Download - Experimental BIM Use Comparison on Stanford Hospital Cath Labs

Stanford Cath Labs 7, 9, & 10 Numeric results of CAD vs. BIM to 2” vs. full BIM

Jason Holbrook

David Denysenko

Eric Peabody

7

9

10

Experimental Controls

BIM Use Area* Start** ArchitectCath Lab 7

CAD 720 SF 2006

Cath Lab 9

2” Standard

1,173 SF 2009

Cath Lab 10

Everything

1,060 SF 2010

Experimental Variables

*Results expressed per SF to normalize this variable**Cost values escalated to 2010 relative value to normalize this variable

What’s supposedly in it for me?Save up to 23% on project costsComplete project 35% fasterDrop change order rate to <0.1%44% fewer RFIs

The Design Partnership LLP Architects + Planners

What’s supposedly in it for me?23% less $Complete project 35% fasterDrop change order rate to <0.1%44% fewer RFIs


What’s supposedly in it for me?Save up to 23% on project costs

35% fasterDrop change order rate to <0.1%44% fewer RFIs


What’s supposedly in it for me?Save up to 23% on project costsComplete project 35% faster

Changes to <0.1%

44% fewer RFIs


What’s supposedly in it for me?Save up to 23% on project costsComplete project 35% fasterDrop change order rate to <0.1%

44% fewer RFIs


Cath Lab 7CAD Only


Cath Lab 7: Siemens Biplane Cath LabProject Area: 720 Gross Square Feet Construction Start: 2006

Procedure Room: 600 Net Square Feet BIM Use: None


(E) CAD V.I.F. (N) CAD Construction

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”


Cath Lab 9: Siemens Biplane Hybrid ORProject Area: 1,173 Gross Square Feet Construction Start: 2009

Procedure Room: 821 Net Square Feet BIM Use: Model to 2”

3D Scan (E) Model (N) Model

Construction




Construction

Cath Lab 10BIM Everything


Cath Lab 10: Siemens Biplane Pediatric Cath LabProject Area: 1060 Gross Square Feet Construction Start: 2010

Procedure Room: 717 Net Square Feet BIM Use: Model Everything


Construction


Results


BIM Use % from CAD

Cath Lab 7

CAD

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 TotalCath Lab 7

CAD 12.4%

Cath Lab 9

2” Standard

8.1%

Cath Lab 10

Everything

<0.1%The Design Partnership LLP Architects + Planners

*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 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%) (22.0%) (23.3%)Cath Lab 10

1.6% 18.5% (4.1%) (18.6%) (17.9%)

ConclusionsSave up to 23% on project costsComplete project 35% fasterDrop change order rate to <0.1%44% fewer RFIs


Thanks. Questions?

Jason [email protected] 721-1928

David [email protected] 736-7546

Eric [email protected] 777-3737