sami boulos construction management faculty consultant: dr. riley 3-d modeling: the advantages and...

Sami BoulosConstruction ManagementFaculty Consultant: Dr. Riley

3-D Modeling:The Advantages and Disadvantages

of a BIM Resource

The Carl J. & Ruth Shapiro Cardiovascular Center The Carl J. & Ruth Shapiro Cardiovascular Center at Brigham & Women’s Hospitalat Brigham & Women’s Hospital Boston, MA Boston, MA

Sami Boulos Construction Management

Faculty Consultant: Dr. Riley

Credits/Acknowledgements

Project Introduction

Depth Topic – Building Information Modeling

Breadth Topics ◦ Acoustical Study◦ Building Envelope Study

Questions & Answers




Size: 450,000 SF◦ 10 stories above grade,

13 total◦ State-of-the-art facility;

going for LEED™ Silver rating

Total cost: $230 Million Construction:

◦ Start: October 2005◦ Complete: April 2008

Location: Boston◦ Neighbors Dana Farber Cancer

Institute and Harvard Medical School

Owner-

Partners Healthcare System

CM –

William A. Berry & Son, Inc.

Architect –

Cannon Design and

Chan Krieger & Associates

Structural Engr –

McNamara/Salvia Inc.

MEP/Fire Protection –

BR+A, Bard Rao and Athanas

RW Sullivan, Inc.




Structural◦ Steel frame with Concrete

caissons, piles, retention foundation walls

Mechanical◦ 19 Air handlers provide

640,300 CFM total◦ (3) 800-ton Cooling Towers

provide 4,800 GPM each Electrical

◦ 15 kV switchgear for both 480/277V and 208/120 V systems

◦ Diesel generators for emergency power

134 new patient rooms for Brigham &

Women’s Hospital

Location provides for medical

students a “research campus” Floors 1-3:

Administrative offices Mixed uses, café space & shopping

Floor 4 and 4M: Mechanical/Electrical equipment

Floors 5-10: Patient Rooms

Delivery Method: CM @ Risk




Overview

Criteria for success

BIM/ 3D modeling Synopsis

◦ External Research

◦ Project details

3D modeling Advantages

3D modeling Disadvantages

Conclusion/Recommendation




Why BIM?

◦ PACE Roundtable – One of 3 major industry issues today

◦ The Future of the industry

◦ Personal Interest

Project Specific

◦ High Profile Project – familiar owner

◦ High Level of MEP Coordination




BIM today◦ Used predominantly for 3D coordination,

especially with the MEP trades◦ Only certain members of industry utilize BIM tools,

i.e. architects, MEPs, and CMs

Problem Statement◦ BIM tools growing in the industry today, but

opposition still exists, causing the BIM push to stagnate and not reach its full potential.




Provide some advantages and disadvantages to the BIM tools in the industry today

Relate BIM to this project◦ Which tool(s) of BIM used? ◦ Successful/unsuccessful with that tool?◦ Provide opinions and illustrate research

Come to a conclusion and recommendation◦ Is it logical?




BIM ≠ 3D Modeling◦ 2 separate concepts, but tools similar◦ 3D model is an aspect of BIM◦ BIM model incorporates:

3D representation of 2D drawing Cost and schedule data Materials Information

Future of BIM◦ GSA: BIM Standard procedures for all new federal projects◦ Increasing demand from owners◦ Provides for faster, better quality projects at lower costs




BIM Drawbacks◦ Industry

Some trades and companies not applying 3D models to projects

New contract models not being written, legal ramifications not addressed

What happens to Design-Bid-Build process?◦ Experience vs. Inexperience

New workforce members need 3D models to visualize 2D drawings

Veteran members can already “see” in 3D.




Industry Poll◦ Research of articles and survey of AE Construction

Mentors revealed: BIM becoming more prominent part of projects Software used for modeling:

Autodesk REVIT and REVIT Structural AutoCAD 3D, AutoCAD MEP Innovaya – for Estimating Microstation

Project Specific◦ Fully Integrated BIM was not used

3D Model for MEP coordination◦ Survey of Berry staff results

Berry incorporating VICO 5D Presenter - MIT




Advantages Disadvantages

Early clash detection for MEP trades High initial cost and training

Better, simpler visualization of ideas One model or several models, and if several, can they work together?

Increase quality of work through entire team having better knowledge of the project

Contractual obligations unclear; who provides the model?

Compatibility of Technologies Compatibility of Technologies

When done correctly, BIM can elicit a higher quality building faster and at a lower cost

Ownership of BIM model after project completion; to the owner, architect, or facility maintenance?

Generational Gap – the experienced team members do not need a 3D model to visualize the 2D drawings, they already think in 3D.

No metrics exist to evaluate success or failure of BIM, nor to assess the cost savings of BIM




Schedule Implications Use of BIM = up front

time to make model Time savings via early

problem ID

One major component against BIM is Cost

Software/technology Employee to operate Exact cost unknown for

Berry, but 1-2 employees operate and maintain the models for entire company

Value Added Applying more efforts

with 3D modeling and BIM gives a much better quality project

More knowledge about project, better




BIM and 3D Modeling will lead the construction industry of the future

Efforts by GSA, companies like Berry, PSU AE Better visualization = better projects

For the Carl J. & Ruth Shapiro Project◦ 3D modeling only for MEP coordination◦ Breadth topics to discuss any further 3D

endeavors




Industry: continue improvements via BIM◦ More integration of 3D models:

Sequencing of project phases – Excavation Superstructure Building Envelope MEP Finishes

3D models to accompany coordination drawings As-Builts in 3D for maintenance staff of building

Project Recommendation◦ Follows Breadth analyses




Analysis 1 – Acoustical Study 10th floor VIP rooms◦ Existing Conditions/ Success Criteria◦ Redesign and calculations◦ Results and conclusion◦ Recommendation

Analysis 2 – Building Envelope◦ Existing Conditions and Success Criteria◦ Redesign and calculations◦ Results and conclusion◦ Recommendation




10th Floor – VIP Patient Rooms◦ Sound sources include Air Handling

Units, Cooling Towers, Compressors

◦ Strict rules for sound attenuation in hospitals

◦ Research if acoustical system over-designed for space. Acoustician = Cavanaugh & Tocci

Associates, Inc.Picture of Rooftop AHUs and Cooling Towers




Over-designed? Examined the system as

installed Trane Acoustical Program

used to estimate acoustical values for Source dB. NC>65




Conclusion Acoustical Design ok Meets required design criteria by owner Added challenge due to restriction of duct-lined

insulation Recommendation

Use design by Acoustician

BIM Consideration Research into incorporating TAP as part of BIM




Curtainwall of glass, aluminum Random pattern aesthetic on exterior of building Original design: 9 different types of glass and

aluminum Architect Design Change: 43 different types of

glass and aluminum Research:

Reason for the change Implications on the project Conclusions




Justification◦ Was there structural

considerations that prompted change in design? Conversation with the

Project Manager and Curtainwall contractor. Change for aesthetics only.

View of existing curtainwall pattern




Implications:◦ Mechanical System Impact

◦ Aesthetic effect made

◦ Cost, Schedule, Value-Added




Mechanical System Effect Change to design alter % glass to envelope

Increase glass = increase solar gain to space/building

Trane Trace calculation Simple building envelope calculation to test solar gain

effect of design change.




Effect of % Glass on Mechanical System◦ The higher % glass, the more heating or cooling needed

in a space = higher cost and more energy consumption

35% glass

55% glass




Aesthetic Effect◦ Desire to make exterior

pattern more random Utilize many tints of glass

& Aluminum

◦ Effect not attained after construction of design change




Cost, Schedule, Value◦ Cost

Approx. $2 Million for 43 glass types Increased Heating/Cooling costs, energy

consumption

◦ Project Schedule not affected

◦ Value added: In theory yes because of random pattern In actuality, no distinguishable change




Conclusion◦ Architect’s change achieved minimal aesthetic

improvement Cost increase, no schedule impact, minimal value added

Recommendation◦ Return to original design◦ Cost savings > $2 million

BIM Consideration A 3D model would have been too precise to illustrate

the aesthetic differential. BIM model to illustrate solar calculations

Not used on this project, but capability exists in industry




Many issues, many solutions

One change affects many components

3D Modeling becoming the norm

sami boulos construction management faculty consultant: dr. riley 3-d modeling: the advantages and...

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