Height of collimation booking sheet examples

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Examples : highways, large buildings, etc. As with any computer-based application “Garbage in equals Garbage out”. However, in the case of inaccurate construction surveys “Garbage in equals lawsuits and contractors claims for extras.” 7.5 Disadvantages of Total Station Surveying It is also known as ‘height of instrument’. It should not be confused with the height of telescope from the ground where the instrument is set. (ii) Back Sight (BS): It is the sight taken on a level staff held on the point of known elevation with an intension of determining the plane of collimation. It is always the first reading after the ... Examples : highways, large buildings, etc. As with any computer-based application “Garbage in equals Garbage out”. However, in the case of inaccurate construction surveys “Garbage in equals lawsuits and contractors claims for extras.” 7.5 Disadvantages of Total Station Surveying
 

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Examples : highways, large buildings, etc. As with any computer-based application “Garbage in equals Garbage out”. However, in the case of inaccurate construction surveys “Garbage in equals lawsuits and contractors claims for extras.” 7.5 Disadvantages of Total Station Surveying Latitudes and Departures - Example Side Length (ft) Latitude Departure degree minutes AB S 6 15 W 189.53 BC S 29 38 E 175.18 CD N 81 18 W 197.78 DE N 12 24 W 142.39 EA N 42 59 E 234.58 Bearing Recall the results of our example problem Surveying - Traverse Latitudes and Departures - Example Side Length (ft) Latitude Departure degree minutes The resulting collimation corrections can have much better precision than those derived from the traditional two-peg test. In a recent settlement monitoring survey in the SNS Mar 31, 2010 · This tells you nothing about the quality of the measurements. For that, you need to compare the calculated final reduced level with the known final reduced level. With a levelling survey, you always start on a known height and finish on a known height, in order to check for cumulative errors in the measurements.
 

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The resulting collimation corrections can have much better precision than those derived from the traditional two-peg test. In a recent settlement monitoring survey in the SNS Height of Collimation is the height of the horizontal plane through the telescope. In order to see the staff on the BM the instrument must be higher. To find the Height of Collimation (Instrument Height) add the staff reading to the level of the Bench Mark. Sep 11, 2008 · So if you know the height of the piece of ground (try and find a benchmark that you have levels for) you can calculate the collimation. E.g if the ground under the staff is 32m AOD (Above Ordnance Datum) then add the reading on the staff (2m) to get the collimation. The height of your dumpy level (collimation) is 34m AOD. Nov 17, 2017 · Rise and fall and HI(height of instrument) are methods to solve the levelling to find differnce in elevation and elevation of points. Lets start with why Rise and Fall called so?

Collimation Method As explained earlier, the height of instrument (HI), e.g. the height of line of collimation above BM (station of known level) at every instrument station is determined through adding the backsight of BM station to decreased level of BM. 'Staff Minimum Height’ and ‘Staff Maximum Height’ – Staff Height that you use in Field Example: 3 M, 5 M ‘Instrument Proximity’ – Distance that your instrument can measure Example: 20 M – 100 M ‘Starting RL’ – By referring to cross section data you can specify this value – Say...

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Latitudes and Departures - Example Side Length (ft) Latitude Departure degree minutes AB S 6 15 W 189.53 BC S 29 38 E 175.18 CD N 81 18 W 197.78 DE N 12 24 W 142.39 EA N 42 59 E 234.58 Bearing Recall the results of our example problem Surveying - Traverse Latitudes and Departures - Example Side Length (ft) Latitude Departure degree minutes The sytle sheet allows you to choose from a set of simple block definitions to be used for the points. It also provides an option to split the data into layers based on the point codes. The style sheet will also carry out some simple feature code processing as it creates the DXF file to join up points based on their codes.