0000001775 00000 n In this case you should only be surveying a maximum of 50m from the total station. free-station setup it is best practice to keep all the measurements or observations 0000007324 00000 n free-station setup will be contained within the area of work.If you had a particularly small resection or free-station setup, let’s say all control points measured within 50m of the total station and then you were to mark out or survey 300m from the total station then you magnifying any potential error from that setup. 0000006645 00000 n So by using points outside the working area you can limit the potential rotational error that affects the resection or free-station setup and limit the error that can be observed throughout the work area.This is the website where I share the information that I have learnt, the tips I have been given and the tools that I use day in, day out whilst surveying and engineering.If you would like to join and contribute to this site as a writer, please email me atThis site contains adverts and affiliate links. During these three resections, the total station has not been moved, so in theory the results (Easting, Northing and Elevation) should all be the same.
have the same position for the free-station. 081019B. trailer << /Size 128 /Info 94 0 R /Root 96 0 R /Prev 127993 /ID[<0673f0f68216a67e76425304cb20cd05><0673f0f68216a67e76425304cb20cd05>] >> startxref 0 %%EOF 96 0 obj << /Type /Catalog /Pages 91 0 R >> endobj 126 0 obj << /S 455 /Filter /FlateDecode /Length 127 0 R >> stream and only the measurements or calculations by the total station should be different. 0000010461 00000 n If the geometry is close to this, then the solution is weak.
Lot of times when using Total Stations I choose resection all modern TS have.
But looking at the results for ID 081019B we get E:424367.703 N:300321.473 Reading For Construction ProfessionalsOur website uses cookies.
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In the image below you can see what I mean by a small angle.With this example we are judging the accuracy of the However, recording the height of the instrument would indicate whether the operator had set the total station possibly too high or too low for use.When setting up a Total Station in an unknown location (that is a position that the Easting, Northing and Elevation are not accurately available) we need to have at least two accurately known points (Easting, Northing and Elevation) so that we can triangulate the position of the Total Station. I never experienced much difference between them. ��[ i&x�V�lo������+�鸷�y�;P����iްe��Kv��x�L���_; �]����D�aq�W3�N`����7��C�(0�������$v�5C7�\��7����b0���t�Qh�Mܼ��x�DT�i��`x�w�w����b�3)��9����I���~T%Dv����&F�� ����
0000008003 00000 n N:300321.483 L:101.360. If you have a small angle between the known points, when 0000006667 00000 n This resection has been named ID 081019C as it is now the third resection setup of the day. 0000003413 00000 n With all things being the same, the same two control points 0000001008 00000 n l�ީ�� @ P'�� 4�+��M� I�� �&��P@^�&����(�_&ޛ9�9�W�`�DK^`�DK Topic 6: Angle measurement: Intersection and resection. Save this as a point (ex. This helps me identify it as a free-station or a resection setup. I have also only used retro targets for setting the free-station or resection.