What Does Adjusting Construction Mean?
Adjusting construction, in trenchless technology, is defined as a process by where a physical adjustment by means of construction methods are completed to properly fit a manhole cover or level the area surrounding a manhole or underground inspection chamber in such cases where there has been a change in elevation of the structure of the surface, either raised or lowered, by 12 inches or less.
Trenchlesspedia Explains Adjusting Construction
Adjusting construction is carried out in places where the ground level, with respect to the manhole, has been raised or lowered due to processes such as the installation of inlet / outlet pipes, granular material backfill, installation of frames, covers or grates, pre-cast construction or poured in place construction. These activities carried out in or around the manhole can cause a difference in grade which has to be adjusted. This could include removing concrete to desired elevation where top is to be lowered, removing or adding bricks or grouting. Once the adjustment is completed, the frame and cover is set to the new elevation in a mortar bed.