Spar 2010 Presentation

1. LiDAR – BIM
Exceeding our Clients Needs
Tina Murphy, P.E.
February 9, 2010

2. Agenda
• Motivation
• Adopting BIM
• Pilot Project
• Future Value of BIM

3. Motivation
Municipal Client’s Problem
Demand on
Regulatory time line in which to comply Capacity
Time Required to complete traditional Design Bid Build process
Permitting Engineering Bid Construction and
re-engineering

4. Motivation
Municipal Client’s Solution
Demand on
Regulatory time line in which to comply Capacity
Time Required to complete Design
Build process
60% Plans break ground
Permitting Engineering
Construction and re-engineering

5. Motivation
Municipal Client’s Solution
Municipalities are looking to Design Build relationships to meet their
Regulatory requirements
What does Design Build give our client?
• Single point accountability
• Time Savings Scope
• Costs Savings
Design Build costs our client in the
form of trade-off among scope,
schedule, and quality. Schedule Costs

6. Adopting BIM
Our Solution
BIM is our foundation for Virtual
Design and Construction (VDC) Scope
What does VDC give our client?
It gives….
• Single point accountability
• Increased time Savings
• Increased cost Savings Schedule Costs
• Minimized the trade-off
among scope, schedule, and
quality (change orders)
• Useable final product

7. Pilot Project
• Pilot project was the rehabilitation of a
32 MGD Water Treatment Plant
constructed in 1940s
– Most of the structures and equipment are still original
– Approximately 80 projects totaling a construction
estimate of $70 million
• Pilot completed in summer 2009
• Full company roll out end of 2010

8. Pilot Project - Expectations
• Revit MEP = BIM = More Software
©
• Insert LiDAR into Revit
©
• Complete virtual model
• Easily document the process
• Be able to calculate Return on
Investment (ROI)

9. Pilot Project - The Starting Point
• The initial design effort began with as-built
plans and site investigations
– Construction
plans from the
1940s
– Site photos

10. Pilot Project - Data Acquisition
using LiDAR
• LiDAR was employed to capture the
intricate network of pipes and mechanical
equipment

11. Pilot Project - 3D Modeling with
Revit ©
• The building structure was modeled in Revit
MEP from 1940s construction plans
©
• The Revit model was used as a base for
©
the mechanical model being developed from
3D laser scanning effort

12. Pilot Project - Data Acquisition
using LiDAR
• The scan data was delivered as TruView ©
and 3D AutoCAD files
©

13. Pilot Project -TruView
• TruView was used to validate data in CAD
Model
• Dimension miscellaneous data
• Replaced the printed plans
• Discovery tool
– Modifications occurring during scan
– Some of the columns interfered with the proposed
construction
– Located an access hatch to be used during construction
– Penetrations through ceiling for conduit

14. Pilot Project - TruView
Modifications occurring during scan

15. Pilot Project -TruView
Located access hatch

16. Pilot Project - TruView
Penetrations through ceiling for conduit

17. Pilot Project - The Complete As-
Built
• The 3D CAD model was then referenced
into the Revit model
©

18. Pilot Project - deliverable
• Tying into existing equipment was done
with greater confidence
• Traditional design deliverables were easily
created

19. Pilot Project - Deliverable
• The completed Revit model was used to
©
print the 3D model

20. Pilot Project - Challenges
• Communication barriers
– Engineer misunderstanding
– Unrealistic client expectations
– Revit expert had no experience with piping
– Vendors are confused / not willing to give up information
• Revit MEP does not equal BIM
©

21. Pilot Project - Challenges
• LiDAR data does not directly insert into
Revit ©
– Pipe runs had to be re-digitized in Revit
– Revit MEP© would kick back error messages when we
tried to duplicate existing conditions
• There was no easy or obvious way to
measure ROI or soft cost savings

22. Pilot Project - Discoveries
• The whole process was more
complicated than originally assumed
• Support from sub-consultant exceeded
expectations
• Greater flexibility to work on the
project – access to all data in and out
of the office.
• We are confident in the measurements
and not hoping they are right

23. Pilot Project - Lessons Learned
• True and accurate as-builts are not
entirely desirable
• When communicating to new clients
we need to show them not tell them
• Standards, details, and project work
flow need to be recreated
• BIM adoption needs to be done slowly
and carefully

24. Future value of BIM
BIM is the foundation of Virtual Design
and Construction
BIM is our foundation for Virtual Design and Construction (VDC)
What does VDC give our client?
• Single point accountability
• Increased time savings
• Increased cost savings
• Minimizes the trade-off among scope, schedule, and
quality
• Useable final product

25. Future value of BIM
3D model
Facilities Cost
Management Estimating
Virtual
Design and
Construction
Virtual Schedule
Mockups Integration
Facilities
Analysis