Trimble Business Center

@Fredrik Bergstrom have a look on this webinar please, I hope it'll help you.

2018 | JUNE | 27 TBC Power Hour: Going Vertical in TBC... With Projected Surfaces

He is just plotting the C/F map as i already have done (did you see my attatched files?) but i also want to get the pointcloud for example in the dynaview. 

That webinar is for an older version i think and i hope the drafting is better in todays TBC for projected surfaces. Just plotting the white C/F map doesnt show much and if i give the map some colours based on the difference the legend dont seems to work with projected surfaces so i cant show what the colour means. 

Do you know if i can get the pointcloud to work in the dynaview for example, or use the photos from the station in some way.

/F

You can also try using the Radial Surfaces function (I have posted videos

on this to the forum previously) - a Radial Surface can be added to a

Corridor Modeland you can then use it to slice section lines etc if you

need to show a 3D Shape of a Near Vertical or Overhanging Rock Surface etc.

I use that more than the Projected surface because of this specific reason.

You can also try the following - I did this for a Coastal Erosion project

recently

Create the Projected surface and export it to a DXF File (you can try using

Explode Surface that may also work these days - not sure. Import the DXF

3D  Faces back in as linework. You can then draw on section lines in 2D and

then use the Elevate Lines by Intersecting Lines to drape the 2D lines over

the 3D Faces - you may have some cleanup to do afterwards - but that can

help define the faces with kind of section lines - where you have overhangs

will be the most problematic - you may need to break the section lines and

do them in parts and then join them together so as to get the Top and

Bottom of the overhangs etc.

Let me know if these ideas help - failing that I can try to look at this

later in the week

Alan

On Tue, Nov 12, 2019 at 4:22 AM Fredrik Bergström <trimble@jiveon.com>

A while back I was tasked to scan the shoring used in the excavation of a basement and compare the face of the lagging with the proposed basement wall.  The purpose of this exercise was to confirm the distance between the lagging and the proposed basement wall.

I tried using a projected surface with cut fills.  This approach did not offer a good way to present the information. The contractor needed to be able to identify areas where substrate material would need to be added. I constructed a 3D model of the basement wall.  I tried to use extrusions, but TBC did not recognize them. So, I built a wireframe.  The basement footprint was created as a polyline at finish floor elevation.  Then the footprint was offset vertically at 2’ intervals.  Then the horizontal grid lines were added at finish floor elevation. From these vertical lines were drawn from bottom of wall to top of wall. TBC displayed this line work IN A 3D View.  In the end I added more vertical lines until I had a 2’ x 2’ grid on the vertical wall.

The CAD file was imported into TBC. Then the lagging scans were imported. 3D Views were setup to display and orthographic view of the scan.  The typical point cloud spacing varied was about 0.10’. CAD points were created by manually picking a point nearest the grid intersection. Once a section of the wall was completed, an alignment was created on the exterior top of wall.  This was used to calculate a station and offset of the CAD points.

The next trick was to make a plot that would show the point offset relative to the grid on the wall. I was not able to plot this in TBC.  Civil 3D was not much help.  I had been making screen shots of the lagging point cloud with the grid lines and then pasting the image in WORD on a 11x17” to document the survey.  In some places the wall was obscured by other construction activity and this provide a way to track and communicate what was going on.  With the point cloud turned off, the points were visible. All I had to do was figure out how to insert the offset in the feature code field. This was accomplished with a custom point import that read the station-offset report.  The shows a point number and an offset.  Offset is evaluated for geometric tolerances. The point and the grid lines offer a means mark an area that needs work.

See the attached image. This is drawing is to facilitate on-going construction work. It will not win any drafting awards, but it did serve its intended purpose....adapt, improvise, overcome