Transcript Building Workflows-Handout - Turning Point Systems Group

Session Agenda
Overview
Research Methodology
Case Studies
Workflows
 2D Elevation Views with CloudWorx
 3D Models with Cyclone
1
Building / Architectural Workfllows
High Definition Surveying
Overview
More efficiency for certain
Architectural and Building
Surveys
New markets emerging based
on the latest Leica Geosystems
HDS tools
2
Building / Architectural Workfllows
High Definition Surveying
Research Methodology
Cullinan Engineering Co., Inc.
 My previous experience
 70+ projects completed
 >50 of the projects involved a
building
Plowman Craven Associates
 Leading scanning company in the
UK
 Conducted tests of conventional
survey to scanning
Mollenhauer Group
 On the forefront of scanning
buildings
 Provided comparisons of the
HDS2500 to the HDS3000
3
Building / Architectural Workfllows
High Definition Surveying
Building/Architectural Case Study and Workflow
Working With HDS
to Provide
Geometrically
Accurate, Complete
and Cost Effective
Building “As-Build”
Surveys and 3D
Models
4
Building / Architectural Workfllows
High Definition Surveying
Company Profile
 Founded in 1964, PCA is one of the most respected
Geomatics companies in Europe.
 Over 90 employees in UK, with clients throughout
Europe with diverse projects in geomatics
 Uses a variety of advanced electronic
instrumentation to provide printed and digital data
management, photogrammetry, aerial surveys, land
surveys, advanced 3-dimensional modeling, CAD,
GPS and other crucial services.
 1St European company to purchase the Leica HDS
2500 in February 2001
 Revenues > £ 5.5 million
5
Building / Architectural Workfllows
High Definition Surveying
Why HDS?
 Building surveys (> 60%) is core
area for PCA (floor plans,
elevations, and site surveys, 3D
modeling)
 Most work focused in heavily
populated urban areas
 Time and money saved using
HDS keeps PCA bids
competitive
6
Building / Architectural Workfllows
High Definition Surveying
Cardiff City Centre “As-Built”
Deliverable
 “3D Visualization Service” Geometrically accurate
AutoCAD 3D Model of existing
conditions to allow showing
proposed 3D scheme
Products Used





Cyclone 5.2
CloudWorx 3.1 AutoCAD
CloudWorx 3.1 Microstation
1- HDS3000, 2-HDS2500
AutoCAD, Microstation, 3D
Studio
7
Building / Architectural Workfllows
High Definition Surveying
Cardiff City Centre “As-Built”
Scanning Details
 50,000 m2 area scanned
 Over 2.5 km of building
elevations
 Building heights > 20 m
 Number of control stations =
8 (surveyed with total
station)
 Scan worlds collected = 126
8
Building / Architectural Workfllows
High Definition Surveying
METRICS
EFFORT
Field
(person
wks)
Office (person
wks)
Conventional
21
6
71%
30
15
50%
Actual (Scanning)
Savings
Misc.
Based on an Internal study by PCA:
“The results show an accurate match between
conventional methods and the scan data and a possible
productivity saving of 50-60% in field and CAD time.”
9
Building / Architectural Workfllows
High Definition Surveying
The Workflow - FIELD
►Establish GPS control using Total Station
►Perform Field Scanning using many scanners to
expedite
►Process Data in field and check for accuracy
and completeness
►Perform weekly registrations to keep project
moving, data sets small, and allow multiple people
to work on project
►Put each scan world on a different layer in the
same project
10
Building / Architectural Workfllows
High Definition Surveying
The Workflow - Office
►Clean up each scan world (layer) separately
►Break project into separate projects to allow more people
on different segments
►Open individual projects in ACAD and Microstation
CloudWorx (final deliverable was ACAD, but using
Microstation followed by converting to ACAD expedites the
project)
►Finally, create "2.5D" ACAD drawings by extracting
horizontal and vertical geometry from point cloud using
AutoCAD and CloudWorx tools
►Most clients have also been asking for ASCII points
(PTS, PTX) data in “manageable chunks”
11
Building / Architectural Workfllows
High Definition Surveying
U-Mass Medical Center
Scope:
 Locate the centerline of every
window mullion for a distance
calculation to a known column line.
A new planar prefab façade is
replacing the decaying irregular
granite façade.
Deliverables:
 2D elevation plans with offset
distances shown to the nearest
parallel column line. Plumbness
measurements at a later date.
Field (Actual):
 3 ½ weeks (night work only)
Office (Actual):
 7 weeks
12
Building / Architectural Workfllows
High Definition Surveying
U-Mass Medical Center
Metrics:
13
Task
Conventional
(Estimated)
Scanning
HDS2500
Savings
Field Time
10
Weeks
3½
Weeks
65%
Office
9 Weeks
7 Weeks
22%
Notes
Job would not
have gone
forward if this
method was
used
1 scan crew +
1 conventional
crew for
control
Data was
revisited for
building
plumbness
measurements
Building / Architectural Workfllows
High Definition Surveying
U-Mass Medical Center
14
Building / Architectural Workfllows
High Definition Surveying
5-story Building Façade, Los Angeles
Scope
 Geometry needed for future metal
cladding attachment points
 60’H x 150’W face
Deliverables
 2D plans + 10’ sections
Field (HDS3000)
 4 hrs
Office (Cyclone 5.0)
 12 hrs
15
Building / Architectural Workfllows
High Definition Surveying
5-story Building Façade, Los Angeles
16
Building / Architectural Workfllows
High Definition Surveying
5-story Building Façade, Los Angeles
HDS3000 advantages
 50% less field time
 60% fewer targets
 Full FOV allowed setup in
alley (160° H x 135° V
scan)
 Avoided need to try to
access roof of adjacent
building
 Able to put target behind
scanner
17
Building / Architectural Workfllows
3000
(actual)
2500
(est.)
Field time
4 hrs
8 hrs
# Targets
6
13-15
Other
logistics
High Definition Surveying
Need to
access roof of
adjacent
building
Workflow Assumptions
 The user of these workflows will need to be somewhat
proficient in AutoCAD
 All basic functions of the Cyclone software are known to
the user
 Cyclone and AutoCAD MUST ‘live’ on the same computer
18
Building / Architectural Workfllows
High Definition Surveying
So many workflows to pick from… Which one is
right for me?
Today, there really is no one ‘cook book’ style of tackling a building
project.
There must be a scope of work clearly defined, since this will drive the
amount of scanning done and the type of post processing.
We will look at two types of deliverables.
 The full 3D model. (Done in Cyclone)
 The 2D elevation view (Done with CloudWorx)
19
Building / Architectural Workfllows
High Definition Surveying
Two Typical Building Workflows
Basic work process:
a. Scanning
Front Face of the
Structure
a. Cyclone
b. Scanning
Multiple Faces along
a streetscape
3D Lines
Defining
corners
Registration
Geo-Reference Scans
Together to Assumed
or SP Coords.
Data
Cleanup
b.
CloudWorx
2D Elev. view
c. Scanning
All Sides of the
Structure
20
Building / Architectural Workfllows
High Definition Surveying
3D Model - Cyclone Steps:
1.
Unification of PointCloud


2.
Creation of Lines/Patches/Cylinders/etc.


3.
Clean up unnecessary data that has no bearing on the building face(s).
Unify the remaining PointCloud
Copy small pieces of the cloud into a separate ModelSpace and create
lines. Merge them back into the parent ModelSpace when done with
each section.
Polygonal Fence ‫ ׀‬Copy to New ModelSpace ‫ ׀‬Orthographic Mode ‫׀‬
Create Patches ‫ ׀‬Create Lines from Patch Intersections
Create Patches between the lines

Create Object ‫ ׀‬From Curves ‫ ׀‬Patch
Note: This method is very repetitious, and can become very mundane. Once you
have done these steps a few times, assign hotkeys to the series of commands
that you are using. This will speed things up considerably.
21
Building / Architectural Workfllows
High Definition Surveying
3D Model – Cyclone/AutoCAD Steps:
Once all of the model has been
created in Cyclone, you are
ready to export them into the
AutoCAD environment.
1. In Cyclone, be sure that nothing
is selected, and that you are
working in the default
coordinate system that was
defined during the registration
process. Now: File ‫ ׀‬Export
2. Name the file and choose the
.coe extension for the file.
3. Export visible.
4. Open a new AutoCAD drawing.
5. Import the file into AutoCAD.
6. COE ‫ ׀‬Import
7. Browse for the file, set the
appropriate
units, then import.
High Definition Surveying
22
Building / Architectural Workfllows
2D Elevation View – Cyclone Steps
Very similar to the 3D initial steps. You will still clean and unify the
PointCloud.
Here is where the methods change. Set up a parallel line to the face of the
building. From the parallel line that you have created, set the X axis to
this line. Now set the Y axis to the up direction. Save the Coordinate
System in Cyclone. Now the PointCloud is ready for insertion into the
AutoCAD environment.
23
Building / Architectural Workfllows
High Definition Surveying
2D Elevation View – AutoCAD / CloudWorx Steps
Start a new drawing, set the appropriate drawing settings and then SAVE!
AutoCAD does not have the nice function of automatically saving
everything.
Go to the CloudWorx pull down and Open MadelSpace View. A box that looks the
example below, will appear. Navigate to the ModelSpace View where you had set
up the X & Y axis.
Be sure to correctly set the units.
Select the coordinate system that you
saved.
Then hit OK.
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Building / Architectural Workfllows
High Definition Surveying
2D Elevation View – AutoCAD / CloudWorx Steps
Now you are ready to
start your drawing.
Just by turning on
‘Ortho’ you will be
able to trace the
point cloud to
achieve your final
drawing. As you pan
down the face of the
building, be sure to
‘Regenerate
PointCloud’ to be
sure that all of the
points are visible to
you.
25
Building / Architectural Workfllows
High Definition Surveying
2D Elevation View – AutoCAD Steps
Finished plan.
..\Land Projects 3\Consul-Tech\dwg\Bldg-Clowdworx.dwg
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Building / Architectural Workfllows
High Definition Surveying
SUMMARY
 Growing market for Leica HDS solutions
 Latest HDS solutions are compelling for large building elevation views
 Field and office efficiencies are primary drivers
 Other key benefits: no re-visits and improved safety
27
Building / Architectural Workfllows
High Definition Surveying