Land & Topographic Surveying:
A topographic (topographical) survey is often a pre-requisite to design or is simply required to provide information about ‘what is out there’. We have the skills and technology to collect data in the field and to present it in a format of the customer’s choice. As a given, we would always expect to provide data in relation to National Grid and datum (Ordnance Survey coordinates) – Why accept a survey based on an arbitrary grid and not benefit from knowing its relationship with the wider area? Of course we will work to a local coordinate scheme if that is what is required. Our reflectorless total stations can measure remotely (up to 1000 metres) so that if it can be seen, it can usually be measured without entering neighbouring property. An in-built imaging capability allows annotated photographs to be taken whilst collecting data.
GPS/GNSS Surveys:
These days a GPS receiver is a fundamental tool for collecting and providing data in the geospatial environment and Woods Surveys continue to invest in the latest technology. Using a nationwide network of base stations provided by the Ordnance Survey our GNSS rovers can be deployed quickly to collect real time data which can be on a drawing and acted upon the very same day. Useful for surveying large areas of open land such as quarries and landfill, we can also rapidly deploy and collect small amounts of localised data such as heights for a flood risk assessment.  This is often a requirement of local authority planning.
Site Engineering:
We pride ourselves in being able to take design information from an architect’s or engineer’s drawings and to represent it on the ground in a way so that machine drivers and other site operatives have an unambiguous understanding of exactly what they need to create. We have considerable experience of setting out in the built environment, for example; roads, drainage, piles, foundations and major earthworks such as reservoirs, highways and landfill/quarry restoration. In fact you can call us to discuss any aspect of dimensional control.
Ground Modelling & Volumetric Analysis:
We take surveyed data and form a digital terrain model (DTM) and from this quantities such as lengths, areas and volumes can be ascertained. Calculating stockpile volumes are a typical requirement.
Design data can also be created as a DTM and by comparing it with a corresponding existing model, complex quantitative reporting is facilitated. The design DTM may be uploaded into machine control systems and we can also use it in our field equipment to set out positions anywhere within the model and not just pre-determined points.
By comparing two models an isopachyte can be created. An isopachyte depicts lines of equal thickness in a similar way that height contours join points of equal elevation. Typically, an isopachyte may be used to depict depths of excavation and deposition (Cut and Fill)
Machine Control:
Huge advances have been made in transferring ground design profiles straight to the tip of an excavator bucket or the blade of a bulldozer. This greatly improves accuracy, efficiency and above all safety. There is much less need for an operator to keep getting out of his cab or for banksmen to be operating in close proximity to machinery. At Woods Surveys, we can arrange the installation of machine control equipment from basic 2 dimensional systems to laser guidance to full 3D control from a total station or satellites. We can take the design geometry in paper or electronic formats and convert it to programme the control computer in the cab of a machine.
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