A line and level survey for coastal defence analysis of 26 Km of sea wall from the north end of East Beach (Southend-on-Sea) to “The Quay” on the west coast of Foulness Island.
The Survey was an initial study and the brief required points surveyed to national grid coordinates every 100 metres along the sea wall, one at the crest and one each side at the foot of the sea wall. We actually supplied intermediate points every 50 metres in addition to the brief and enough points at the crest level to properly map bends and changes in direction of the sea wall. In all some 2000 points were surveyed.
In many places, a vehicle track runs parallel to the sea wall on the landward side and so two additional points were required to give representative cross sections at the specified 100 m intervals.
Photographs were taken at places of interest and damage / poor condition of the sea wall, and all this information was plotted on a scale AutoCAD drawing, overlayed onto OS mapping data.