Create safety line buffer / avoidance zones

New Product Requests (Post Here)
1

Is it possible to create a line buffer on an existing line

  1. Select line

  2. Add quality point to a existing line to improve the lines quality

  3. Create a saftey buffer line around the lines quality a,b,c,d

  4. Cross line detection to deterimine height difference

  5. Select lines (utilities/ trenches etc)

  6. Report and cloud crossing lines height differences

In Australia, the standard for locating underground utilities is AS 5488-2019, “Classification of Subsurface Utility Information (SUI).” This standard provides a framework for the classification, capture, and management of subsurface utility information. The accuracy levels are similar to those in PAS 128, with corresponding quality levels and tolerance zones. Here’s a summary:

  1. Quality Level D (QL-D):

    • Description: Information derived from existing records or oral recollections.
    • Accuracy: Low accuracy.
    • Buffer Distance: Not specifically defined; can be quite large due to potential inaccuracies.

  2. Quality Level C (QL-C):

    • Description: Information obtained by correlating existing records with visible surface features.
    • Accuracy: Moderate accuracy.
    • Buffer Distance: Typically within ±1 meter.

  3. Quality Level B (QL-B):

    • Description: Information obtained through geophysical methods such as ground-penetrating radar or electromagnetic detection.
    • Accuracy: Higher accuracy than QL-C.
    • Buffer Distance: Typically within ±300 millimeters.

  4. Quality Level A (QL-A):

    • Description: Information obtained by direct exposure of the utility, such as through excavation or potholing.
    • Accuracy: Highest accuracy.
    • Buffer Distance: Typically within ±50 millimeters.

These quality levels in AS 5488-2019 help ensure that the subsurface utilities are accurately located, minimizing the risk of damage during construction and excavation activities. The standard also emphasizes the importance of verifying and documenting the locations of utilities to improve the reliability of the data over time.

2

Hey Gavin,

What kind of gear are you using? You could look at doing some avoidance zones in Trimble gear. If you want to do it all in TBC I would have to think about it for a bit, see the data and have a longer conversation about what you are trying to achieve. Should be possible… Might be a bit of a process but I think I need more information to be sure.

3

Hey Shane

Thanks for the reply

typical we have various from the designer GIS, but they are never correct

what we are wanting to do is to update these line and then creating a buffer around the line showing where we have the greatest confidence in the line position

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4

Is it something you could do with fill areas or hatch patterns on a closed line? different colors or patterns tied to confidence levels? with the interior area being designated as an avoidance zone on the controllers? This would then not alert the operator until they enter that zone which could also be the next one outside of the innermost area to give them some cushion.

Just spit balling some ideas at you, let me know what you think?