Which symbols typically represent existing utilities in design documents?

In design documents, existing utilities are commonly represented by open or dashed symbols. This approach helps differentiate these utilities from proposed features or new installations. The use of dashed lines signals to the viewer that these utilities are already in place and not part of the new construction or development plans. This distinction is crucial for engineers, planners, and construction teams to avoid conflicts during the construction process, ensuring that existing utilities are either preserved or properly accounted for during any excavations or modifications to the site.

The clarity provided by open or dashed symbols aids in better visual communication of the existing infrastructure, allowing all stakeholders to recognize potential challenges or requirements when working in proximity to these features. By using this standardized representation, everyone involved can have a mutual understanding of the site conditions, which is vital for effective planning and execution.