Photo: Cole Keister

What is orange underground piping?

Orange – Communication & CATV When you see orange paint on the pavement, that's a sign that important communication cables are buried beneath the ground. These must be avoided to prevent vital components of communications infrastructure from being damaged.

gpronecall.com - A Brief Guide to Color-Coding Underground Utilities | GPR OneCall

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A Brief Guide to Color-Coding Underground Utilities

Anyone who has worked in construction knows that random colorful lines on the streets aren’t acts of vandalism — they’re color-coded messages that construction crews use to communicate vital information during projects. Each color corresponds to a different underground utility that must be accounted for when digging and drilling in the area. As Brooklyn, NY’s leading GPR scanning service, GPR One Call is the Picasso of pavement when it comes to locating underground utilities. Let’s take a closer look at the color code we follow, the American Public Works Association (APWA) Uniform Color Code using ANSI/NEMA standard Z53.1.

Red – Electricity

A red line of spray paint indicates electrical wires underground. It’s crucial to know where electrical wires are, because with metal equipment, a mishap that involves digging up live wires could be potentially fatal.

Yellow – Gas, Oil, Steam, & Chemical

Yellow paint is sprayed on pavement that lies on top of underground pipes that move gas, oil, steam, and other chemicals into buildings, generally for the sake of providing heat and energy. Puncturing one of these pipes during digging could cause a big mess, and even a potentially explosive situation.

Orange – Communication & CATV

When you see orange paint on the pavement, that’s a sign that important communication cables are buried beneath the ground. These must be avoided to prevent vital components of communications infrastructure from being damaged.

Blue – Water

Quite fittingly, blue markings indicate that water pipes are underground in a construction area. Needless to say, bursting a water pipe would cause serious complications for a construction project, not to mention the folks who use buildings in the surrounding area.

Green – Sewer & Storm Drain

We’re not going to question why green stands for sewers and storm drains, but you certainly don’t want to miss these markings when digging on a construction site. It could create a serious health hazard and significantly delay the project’s completion. Pink markings are somewhat of a wildcard, as they have no specific meaning. However, they are generally used when there is an unidentified utility or for a surveyor to get a general reference point for the construction project.

White – Proposed Excavation

White lines are sprayed onto the pavement wherever excavation has been proposed to occur. Ideally, white lines should not overlap with or cross anywhere near different-colored lines, unless a specific plan has been made to work around the utilities underground. The colorful lines on the pavement at construction sites are what help us conduct excellent concrete imaging in Brooklyn, NY, on each project, despite sometimes challenging conditions. Contact GPR One Call today to talk to the underground location experts!

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What are the orange things on power lines?

energized.edison.com - What Are Those Balls That Hang on Power Lines? - Energized by Edison

Have you ever seen those big yellow, orange, white or red balls hanging from power lines? Well, those balls are visibility markers. They weigh about 17 pounds each, and you will often find them near mountain passes, in deep valley areas, near major freeway crossings and around airports. Visibility markers are placed on power lines to make the conductor crossings visible to aircraft pilots. The conductors and skyline wires become almost invisible against the terrain when flying. Moreover, helicopters and small planes often fly low in mountain passes or over freeways while approaching airports. Spherical visibility markers, specifically in “aviation orange, white or yellow,” are required by the Federal Aviation Administration, like those near airports. Southern California Edison has identified additional power lines within its service area that are particularly hard for pilots to see and proactively installed visibility markers as enhanced safety measures. So, next time you’re driving past power lines with marker balls, you can proudly share that they’re used for the safety of flying aircraft and are critical to protecting the electrical infrastructure.

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