To stake out a polyline

Polylines are two or more lines or arcs connected together. If required, you can create a polyline from existing points in the map. See To key in a polyline.

Before you start, configure your navigation display settings. You can stake relative to a DTM or the design elevation, if required.

  1. To select the polyline:

    • From the map, you can:
      • Select the polyline and tap Stakeout.
      • Double‑tap the polyline in the map.

      When selecting a polyline to stake out from the map, tap near the end of the polyline that you want to designate as the start. Arrows are then drawn on the polyline to indicate the direction. If the direction is incorrect, tap the polyline to deselect it and then tap it at the correct end to reselect the polyline in the direction required. Alternatively tap and hold in the map and select Reverse polyline direction from the menu.

      If the polyline has been offset, the offset directions are not swapped when the polyline direction is reversed.

    • From the menu, tap and select Stakeout / Polylines.
  2. In the Stake field, select the method and then fill out the required fields. Refer to the Polyline stakeout methods below.

    To select the station to stake, key it in, tap the Sta‑ and Sta+ softkeys, or tap next to the Station fields to select a station from the list. To select the start or end station, tap the Start station or End station softkey.

    To customize the stations available for stakeout, tap next to the Station field to view the Select station screen. See Stations available for stakeout.

    If the station interval value is null, no station labels are displayed. If the station interval is 0, the station labels for the start and end stations plus any PI, PC or PT stations are displayed. If the station interval is a numeric value, labels for all stations are displayed (depending on the zoom scale).

  3. To review the polyline definition, tap Details.
  4. Enter the Antenna height or Target height, the value of the station to be staked out (if any), and any further details, such as horizontal and vertical offsets.
  5. Tap Start.
  6. Navigate to the point.

    The Relative to polyline navigation deltas are derived by projecting from your current position perpendicular to the polyline to compute the Go Right/Go Left value, with the Go Forward/Go Backward value computed from that station along the polyline to the target station.

    When the stake method is Station on polyline, Station/offset from polyline or Skew offset, you can edit the elevation. To edit do this, press the Space key or tap and enter the new elevation value. To restore the original elevation after editing, press the Space key or tap and then tap and select Reload original elevation.

  7. When the point is within tolerance, tap Measure to measure the point.

    When using a Trimble SX12 scanning total station in TRK mode with the laser pointer enabled, the Stakeout screen shows the Mark point softkey instead of the Measure softkey. Tap Mark point to put the instrument into STD mode. The laser pointer stops flashing and moves to position itself at the EDM location. When you tap Accept to store the point, the instrument automatically returns to TRK mode and the laser pointer resumes flashing. To remeasure and update the stakeout deltas, tap Measure after you tap Mark point and before you tap Accept. For more information, see EDM settings.

  8. Tap Accept to store the point.
  9. If you selected the View before storage option, the staked deltas you selected in the Stakeout options screen are shown. Tap Store.
  10. The software returns to the navigation screen or, if you selected multiple items to stake out, the software returns to the Stake out items list.

Polyline stakeout methods

When staking a station or staking to the polyline you can tap another station or polyline in the map to change what you are staking, and the stakeout details in the adjacent panel update to reflect the new selection.