A presentation describing the benefits of Laser Scanning and BIM (Building Information Modeling) for documenting existing buildings and facilities.

3. OVERVIEW
LASER SCANNING
Gathering data before laser scanning
Equipment
Benefits of Laser Scanning
COACH DELIVERY BUILDING SCAN
Cost – Laser Scan vs Traditional 2D Survey
Benefits of Laser Scanning & BIM
BUILDING INFORMATION MODELING (BIM)
BIM Defined
Benefits
BIM MODELS

4. PROCESS BEFORE
CAD, PDF,
Paper Copy Model Site Verification
Model
Site Verification
Model
Site Verification
Model
Etc…

5. RATIONELLE

6. GATHERING AS-BUILT DATA
BEFORE LASER SCANNING
Tools inadequate for BIM
Problems
Inefficient
Not accurate
Safety – some locations
unsafe to work in or
inaccessible
No data to import into BIM
BIM software = data not
verifiable
RATIONELLE

7. FARO FOCUS OR TRIMBLE TX5 3D
LASER SCANNER
Distance accuracy up to ±2mm
Range from 0.6M up to 120M
Measurement rate up to 976 000
points/second
Integrated camera – photorealistic 3D
3D color scans with up to 70
megapixels resolution
TARGET SPHERES OR SQUARES*
LAPTOP OR TABLET
Allows for remote control of scanner
EQUIPMENT

8. BENEFITS
LASER SCANNING IS EFFICIENT
Scans capture up to 900 000 points
of data per second. A scan can
take as little as 5 minutes.
Less invasive for the client. Can be
done with a 1 or 2 man team.
Safer for the scanning team.
LASER SCANNING IS ACCURATE
Within a 25m radius, each scan point
is accurate to ±2mm.
LASER SCANNING IS DETAILED
Scan resolution can be as detailed
as1 point of data every 3mm.
LASER SCANNING IS 3D
The processed point cloud looks
like an exact 3D replica of the
building or site.
Building Section from Laser Scan

9. Space Schedule
Number Name Space Type Condition Type Area Volume Actual Exhaust Airflow
Specified Airflow
Specified Exhaust Airflow Specified Return Airflow Specified Supply Airflow
101 VEST 1 <Building> Heated and cooled 85 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM
102 CORR. <Building> Heated and cooled 133 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM
103 MEN'S Restrooms Heated and cooled 148 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM
104 STORAGE <Building> Heated and cooled 98 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM
105 WOMEN'S Restrooms Heated and cooled 139 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM
106 MECH. RM Electrical/Mechanical Heated and cooled 43 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM
107 VEST 2 <Building> Heated and cooled 74 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM
108 RECEPTION <Building> Heated and cooled 75 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM
109 KITCHENETTE <Building> Heated and cooled 125 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM
110 LOUNGE <Building> Heated and cooled 346 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM
111 SHOWROOM General High Bay - Manufacturing Facility Heated and cooled 6103 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM
112 CUST. PRIVY ROOM <Building> Heated and cooled 177 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM
113 SHOWROOM OFFICE <Building> Heated and cooled 176 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM
115 CLOSET <Building> Heated and cooled 14 SF Not Computed 0 CFM 0 CFM 0 CFM 0 CFM
PROCESS WITHOUT DRAWINGS
Scan Model BIM

10. PROCESS WITH DRAWINGS
CAD, PDF,
Paper Copy Model Scan
(Verification)
BIM

11. BENEFITS
SCAN INFORMATION COMES IN 2
PARTS – POINT CLOUD &
PANORAMIC SCAN IMAGES
POINT CLOUD DATA IS SUPPORTED
BY MOST BIM SOFTWARE
Scans can be imported directly into
the modeling software
POINT CLOUD & BIM ARE 3D
Point clouds can be viewed in plan,
section, elevation, 3D perspective &
isometric views
Allows us to check the accuracy of
the modeling in many different
views, even if objects are obscured
in some views
FEWER SITE VISITS REQUIRED TO
GATHER INFORMATION FOR BIM
All data for Coach Delivery building
BIM was gathered in about 4 hours
Information that is unclear in the
imported point cloud can be
viewed & measured from the
panoramic scan images
IMPROVED COORDINATION &
ACCURACY
LASER SCAN INFORMATION IS
VERIFIABLE. ANY DOUBTS ABOUT
ACCURACY CAN BE COMPARED TO
THE SCAN.

12. BIM DEFINED
The National Building Information Model Standard Project Committee has the
following definition:
Building Information Modeling (BIM) is a digital representation of physical
functional characteristics of a facility. A BIM is a shared knowledge
information about a facility forming a reliable basis for decisions during its
cycle; defined as existing from earliest conception to demolition.
Traditional building drawings rely on 2D plans, elevations, sections, etc.
BIM is three-dimensional and covers more than just geometry. It also covers spatial
relationships, energy & lighting analysis, geographic information, quantities and the
properties of building components (manufacturer details, etc.)

13. Architectural Objects
Walls, doors, windows, roofs, floors, slabs,
cabinets, furniture, etc.
Structural Objects
Columns, beams, foundations, footings, rebar, etc.
Electrical Objects
Receptacles, switches, panels, transformers,
MCC’s, transfer switches, generators, etc.
Mechanical Objects
Air handlers, VAV’s, chillers, boilers, pumps, tanks,
coils, ducts & duct, fittings, pipe & pipe fittings, etc.
Plumbing Objects
Toilets, sinks, urinals, hot water tanks, softeners,
etc.
BENEFITS – WORK WITH REAL OBJECTS

14. In BIM, while working in plan views, you
are creating also creating sections,
exterior elevations, interior elevations,
3D views and schedules.
Additional views can be taken or
created any where in the model and
will be generated automatically.
Schedules are populated as schedule
objects are added to the model.
Door numbers
Window numbers
Equipment ID’s
Different views of the same
information.
BENEFITS - PRODUCTIVITY

15. Improved Accuracy - The accuracy of the
model promotes more effective
communication between the parties
involved in a building project and reinforces
reinforces understanding.
Reduced number of errors and changes
throughout the design and construction
process.
The parametric capabilities of BIM allow for
for the consistent, coordinated
representation of the model in all views and
and drawing outputs.
IMPROVED ACCURACY

16. 3D visualization and analysis tools
allow for earlier evaluation of the
building design and performance
by all parties involved.
Building design and performance
can easily be changed in the early
stages of a project, saving both
time and money.
BENEFITS - EARLY DECISION MAKING

17. DRAWINGS SETS
Tools in the BIM software automatically fill in
information that needs to be manually entered
entered and verified in CAD software.
Examples: Section heads, detail numbers,
elevation numbers, door and window tags, equipment
numbers, etc.
PROJECTS
BIM promotes collaboration between architects,
designers, engineers and contractors by working
working with the same information.
Clash detection tools can be used to resolve
conflicts between models before getting to the site.
All parties involved will understand the entire
scope of the project.
BENEFITS - IMPROVED COORDINATION

18. SAMPLE PROJECTS