Regardless of the size, you should know that the topographical surveys can be really important. The use of the latest in surveying technology, the topographical land survey may uncover a lot of unforeseen issues which save the developer some money and time.
A topographical survey could give an accurate representation of the surface of the ground and such will also permit natural and also manmade objects that include the existing structures, the boundary details, the tree positions, grid levels, the drainage and ground surfaces. The topographical surveys may show an area the much detail you need which would depend on the project size as well as the terrain that is involved.
You have to know that information is normally gathered by using the electronic theodolite or a total station which would measure the distances as well as the angles between those points on the ground. This actually relates to such standard datum point in which the height and location are being determined already. To add more details to the survey, techniques such as 3D laser scanning or the aerial photography can be used as well. All information which are gathered on the site may be edited and supplied to you in whichever fits you best in 2D drawings or those electronic files.
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Having such topographical survey done on the project may surely highlight the possible issues. The distances between those surrounding properties are actually recorded accurately to avoid the potential boundary as well as right to light problems. The survey may also determine if you will be building on the flood plain or if the ground is actually at risk for flooding. Because of climate change and the recent amount of heavy rainfall which led to several areas being flooded, the need for such topographical surveys has really increased. Due to such combination of the increasing rainfall which is putting pressure on the river banks as well as the manmade drainages and growing population, topographical surveys have certainly become a quite important tool for builders and developers.
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The type and amount of topographical survey detail which is collected on the site must be based on your specification. But, the experienced land surveyors will make use of their knowledge of planning to offer additional information which might be essential for any future design or planning application. The information may be collected as well from utility companies that can be added to the topographical survey plans.
Apart from having the topographical land survey by engineers, you can as well save time for the designer of the project and minimize the risk for contractor by accurately mapping the drainage positions, water supply and those electricity cables.