Infatuation Rules
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What is orange piping?

Green marks are for sewer and drain pipes. Sewer and storm drain mains usually have manholes for access with certain spacings along their routes. Orange marks are usually for telephone, TV and other communication lines.

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Underground utility designating is the process of identifying and marking underground utilities. These utilities may include lines for electrical, telecommunication, natural gas, water, sanitary sewer, storm drains, etc. They are usually marked on the surface of the ground by spray paints and pin flags using their corresponding colors. The color codes for the marks generally follow the guidelines recommended by American Public Works Association (APWA): Red Electric power lines, cables, conduit, and lighting cables Yellow Natural gas, oil, steam, petroleum, or other gaseous or flammable materials Green Sanitary sewers and drain lines Orange Telecommunication, alarm or signal lines, cables, or conduits Blue Potable water Underground utilities marked red or yellow are most dangerous if the situation is not taken seriously, just like when you encounter red or yellow traffic lights. You really want to keep as far away from high voltage electrical cables or natural gas pipes as possible when conducting drilling, digging, excavation or other ground-intrusive work. It’s worth noting that some gas service lines are small plastic pipes and they can be easily broken, even just by a hit from a shovel. Green marks are for sewer and drain pipes. Sewer and storm drain mains usually have manholes for access with certain spacings along their routes. Orange marks are usually for telephone, TV and other communication lines. Although in general the damage to these lines doesn’t cause immediate life-threating events, the repair cost could be really high. The yearly repair costs for telecommunication cables due to ground-intrusive work have been estimated as hundreds of millions of dollars in the U.S. alone. In addition, the revenue lost for the users due to the downtime could be much higher than the repair cost itself, especially for those high capacity fiber optic cables. Blue marks are for potable/drinking water. Water pipes usually have valves accessible on the ground surface along their main routes and service lines. Other colors such as purple and pink are sometimes used for unknown/unidentified underground utilities. Also, a related color in underground utility designating/locating is white, which is usually used for marking proposed areas for excavation or other ground-intrusive work. To help you to remember the color codes for underground utilities, use the symbolic representations and explanations in the table below: Color Code Symbolic Representation Explanation Red Red Traffic Light Stop! Electrocution is an imminent danger! Yellow Yellow Traffic Light Warning! Limited time window to respond in a situation like gas leak ! Green Green Traffic Light Let sewer water and storm water go. Orange Traffic Safety Color orange is a way of visual communication for safety as shown in orange signs, cones and safety vests: I’m here, don’t hit me! Blue Blue Sky Like air under the blue sky, drinking water under blue marks is vital for our survival. The best policy is to ensure you have a private utility locator who is experienced! At Utility Survey Corp., all our technicians have years of experience with underground utility locating and follow our proprietary "10-Step Utility Locating Protocol™".

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What color is underground water line?

Red: Electric power lines, cables or conduit, and lighting cables. Yellow: Gas, oil, steam, petroleum, or gaseous materials. Orange: Communication, alarm or signal lines, cables or conduits, and fiber. Blue: Potable water.

APWA Uniform Color Code for Marking Underground Facilities

Underground facilities shall be marked in accordance with the following designated color code: White White: Pre-marking of the outer limits of the proposed excavation or marking the centerline and width of proposed lineal installations of buried facilities. Pink Pink: Temporary Survey Markings. Red Red: Electric power lines, cables or conduit, and lighting cables. Yellow Yellow: Gas, oil, steam, petroleum, or gaseous materials. Orange Orange: Communication, alarm or signal lines, cables or conduits, and fiber. Blue Blue: Potable water. Purple Purple: Slurry, irrigation and reclaimed water. Green Green: Sewers, drainage facilities or other drain lines. Pre-marking of the outer limits of the proposed excavation or marking the centerline and width of proposed lineal installations of buried facilities.Temporary Survey Markings.Electric power lines, cables or conduit, and lighting cables.Gas, oil, steam, petroleum, or gaseous materials.Communication, alarm or signal lines, cables or conduits, and fiber.Potable water.Slurry, irrigation and reclaimed water.Sewers, drainage facilities or other drain lines. Permanently Marking Underground Facilities The following recommendations shall be followed when permanently marking underground facilities: Markers must be clearly visible. Marker material shall be durable in nature. (Treated Wood, Metallic, UV Resistant Plastics, etc.) Mark culverts if not readily visible. Mark both ends of all non-visible underground facilities. Identify type of underground facility if not recognizable from the surface. It is also recommended that your state's Call Center number appear on the marker if the marker is of sufficient size. If you have questions regarding the APWA Uniform Color Code, we recommend contacting your state's Utility Notification Center. For contact information, please choose your state above and refer to your state specific phone number.

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