revit for small projects: is it worth the effort?
DESCRIPTION
Understand how to implement BIM at the appropriate scale for projects. Evaluate the tools available for a successful small project in BIM. Leverage BIM data to coordinate with the design and construction team. Understand the cost saving potential for small projectsTRANSCRIPT
REVIT FOR SMALL PROJECTSIs it worth the effort?
?
Eric Peabody Elizabeth Cox
OBJECTIVES1. Understand how to implement BIM at
the appropriate scale for projects
2. Evaluate the tools available for a successful small project in BIM
3. Leverage BIM data to coordinate with the design and construction team
4. Understand the cost saving potential for small projects
WHY?● Draw Faster!
Drawing 1 line is faster than drawing two
Detail drafting faster with families and keynotes
Don’t commit to full 3D BIM - blend BIM & CAD
● Auto-Pilot!Elevation to plan coordination
Automatic drawing set creation
Automatic egress and other calcs
Free 3D = better communication
● Be Coordinated!For projects with complex overhead - 3D coordination
For extreme projects - 3D laser scanning
DrawFaster!
Drawing one line is faster than
drawing two
120 BIM objects
2002 CAD objects
Don’t commit to
full 3D BIM
Blend BIM & CAD
Auto-Pilot!
Autodrawing
coordination
Auto drawing
set creation
Automatic egress calculations…
…to automatic acoustic calculations
Free 3D
BeCoordinated!
For projects with complex overhead…
For complex
overhead…
Automatic spatial coordination
Where is the coordination error?
Structural Plan
Mechanical Plan
For extremely complex
overhead…
3D Scan (E) Model (N) Model Construction
3D Scan (E) Model (N) Model Construction
3D Scan (E) Model (N) Model Construction
3D Scan (E) Model (N) Model Construction
CASE STUDIES● Tiny: SFMH Blood Analyzers
● Small: BLINK Optometry
● Complex: UCSF MPOE
● Extreme: UCSF OR 1 & 11
● Extreme: UCSF OR7 & 29
Tiny Project
St Francis Memorial Hospital Blood
Analyzers
● Drawing 1 line faster
● Detail components
● BIM + CAD
● Auto Drawing Coord.
Tiny Project
St Francis Memorial Hospital Blood
Analyzers
● Drawing 1 line faster
● Detail components
● BIM + CAD
● Auto Drawing Coord.
Tiny Project
St Francis Memorial Hospital Blood
Analyzers
● Drawing 1 line faster
● Detail components
● BIM + CAD
● Auto Drawing Coord.
Small ProjectBlink Optometry
● Drawing 1 line faster
● Detail components
● 2D & 3D BIM
● Auto Drawing Coord.
● Auto Egress Calcs
● Free 3D
Small ProjectBlink Optometry
● Drawing 1 line faster
● Detail components
● 2D & 3D BIM
● Auto Drawing Coord.
● Auto Egress Calcs
● Free 3D
Small ProjectBlink Optometry
● Drawing 1 line faster
● Detail components
● 2D & 3D BIM
● Auto Drawing Coord.
● Auto Egress Calcs
● Free 3D
Complex Project
UC San Francisco MPOE & MDF
● Drawing 1 line faster
● Detail components
● Auto Drawing Coord.
● Auto Egress Calcs
● Free 3D
● 3D Coordination
Complex Project
UC San Francisco MPOE & MDF
● Drawing 1 line faster
● Detail components
● Auto Drawing Coord.
● Auto Egress Calcs
● Free 3D
● 3D Coordination
Extreme Project
UC San Francisco OR 1 & OR 11
● Drawing 1 line faster
● Detail components
● Auto Drawing Coord.
● Auto Egress Calcs
● Free 3D
● 3D Coordination
● 3D Laser Scanning
Laser Scanning
Modeling – Revit and Navisworks
Tight Coordination
Extreme Project
UC San Francisco OR 7 & OR 29
● Drawing 1 line faster
● Detail components
● Auto Drawing Coord.
● Auto Egress Calcs
● Free 3D
● 3D Coordination
● 3D Laser Scanning
Detailed Modeling for Coordination
Regular Design Team Clash Detection Meetings
Planning and Visualization
PROOFThe Stanford Cath Lab Experiment
● Cath Lab 7: CAD
● Cath Lab 9: Standard BIM
● Cath Lab 10: Extreme BIM
● Financial Results
(E) CAD V.I.F. (N) CAD Construction
Cath Lab 7All CAD
“”
The delay was caused…by the over-head structural and M/E/P/FP not being coordinated. The majority of the overhead had to be re-designed.
DPR Construction
Cath Lab 9BIM to 2”
3D Scan (E) Model (N) Model Construction
Cath Lab 10
All BIM
3D Scan (E) Model (N) Model Construction
BIM Use % from CAD
Cath Lab 7 CAD Baseline
Cath Lab 9 2” Standard -15.0%
Cath Lab 10 Everything -4.1%
Construction Cost
Change Order Cost
*All figures in 2010 Relative Value
BIM Use % of Total
Cath Lab 7 CAD 12.4%
Cath Lab 9 2” Standard 8.1%
Cath Lab 10 Everything <0.1%
*All figures in 2010 Relative Value
BIM Use Construction Days/SF % from CAD
Cath Lab 7 CAD 8.40 mo 0.23 D/SF
Cath Lab 9 2” Standard 8.50 mo 0.15 D/SF -34.8%
Cath Lab 10 Everything 8.45 mo 0.16 D/SF -30.4%
Construction Schedule
All Costs*
* All costs normalized to 2010 dollars** All design professional fees, including non-BIM fees*** Cath lab contribution margin of ~$8,000 per day
Survey All Services** Construction $ Margin*** Total
Cath Lab 7 18.5% 18.5%
Cath Lab 9 1.6% 27.3% (15.0%) (48.5%) (35.4%)
Cath Lab 10 1.6% 18.5% (4.1%) (54.7%) (34.6%)
CONCLUSION1. The extent of BIM tools used can vary
by the needs of the project
2. Lots of benefits to using BIM● Draw Faster!
● Auto-Pilot!
● Be Coordinated!
3. Model objects down to 1½” for clash detection laser scanning
4. Reduce cost, change order rate, schedule, and save owners money
Eric Peabody Elizabeth Cox
THANKS! THANKS!
Room designed by Tiago Dos Reis Rodrigues from The Noun ProjectBuilding designed by Antonis Makriyannis from The Noun Project