During surveying and construction projects, surveyors, contractors, and other construction professionals have to let others know what’s lying under the ground’s surface. This can prevent excavators from digging into the ground with buried utility pipelines, which can get damaged and release liquids, gas, or even toxic chemicals. The most effective way to inform others of buried pipelines is to anchor marking flags into the ground. Not only can this be a safety measure, but it can also help engineers and architects plan their designs. Here on Engineer Warehouse, marking flags are available in different dimensions: 2 1/2 by 3 1/2 inches, 4 by 5 inches, and 5 by 8 inches. Some of them also come with wire, plastic, or fiberglass staffs that have varying lengths ranging from 11.5 to 36 inches. These marking flags display different color codes, like red for electric cables, orange for telecommunication lines, yellow for gas lines, green for sewage and drainage, blue for potable water, pink for temporary survey markings, and white for proposed excavation.