![]() Before any excavation work can begin, they are liable to contact the concerned companies and organisations to notify them about the proposed excavation activity so that the existing underground utilities can be determined and marked. Utility systems are buried underground due to the nature of their function, as well as convenience and aesthetics.Įxcavators are required to check and locate these lines before any digging takes place. These lines/flags help mark the location and indicate the type of utility that is buried underground. ![]() There are different types of utilities and in order to tell them apart, either coloured lines or flags, or sometimes both are used. Underground utility colour codes are used to differentiate and identify underground utilities to protect it from potential damage during excavation. Posted on at 11:17 AM by Jim Burns in Blog Underground Pipes Underground Utilities What are underground utility colour codes? Underground utility colour codes explained
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