During the inspection of the sewer network, not only was the condition of the main and connection pipes determined for an overall rehabilitation concept, but their pipe routing was also measured with width, length and height data (xyz coordinates).
3D pipe run measurement in practice
The extensive project was launched in Zimmerschied, one of 19 localities in the Nassau municipality with a population of 100.
Challenge
Only analogue plans were previously available for the sewer system of the small village of Zimmerschied, located on the southern slopes of the Westerwald at an altitude of 460 m above sea level. The documentation referred mainly to the main sewers in the public area, the location of which was relatively well known from manhole measurement and camera inspections. No information was available in the construction records about the number, condition and location of laterals.
Solution
Starting from the main sewer, the 3D-GeoSense lateral inspection and measurement system was used to inspect and record the run of the pipe in a single operation. Where necessary, the results of the 3D pipe run measurement was verified by an additional hydrostatic height measurement. This is a method that determines the elevation of sewer systems with an accuracy of ± 1 cm.
Result
The geodetically accurate position survey of the wastewater facilities made a valuable contribution to economical and sustainable rehabilitation planning. The pipe run measurement provided xyz coordinates of the pipes, thus completing the information on the inspected sewer system. The generated site plan of the ramified laterals makes its easier to locate the pipe for possible rehabilitation measures or other structural planning.
Company introduction
The engineering office S. Kämpfer is specialized in sewer condition classification, sewer condition assessment and sewer rehabilitation concepts.
Kanal Wambach GmbH from Neuwied is an experienced provider of services in the wastewater sector with 50 employees and 35 operative vehicles.
