Hi Sarah, the depth and width of an excavation should be determined by factors such as the purpose of the excavation, soil type, groundwater conditions, surrounding structures, and safety regulations.
The project’s scope will dictate the initial estimates, but you must also consider the soil’s stability – different types require different support systems.
Groundwater conditions can affect the stability and may require dewatering procedures. Nearby structures could impose restrictions on your excavation to prevent undermining their foundations.
Finally, always follow local and national safety regulations, including those for trench widths and depths.
Remember, every site is unique and requires careful evaluation.
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