Bulky measure

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As Sperrmaß (in Germany: Missing Line ) in which it is geodesy and other fields of engineering control of newly surveyed points with the measuring tape called. Blocked dimensions mostly measured as inclined distances and only relatively rarely as horizontal distances.

As a rule, the measurement is carried out using " linear dimensions " (starting from a prominent point), whereby the final dimension is usually underlined in the sketch. Cross and height dimensions are also useful from time to time. For some time, there are also handy EDM instruments, such as the Distometer of Leica , which is also in the building industry and in the interior design for the rapid measurement of of rooms and ceiling heights is used.

In the point descriptions ( "topographies") of measuring points barrier dimensions are the most important help to getting the right survey points distinctive sites, road or crossroads because with important buildings, there is often more - to choose marketed points. Even if the point is no longer visible on the surface - e.g. B. on the roadside covered by several centimeters of gravel or overgrown by the sod , the existence of 2 to 3 reliable blocked dimensions is often the only way to find the point and work economically.

The reliability of measuring points can be significantly increased by using blocked dimensions , because any errors (incorrect assignment, gross measuring errors , falling digits when taking notes, etc.) are quickly noticed. The usual software for construction and surveying usually contains sub- programs or labels, which enable a semi-automatic control of survey points by means of blocked dimensions.

A special form of blocked dimensions is the (here horizontal) arrow height , with which the measurement of curved routes and other curves can be controlled. The lateral distance from P 2 to the straight connection P 1 -P 3 is measured with 3 consecutive curve points P 1 , P 2 , P 3 . With such arrow heights the curvature of the curve can easily be checked.

source

  • Use of cadastral data - how exactly is the border needed? Applied Geoinformatics 2005 - Contributions to the 17th AGIT Symposium Salzburg (Strobl, J., Blaschke, T., Griesebner, G., Eds.) Pp. 493–502. Wichmann Verlag Heidelberg ( online at geoinfo.tuwien.ac.at - pdf, 198 KB)