Please forward this error screen to orangecrush. This article includes a list of references, but its sources remain unclear because it has insufficient inline citations. Utility location is the process of identifying underground utility labeling public utility mains that are underground.
Before digging, local governments often require that the underground systems’ locations be denoted and approved, if it is to be in the public right-of-way. Because of the many different types of materials that go into manufacturing each of the different types of underground lines, different detection and location methods must be used. A few utilities are permanently marked with short posts or bollards, mainly for lines carrying petroleum products. This may be done because of venting requirements, and also serves to indicate the location of underground facilities that are especially hazardous if disturbed. Call before you dig”, “Know What’s Below!
Failure to call such a number ahead of time may result in a fine or even a criminal charge against a person or company, particularly if such negligence causes a major utility outage or serious accident, or an evacuation due to a gas leak. Australia: The national “dial before you dig” number is 1100. Canada: In Canada, there is no unified number for the country. However, it has the “Click Before You Dig” website that provides access to the hotline for each of the provinces. 8-1-1 telephone number is used for this purpose across the United States. In the rest of the UK, there is no dial-before-you-dig service.
Utility color codes are used to identify existing underground utilities in construction areas, to protect them from damage during excavation. Colored lines, flags, or both are used to mark the location and denote the type of underground utility. A special type of spray paint, which works when the can is upside-down, is used to mark lines, often in a fluorescent color. Flags may also be an advertisement for a company which has installed an irrigation system for lawns or gardens. In this case, each sprinkler head is usually marked, so that landscaping crews will not cover or bury them with soil or sod, or damage them with tractors or other construction equipment while digging holes for trees, shrubs, or other large plants or fenceposts. In Canada, the provinces adopt the use of APWA Uniform Color Codes. For more information, see the section below for the United States.