA)

References

‐AIA Document E202

‐PSU BIM Project Execution Planning GuidePSU BIM Project Execution Planning Guide

BIM in the Design Process

David Rushforth, PE, LEED AP BD+C


BIM Process Workflow

Modelers vs. Drafters Designing in the Model Modeling effort over the life of the project Modeling effort over the life of the project

– Increased modeling time up front compared to CAD» DD phase drawings may be “lighter”

Front end coordination– Front end coordination» 3D coordination» Conflict resolutions


BIM Process Parametric documentation

Each element has parameters Can organize/query parameters in schedules

Previous methods– Symbols and information stored separately

f d l d h d– Information duplicated each time it is used

Parameterized– Symbols, 3D geometry, and information stored together– Can locate 3D geometry by searching information and vice versa

– Information stored once can be referenced many times


Benefits to the Design Parameters contained within model

Data in one location reduces discrepancies on drawings Calculated loads and schedules are automatically updated to reflect changes on plans and vice versap g p

– Panel schedules– Device counts– Equipment schedulesEquipment schedules


Benefits to the Design Visualization enabling design

Verify vertical clearances and mounting heights Determine floor box depths Verify design of systems in 3D Verify design of systems in 3D


Coordination of Trades 3D coordination is enabled

Design around other elements in the model Can turn on/off various trades as needed during design

Design information is shared Design information is shared Same model elements used by all trades Can implement automatic notifications of changesp g


Coordination of Trades Coordination tools

Walk/fly through Shared Schedules Custom applications Custom applications Clash detection


Design Analysis and Verification Visualization on plans

Lighting photometric calculations Loads (W/sf) Fire ratings of walls Fire ratings of walls

Run calculations and verifications using the model’s database Automate system diagrams and calculations


Design Analysis and Verification Shared model for energy and solar analysis

Analyzing the Model

Design Analysis and Verification: Shared model for photometric analysis


Design Analysis and Verification Future shared model for computational fluid d i ( ) l idynamics (CFD) analysis

Temperature ProfilePerimeter Study ‐Particle Trace

Air Velocity Profile


Documentation Final product

Construction drawings Model

Parametric benefits Parametric benefits Global changes

– Can adjust project standards (element symbols, line weights, text heights, general sheet notes, keynotes, revision names/numbers, etc. )

– Vs. per sheet as with CAD projects

d/ i i hi Issued/revision history Sheet lists


Drawbacks and Limitations Linked models (coordination and data sharing li i i )limitations)

Software and network limitationsC l ft i t i i Complex software requires training

Evolving technologyMore coordination time in the design phase is More coordination time in the design phase is expected and required by clients

GIGO (Garbage in garbage out) appliesGIGO (Garbage in, garbage out) applies

BIM in ConstructionCLASH DETECTIONCLASH DETECTION

BIM in ConstructionCONSTRUCTION SEQUENCINGCONSTRUCTION SEQUENCING

BIM and Operations

•Data Strategy •Begin with the end in mind•Begin with the end in mind

•Life Cycle Data Mix

•BIM for Bulk Data Processing •SEPS•COBIE •Maximo

•Slim BIM for Synchronous Info

Graphic / Attribute Mix p

Graphic DesignGraphic DesignGraphic DesignGraphic Design

Graphic DesignGraphic Design

Graphic Original Graphic Original DesignDesign

Data Data AttributeAttributeAttributeAttributeDataData

AttributeAttributeDataData

ata DataDataData

Contractor

DataData

A/E Owner/Operator

SEPSSEPS COBie2 Maximo

Space & Equipment PlanningAutomating a Complex, Data‐rich Process

Space & Space & Equipment Equipment

g p ,

Equipment DatabaseEquipment Databaseq pq p

Planning SystemPlanning SystemSpace/Room Database

Space/Room Database(SEPS)(SEPS)

E i t S ifi ti D t b

DatabaseDatabase

Equipment Specification Database (for HFPA: Military Handbook 1691)

Project Program

Space ListSpace List

Equipment ListEquipment List

JSN (key field)

Equipment ListEquipment List

Room Guideplates and Equipment Lists

Construction Operations Building Information Exchange – (COBie2)Information Exchange (COBie2)

COBieConstruction Operations Building Information ExchangeConstruction Operations Building Information Exchange

Facilities(or projects)

Contact

Floors Types( i t t )

Documents(approved electron

Manuals

Warranties(equipment types)

Components(named equipment)

( ppsubmittals)

Installation(Make, Model, Serial #)

Parts

….. etcSpaces

SystemsZones

Project Lifecycle

Design + Documentation Construction Project Delivery

COBie Worksheets 1 through 8

BIM Modeling – Data Development

COBie Worksheets 9 through 16

Developing Data + BIM ComponentsAssigning COBie Data Fields To Model ComponentsAssigning COBie Data Fields To Model Components

Project Data

FacilityContact

OB

ieee

t FloorSpace

Spatial Data

TypeComponent

Building Components

CO

Sh ZoneComponent

t Com

pone

nt

Project level data – not model components

Space/Room Components 3D Components

Rev

i

•Add Information to COBiespreadsheet

• COBie attributes assigned to spaces with Revit room schedule creation

• Project team to determine the components to be tracked for COBie (not all! e.g. no mullions)

• Manufacturers are developing objects (Autodesk SEEK) stillobjects (Autodesk SEEK) - still preliminary. Data attributes -TBD in future.

COBie Data Structure ‐ SpatialAssigning COBie Data Fields To Model ComponentsAssigning COBie Data Fields To Model Components

2nd FloorFloor

•Name

Room 201

Space

R ID

Sprinkler Zone 3

Zone

•Room 202•Gross Area•Room ID•Name•Space Type•Area

•Room 202•Room 203•Room 204

COBie Data Structure ‐ AssetsAssigning COBie Data Fields To Model ComponentsAssigning COBie Data Fields To Model Components

ComponentA t T /ID

SystemVAV2 1•Asset Tag/ID

•Serial Number•Date Installed

•VAV2-1•DUCT2-12•DUCT2-15•DIFF435

Asset Type

•Manufacturer•Model No.•Warranty Duration

Asset Creation

Asset Visualization

Asset Reconciliation

Building O&M Workflows

BIM for Operations

•Data Strategy •Begin with the end in mind•Begin with the end in mind

•Life Cycle Data Mix

•BIM for “Batch” Data Processing •SEPS•COBIE •Maximo

•Slim BIM for Synchronous Info

THANK YOUTHANK YOU

QUESTIONS ???

RESOURCE LINKS

‐American Institute of Architects – Document E‐202http://www aia org/release 092408 condocshttp://www.aia.org/release_092408_condocs

‐Penn State University – Project Execution Planning Guidehtt // d / / i /BIME /d l dhttp://www.engr.psu.edu/ae/cic/BIMEx/download.aspx

‐National BIM Standard United States v1.0http://www.wbdg.org/bim/nbims.php

‐Construction Operations Building Information Exchange (COBiE)Construction Operations Building Information Exchange (COBiE)http://www.wbdg.org/resources/cobie.php

CONTACT

‐Brian Ward, AIA, Michael Baker Jr. Inc.b d@ b [email protected]

‐David Rushforth PE Vandeweil Engineers‐David Rushforth, PE, Vandeweil [email protected]

‐John [email protected]