building information modeling

Building Information Modeling

What Does it Mean for the Electrical Engineer?

John Griffiths PE Geoff Gunn PE Anthony Fresquez

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Presentation Overview

� BIM Overview

� BIM in Detail

� BIM Project Management

� Question and Answer

� BIM Demonstration

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Evolution

4D, 5D, ?

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� What is BIM?

� Building Information Modeling

“digital representation of physical and functional characteristics of a facility”

National Institute of Building Sciences, Model Standard 22 (2007)

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� What is BIM?

� Building Information Modeling

� BIM means radically different things to different people

� Use often limited to 3D drafting

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Building Information Modeling

Load, voltage, type

3D - size, location, routing

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BIM to an Owner

� Opportunity to take advantage of new technology and skills to add value to their projects

- Build more for less- Opportunity Reduce Risk- Control Cost- Manage Schedule- Use BIM model throughout the life of the building

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BIM to a Design Engineer

� Allow the engineer to combine all the design process and information a single model to streamline the creation and production of designs

� Better coordinated designs� Faster response to design changes� Increase accuracy (schedules)� Sustainability

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BIM to a Contractor

� Allows the contractor to improve efficiencies and streamline the construction process

- Encourages collaboration- Reduce risk and improve construction predictability- Allows for better examination of alternates- More efficient layouts and networks- Compatible with LEAN

“most effective when contractor engaged early and often in the design phase”

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Turning Expectations into Reality

� Understand the Value Point for all stakeholders

� Clearly define expectations and deliverables early in process

� Be realistic about capabilities and limitations of the BIM delivery method

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Turning Expectations into Reality

� Clearly define expectations and deliverables early in process

� Understand the Value Point for all stakeholders

� Be realistic about capabilities and limitations of the BIM delivery method

well….doesn't Revit do that?

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Define Expectations

“This project will utilize Building Information Management (BIM) strategies and protocols, to assist in the design and construction process”

Extract from a recent RFP

Big BIM or Little BIM?

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Standards & Guidelines

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BIM – In Detail

� Geoff Gunn PE

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BIM – In Detail

� Capabilities Overview

� “How BIM’s supposed to work”

� Case Study

� “How BIM actually works”

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BIM – Software Setup

Electrical Project Database (EPD)

Smart Panels Drawing

Power & Signal

Lighting Fire Alarm


ANTHONY TO CHANGE

AutoCAD MEP Revit MEP

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BIM – 3D Modeling

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BIM – Intelligent Devices

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BIM - Really Intelligent Devices

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BIM - Intelligent Device Circuiting

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BIM - Intelligent Drawings

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BIM - Intelligent Panels


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BIM - Intelligent Schedules� Generates Panelboard schedules that are directly linked to your design.

� As your design changes schedules are automatically updated`

� Reduces potential for errors

Architects: Anshen + Allen

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BIM – Case Study – UCSF Medical Center

Architects: Stantec

HospitalOutpatient

BuildingFuture

Outpatient

Cancer

Building

Energy Center

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BIM – Case Study – UCSF Medical Center

Energy Center

� Statistics� 3 Buildings� Hospital – 289 patient beds� Outpatient building� Energy Center� Total Building Area – 878,000 sf

� Total Electrical Load – 16.5MW

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BIM – Case Study – Project Timeline� 2007 Project Start

� SD phase completed� Design started in AutoCAD MEP 2008

� 2008� DD phase completed

� 2009� 50% CD completed� Project “upgraded” to AutoCAD MEP 2010

� 2010� 100% CD completed

� 2011� OSHPD permit received

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BIM – Case Study – File Setup

� Working drawings limited to

approx 20k sf due to

computer speed.

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BIM – Case Study – File Setup

Electrical Project Database (EPD)and Smart Panels

24Power

Drawings

23Lighting Drawings

Hospital


17Power

Drawings

15Lighting Drawings

Hospital


3Power

Drawings

3Lighting Drawings

Hospital

� No way to link EPDs together from each building

� 88 total BIM drawings

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BIM – Case Study – Complications

� AutoCAD MEP 2008� Our version was heavily customized in order to realize

maximum BIM potential� Maximum size of EPD file due to 64-bit computers not being

supported

� AutoCAD MEP 2010� Automatic Transfer Switches are not supported� Panelboard schedules did not meet OSHPD requirements out

of the box� No way to link EPD files from different projects� Some circuit loads were mis-recorded

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BIM – Case Study – Lessons Learned

� Proper project setup essential� All devices, demand factor styles, file structures, etc. should

be properly setup before any circuiting is started

� Slow and Steady work flow� Adding extra BIM technicians and Engineers to meet a

deadline often results in crashes or corrupted files

� Hardware and Software limitations� Limits due to hardware or software performance should be

reviewed in advance

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BIM – Management

Anthony Fresquez

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BIM ManagementManaging Arup BIM Team

4 Electrical BIM Technicians3 Mechanical BIM Technicians3 plumbing BIM Technicians4 Structural BIM Technicians90+ SMEP Engineers

University of California, Davis Physical Sciences Expansion – Perkins & Will Architects

Release 9

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BIM Management

�Work Culture�Communication�Challenges�Time Management�Software�Hardware�Next Steps

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Work Culture

� Transition from 2D CAD to 3D Modeling

� Performing design within software

� Increased roles and responsibility performing 3D coordination

� Due to design skill specialization staff cannot switch easily between disciplines

� Hiring profile change seeking people with design experience

� Recognizing some people may not make the transition

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Communication� Communication is critical and occurs at a higher level within

design team.- Entire team must understand engineering concepts - Team members are not easily replaceable.

� Model is very sensitive, because it is dynamic, which necessitates more reviews and back checks.

� Not just hard clashes, also soft checking

Demand Factors, Loads, Voltage

Challenges

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BIM Management

� Time management� Training

- Formal training is recommended. Train the trainer method not beneficial.

� Resourcing- Plan ahead to avoid last minute allocation of resources as it’s

difficult to find contract resources with BIM skills. � Workflow

- Multiple users saving to EPD file caused software to crash with AutoCAD MEP 2010. Issued resolved with AutoCAD MEP 2011

� Trouble shooting - Plan on it you’re going to spend plenty of time solving problems,

especially around deadlines.

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BIM Management

� Software� Constantly releasing new versions

- Autodesk has committed to releasing a new version of the every year which can present a problem as projects can continue for 5+ years

- Difficulty upgrading to the new release as upgrading to new could impact the display of AEC objects or new drawing format.

� Licenses, various platforms, support- Distributed server configuration - Suite base products AutoCAD and Revit Structure, AutoCAD

MEP and Revit MEP plus we also use Navisworks. - Autodesk Subscription online support- Autodesk reseller ‘Ideate’ training, user groups and support.

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BIM Management

� Hardware� HP Z400 Workstation, Genuine Windows® 7 Professional 64-bit OS10,000RPM 320gb Hard DriveIntel® Xeon® 23350 3.06, 8MB/1066 QC CPU16GB (4x4gb) DDR3-1333 MHz/PC3 10600-unbuffered- ECC RAM NVIDIA Quadro FX3800 1GB Graphics Card

� Dual Monitors is essential when working within the model environment.

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Next Steps� Revit MEP

- Recognized as industry standard for design firms

� Capture I in BIM- Information is key - Superior scheduling functionally - Single model allows better design processes

� More capabilities - Ideal workflow with architectural revit model- More efficient 3D coordination and production tool- Content development from manufacturers

� Link to e-Specs- Interfaces with Revit's parametric database, instantly updating your project

specifications to the requirements of the building model

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Building and Maintaining Relationships

Beta-Testing program:- Revit Structure- AutoCAD MEP- Revit MEP- Navisworks- Microstation Structural Triforma

�Working with Software Designer to ensure software meets the demands of the design industry

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Summary

� Great potential� Increased accuracy� Increased productivity

� Major Challenges� Steep learning curve� High entry cost

- Training - Software & Hardware

� BIM is here to stay!

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Questions and Comments

[email protected]@[email protected]

building information modeling

Engineering