ENSURE YOU SAFELY & EFFICIENTLY IDENTIFY THE ASSETS VISUALLY

Most of the time before physical works are undertaken, potholing is required to visually identify the assets. There are many reasons why this needs to happen. Unfortunately, Utility Locates & Mark-outs are not perfect. No one should ever trust the "paint on the ground" or the as-built plans without sufficient systems in place (talk to us about these systems). Soil conditions, utility type, utility congestion, depth, protection methods etc. all have a part to play in the accuracy of a utility locate.

As such, the confidence should be taken into consideration and processes followed to have certainty in the location of the assets before works start.


POTHOLING
Potholing is usually a small excavation or inspection hole to find underground services.
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Figure 2: Pot hole

PIT EXCAVATIONS
Pit excavations are usually four-sided and deeper than the narrowest horizontal dimension at the surface.
Pits are generally excavated to install manholes, pump stations, or underground tanks. They are also excavated to construct pile caps and other types of foundations or to access or locate existing services.


Figure 3: Pit excavation


TRENCHES AND RETAINING WALLS
A trench is a long narrow excavation which is deeper than it is wide, and open to the surface along its length.
Trenches are generally excavated to install or maintain underground services or to investigate what is beneath the surface.


Figure 4: Trench
When a retaining wall is built, an open excavation becomes a trench formed by an excavated face on one side, and a retaining wall on the other. Usually workers need to access this trench to work, for example for waterproofing the retaining wall.
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