BEARING CORRECTIONS

In Landonline it is possible to indicate that a bearing correction has been applied to bearings adopted from a referenced survey. Any bearing corrections applied are specified when the referenced surveys are identified. The corrections are displayed on the header of the digital survey plan. This is the equivalent of the panel note required on a hard copy plan, when bearing corrections are applied.

When adopted bearings are entered in survey capture, and the reference plan from which they are adopted is identified, Landonline records the bearing correction against this bearing.

The bearing entered is the bearing as corrected. Thus it is the same bearing that would have been drafted on a hard copy plan. During validation, if Landonline already holds the bearing from the original survey, it will take this bearing, apply the bearing correction identified and compare this with the corrected bearing supplied on the new survey. If these do not match, pre-validation will generate a message highlighting the inconsistency.

In some cases, surveyors may identify the fact that a single bearing correction is not appropriate for all the bearings on an underlying survey - ie there may be significant inconsistency between bearings adopted from different parts of the underlying survey. While it is possible in the Landonline capture screens to specify bearing corrections for individual observations that differ from the default specified for the referenced survey, this situation should not be applied this way. Future surveyors looking at the digital survey plan will only be able to see the general correction applied to the referenced survey on the header. They will not be able to see any individual corrections that differ from this.

In the case, where the surveyor believes some bearings should have corrections applied that differ from the default for the whole referenced survey, these bearings should be classified as calculated rather than adopted and the bearing correction will not be specified in the survey dataset. A justification for the differential corrections/calculations will be required in the survey report and images of calculation sheets supporting this will also be required.