When Dekalb County Government needed to study its water distribution and wastewater system, including inspections, evaluation, location, and inventory, DMD Engineering and Construction was proud to be selected as a key member for the five-year multi-million dollar project.
As part of a project team, led by Brown and Caldwell, and including Long Engineering and LCW Engineering, DMD has the task of locating and inspecting thousands of manholes; service clean outs, and lift stations in Dekalb County to determine their overall condition.
Each manhole is opened so that inspectors can better see the condition of the manhole and determine the orientation of all incoming and outgoing pipes relative to north and south diameters.
The depth of the pipe is measured using a surveyor’s leveling rod, and a pole-mounted video camera is inserted into the manhole in an attempt to inspect approximately 10 feet of sewer, depending upon size and water level.
DMD’s crew makes video recordings of any defective manholes or sewer lines and the manhole number is etched into the rim using a portable engraving tool.
All data is checked and re-checked to ensure quality information has been gathered and information is placed into a project database for interpretation and reporting.