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Home > Survey Mode > Reductions > Traverse > Reduce > Flat Traverse

Flat Traverse

This function allows you to reduce a conventional simple traverse, in which it is assumed that all distance reductions have been carried out separately and that the distances supplied have been reduced to the horizontal. It therefore does not require the entry of the vertical angles unless a height traverse has been incorporated.

It can also be used for theoretical calculations, such as cadastral reconstruction, where an adjustment is required.

Mis-closures are presented for inspection and acceptance prior to the final adjustment. If a height traverse has been incorporated, this is done immediately after the horizontal traverse. The final adjusted coordinates of the traverse stations are added to the terrain database.

Procedure

  1. The Destination Surface displays.

  1. Select the surface for the traverse results and click OK.

  2. Choose how outside orientation is to be handled. Click Yes if you want the opportunity of editing the calculated orientation corrections; or No if the calculated corrections should be used as-is.

  1. If you select Yes for Manual input of outside orientation, you are asked to confirm the final orientation correction at every setup station. Fill in the relevant data and click OK.

  1. If an oriented back observation is available from the final point, there is the option of carrying out a preliminary angular adjustment before the Bowditch adjustment. Generally, the angular adjustment improves a traverse with no outside orientation, but makes one with outside orientation worse.

  2. The following Confirmation message displays. Click Yes to have angular adjustment carried out; or No to accept the calculated angles.

  1. Once the final coordinate misclosure has been calculated, you must decide if you want to proceed with the final adjustment. Click Yes to complete the reduction; or No to cancel the reduction.

  1. If you click Yes, and there are no redundant observations in the data, the traverse coordinates are added to the database. If there are redundant observations (denoted by the code 'n'), you are asked if you wish to proceed with the network adjustment. Click Yes to carry out a network adjustment of the final coordinates based on the redundant observations; or click No to cancel the reduction.

Output