Changed excavation conditions and an uncertain service location
Excavation work is planned beside existing services. Heavy rain has changed the ground appearance since the previous assessment, and the current service position is not reliably confirmed. The proposed entrance is an improvised unstable route. Workers want to enter briefly to inspect the bottom, reasoning that a short visit is harmless. A material pile and a delivery vehicle may add loads near the excavation. The foreperson must avoid exposing someone merely to determine whether the area is safe. The case provides no depth, soil parameters, support design, or universal safe distance. Appropriate qualified assessment, suitable protection, access, and coordination are required for the actual conditions rather than a guessed threshold.
1. What conditions must be addressed before affected entry or excavation?
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Clarify existing services and necessary protection, assess the changed ground and relevant loads, establish appropriate excavation protection and stable suitable access, and coordinate the work under the relevant plan and competent process. A prior release or brief exposure does not establish current safety.
2. Why should no single depth or distance be invented here?
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The case lacks the technical inputs and applicable detailed basis. Actual requirements depend on the relevant Swiss rules, site conditions, design, and method. A guessed number would not authorize safe entry or support; identify and obtain the needed basis instead.