1. Set up the level so that the sighting distances to A and B are about the same. 2. Set up the staff at A and read off the backsight R = 1.305. 3. Set up the staff at B and read off the foresight V = 2.520. The difference h from the required height at B is calculated as: h = V – R - ∆H = 2.520 – 1.305 – 1.00 = +0.215m 4. Drive in a post at B and mark the required height (0.215m above ground level). In another frequently-used method, the required staff reading is calculated in advance: V= R - ∆H = 1.305 - (-1.000) = 2.305 The levelling staff is then moved upwards or down- wards until the required value can be read off with the level.
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Survey Photos by Tag or CategoryEarth's Largest Survey Photos Collection
Since 2007, Land Surveyors around the world have shared their best Surveying Photos from the field. Inside this collection you can transport yourself to virtually any location on Earth and see how Land Surveyors work, types of equipment being used and environmental challenges associates with being a land surveyor in that location.
Location Based Chapter Hubs also have photos specific to the locations they represent. You can use our Surveyor Apps for quick sharing of your photos from the field.
Note: Members who have uploaded their photos of surveying to this collection can also move their photos to location based hubs. To see how, follow this tutorial.
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