Automatic distance between pipeline point calculations
To save expensive rework, the Pipelines software automatically detects and warns of possible errors in the tally during measurement of the as-built pipeline. When you measure a point, the Pipelines software selects a point in the job (including all linked jobs) that has a joint with a unique ID that matches the ID of the joint for the point currently being measured. The software computes the distance between the two measured points and then compares this distance to the length value entered for the joint in the tally file. If this distance does not match the length of a joint recorded in the tally, then a warning appears.
The comparison is only possible if:
- The current job or a linked job contains the weld measurement for the joint behind.
- The joint map includes the IDs of both the joint ahead and the joint behind.
If the two values differ by more than 0.2 m, the software warns that the joint length does not match the computed distance.
The 0.2 m value is specified in the JointLengthInverseComparisonTolerance property in the config.cfg file in the Trimble Data \ System Files folder and can be modified if required. The JointLengthInverseComparisonTolerance property is added to the config.cfg file once two points have been measured using the Measure pipeline points function.
If the software warns The joint length does not match the computed inverse length when you attempt to store a measured pipeline point, do one of the following:
- Tap Yes to continue storing the point.
- Tap No to return to measuring the pipeline point. Then:
- Tap Attrib to view the attributes screen and then tap Details to view the information recorded for the joint ahead and the joint behind the weld and update the information if required.
- Re-measure the point and then tap Store.
