Mortenson Construction uses laser scanning for construction projects to create 3D models of existing conditions for coordination and planning. Tim Schubert presented on Mortenson's laser scanning process, including planning scans, capturing point clouds, processing the data, and delivering 3D models and other design deliverables. Applications include documenting existing buildings, coordination of mechanical, electrical and plumbing systems, historic preservation, investigating construction issues, and verifying long-lead items. Lessons learned included proper targeting and registration of scans along with limitations of the technology. The value added is improved coordination and issue identification to reduce costs and schedule impacts.

1. Mortenson Laser Scanning:
Practical Uses for Construction
Applications
Presenter:
Tim Schubert
Integrated Construction Manager
Mortenson Construction
October 14th, 2014

2. Introduction Video

3. Agenda
• Brief Mortenson Introduction & Laser Scanning
Overview
• Define Practical Uses
• Share Process Maps
• Share current examples / share best practices / lessons
learned
• How scanning will add value to your project
• What’s in the future for Reality Capture
• What steps you need to take to make Laser Scanning a
reality on your project

4. Mortenson Construction
• Family Ownedfirm founded in 1954
• Building in Chicagofor over 25 Years
• 26thLargest Construction Firm (ENR)
• $3 Billion annual revenues
• Zero lost time injuries in 2013

5. Laser Scanning - Definition
• 3D Laser Scanning is a means of
rapidly collecting detailed and
accurate as-built data.
• A 3D Laser Scanner emits a laser
beam that “sweeps across” a
target object gathering millions of
measurements.
• This data can be viewed,
navigated and analyzedmuch like
a 3D model created in a traditional
CAD system.

6. Why does Mortenson Laser Scan???
Scanning is the most time effective way of capturing a three –
dimensional moment of existing objects and structures.
THIS
vs
THIS

7. Why does Mortenson model
existing conditions???
Started with only Point
Cloud –Modeling with
indexed point cloud in
Revit Structure
Finished product
Converted into
BIM – Rendered
using Revit

8. This is how Mortenson is leading the
Construction Industry in Laser Scanning…

9. Laser Scanning & Software Required
Autodesk Navisworks Autodesk
FARO Scene Revit Google Sketch-UP w
Indigo Render
Navisworks

10. Process Maps

11. Workflow

12. Integrated Work Plan
• Plan the work
• Determine how many
setups are required
• Determine with the
client what deliverable
is required (Point Cloud
/ Revit model /
Navisworks model)
• Review plan with the
design team
• WORK THE PLAN!

13. Estimate Example
• IWP determines how much time
will be required to complete scan
project.
•Communication tool for
scheduling craft workers and
ordering equipment from the
yard
• Proper planning for travel and
gives the internal client idea of
what travel will cost
•Review the estimate with team
before approval

14. Project Geography
• Scanned over 70
projects for internal
projects, architects,
and engineering
firms
•We have traveled to
over 12 different
states
United Airlines
Allstate
Crate & Barrel
Northwestern University
Chicago Bears
Buffalo Sabres
University of Arizona
Charles Schwab
Northwest Mutual Bank

15. Complexity Scale
• Planning = Logistics,
scheduling, travel,
estimating, & meetings
• Capture = Targeting,
survey, building control,
& scanning
• Processing =
Registration, stitching,
indexing into Revit, &
uploading to WebShare
• Delivering = Modeling,
animating, and rendering
COMPLEXITY SCALE
PLANNING
CAPTURE
PROCESSING
DELIVERING
LOW HIGH

16. Business Development
Design Deliverables
• Revit Renderings
• 3D Revit Arch / Struct Model
• Navisworks model (visualization)
• FARO Point Cloud
(measurable photo)
Project Pursuit Benefits
• Construction executives have high
powered images for presentations
• Architect has access to all existing
dimensions
• Supt. has an exact model of existing
conditions and can
start to plan the work
(4D simulation)
Revit Rendering with Point Cloud Data
COMPLEXITY
Planning
Capture
Processing
Delivering
LOW HIGH
Pretty Pictures for the
Marketing Department

17. Business Development
Business
Development pursuit
WIN! $80 Million!
15 Scans totaling
about only three
hours of scanning
time!
COMPLEXITY
Planning
Capture
Processing
Delivering
LOW HIGH
McKale Arena, Tucson AZ

18. Existing Condition As-Builts
Design Deliverables
• 3D Revit MEP model
• 3D Revit Arch / Struct Model
• Navisworksmodel (visualization)
• FARO Point Cloud
(measurable photo)
Project Benefits
• MEP Engineers able to create much
more accurate documents
• Architect has access to all existing
dimensions
• Supt. has an exact model of existing
conditions and can
start to plan the work
(4D simulation)
NavisworksModel with Point Cloud Data
COMPLEXITY
Planning
Capture
Processing
Delivering
LOW HIGH
Revit MEP Model

19. Existing Conditions As-Builts
• Existing Condition Scanning –OSF Energy
Center Peoria, Illinois
• 85 Scans totaling about three days to
capture point cloud
• 190 hours of modeling time
COMPLEXITY
Planning
Capture
Processing
Delivering
LOW HIGH
OSF Saint Francis Mecdical Center EC2,
Peoria, IL

20. Laser Scanning Practical Uses – Existing
Conditions
• Existing Condition Scanning – College of
Lake County Grayslake, Illinois
• Over 800 scans 97.2GB raw data
• Project objective: Produce Model Arch /
MEP for Architect & MEP Design Team
COMPLEXITY
Planning
Capture
Processing
Delivering
LOW HIGH

21. Existing Conditions - Coordination
Design Deliverables
• 3D Revit MEP model
• 3D Revit Arch / StructModel
• Navisworks model (visualization)
• FARO Point Cloud
(measurable photo)
Project Benefits
• Quickly document existing
conditions after demolition
• Accurate as-built model of existing
MEPs to remain
• 3D MEP Coordination with accurate
as-built information (reduces re-work)
Revit MEP Model w/ Point Cloud Data – Existing to Remain
COMPLEXITY
Planning
Capture
Processing
Delivering
LOW HIGH
Navisworks
Coordination Model

22. Historic Preservation
Design Deliverables
• FARO Point Cloud
(measurable photo)
• PDF w/ Links to FARO Scene
• Navisworksmodel (visualization)
Project Benefits
• Accurate Model of Detailed Building
• Builder has existing conditions record of
building before start of construction
activities
• Record Documentation of Historical
Building
COMPLEXITY
University of Chicago – Admin
Bldg. Planning Chicago, Illinois
Capture
Processing
Delivering
LOW HIGH

23. New Construction As-Builts & Event
Investigations
Design Deliverables
• Navisworks Model
• FARO Point Cloud
(measurable photo)
Project Benefits
• Design Team was able to accurately
determine the position of the cast in
place concrete cores
• Structural Engineer was able to identity
the point loads and modify the existing
structure
• Project team compared as-built point
cloud to coordination model to identify
the delta (variance)
HARBOR
center
Buffalo,
NY
Coordination Model w/ Point
Cloud of As-Built Structure
COMPLEXITY
Planning
Capture
Processing
Delivering
LOW HIGH

24. New Construction As-Builts & Event
Investigations
ELEV-11
Autodesk Point Layout - Scan Analysis Core

25. Long Lead Item -
Verification
Design Deliverables
• FARO Point Cloud
(measurable photo)
• Navisworksmodel (visualization)
Project Benefits
• Verified as-built conditions for
long lead item stair glass side
rails
• Team was able to make
adjustments to stairs in the
field using the scan data.
• Able to the fix the problem
before it became lost time to
the construction schedule!
Charles Schwab – Denver, CO

26. Webshare – Cloud Computing &
Internet Based Software
• Successful deployment
of cloud based data.
• Reduction in client
interaction with
technology related
issues.
• Secure Direct access to
project data anytime and
anywhere.

27. Third Party Software –Apps

28. Topo & Floor Flatness –Quality Control
Advocate Good Shepherd
Hospital – Lake Barrington,
Illinois

29. Laser Scan Lessons Learned
• Geo-referencing scans / world coordinate systems / ground
truth

30. Laser Scan Lessons Learned
•Targeting & Registration

31. Laser Scan Lessons Learned
• Scan limitations (glass pipe, weather conditions, sun shine, mirrors,
windows, & etc.)
Halas Hall – Lake Forest, Illinois
Confidential Project, Undisclosed Location

32. Laser Scan Lessons Learned
•Super Computer – Required for large scan projects
IBM Thinkstation
12 PROCESSORS
X5660@2.80GHz
98 GB RAM
6TB INTERNAL STORAGE
64 BIT OPERATING
SYSTEM
RAID 1 SERVER
7TB DATA
STORAGE!!
UPS/BATTERY
BACKUP

33. Laser Scan Lessons Learned
•Train end-users on how to leverage data (Webshare)

34. What is the VALUE added to the project???
Mortensen staff worked with
the design and construction
team to verify pipe and
conduit routing in the
model prior to construction,
which saved the project both
time and money. The
accuracy of their model
was very good and the
installation went well and
without issues.
-Richard Vedvik - KJWW

35. Where can I go for Laser Scanning
Services?
• Mortenson Construction-Tim Schubert 847-472-8161
• Discuss local options – there may be a local firm that
offers scanning services. Each market may have
different options.

36. Additional Information –The Manual

37. What Does the Future Hold?
• Auto stitching (Autodesk ReCap Pro)
• Auto geometry recognition (VRMesh)
• Photogrammetry (Autodesk 123D Capture)
• Drone scans of difficult spaces
• Handheld, auto-registration scanners
• Robotic layout

38. Mortenson Laser Scanning:
Practical Uses for Construction Applications
Contact Information
Tim Schubert
Integrated Construction Manager
Mortenson Construction
tim.schubert@mortenson.com
M:773-704-7804
D: 847-472-8161