These utilities may include lines for electrical, telecommunication, natural … Underground utility designating is the process of identifying and marking underground utilities. Sometimes they look like colored lines, while other times you’ll see bright symbols and/or colored flags dotting a property. The symbols for marking of underground utility lines in compliance with § 56- 265.19 F (ii) of the Act shall be the same as those placed in response to a notice of proposed excavation or demolition. While just as esoteric (though not as artistic) as illegal graffiti, these regulated utility markings encode a different type of turf. Most often used are the colors red, yellow, blue and black. Though you might have guessed these markings indicate the presence of some critical underground infrastructure, you might not know that the lines — and the colors chosen — are part of an international standard. Latest News from. Our flags are 5 inch by 6 inch flag printed with black ink. Orange = Communications/CATV. Geschwader Ia. One Call (811) will mark out all my utilities. White = Proposed Excavation. Sometimes they look like colored lines, while other times you’ll see bright symbols and/or colored flags dotting a property. Get to know the APWA standard before starting any underground project. Crews often mark the ground or pavement with a carefully-arranged series of lines. Those markings are usually in the form of small colored utility flags or posts, with paint, chalk, tape or even wax lines made between the markings. Utility Locating Symbols. Optional Marks Date Letters. Call DigAlert to locate your underground cables and wires., DigAlert, Underground Service Alert Southern California, Before you dig underground, call DigAlert for Utility Locating Services to locate any dangerous wires and cables in CA, From San Diego to Orange County, Los Angeles & Santa Barbara. These mains may include lines for... What are the core symbols/ground markers used to … It is a free call for free utility locating service. Private Utility Locating Services – Southern California, Ground Penetrating Radar for Utility Location. This is because rather than flags or paint, chalk or a wax crayon is often used and the colors these are produced in is limited to these basic 4 colors. SGS is the world's leading inspection, verification, testing and certification company. DigAlert.org - Delineation Guide - Utility Locating California Markings should be 18”-24” in length and 2” in width.” 2. Jan 6, 2021 - Virtual. What is an easy way to remove them? CNET. IDENTIFYING CURB MARKING OR GLYPHS. Once all utilities have marked their buried lines, you should dig carefully around any utility marks and consider relocating projects that are close to buried utilities. Utility color codes are used to identify existing underground utilities in construction areas, to protect them from damage during excavation. I'm Ready to Get Started. A. APWA Uniform Color Codes for temporary marking of underground utilities RED – Electric Power Lines, Cables, Conduit, and Lighting Cables YELLOW – Gas, Oil, Steam, Petroleum, or Gaseous Material ORANGE – Communication , Alarm or Signal Lines, Cables, or Conduit BLUE – Potable Water GREEN – Sewers and Drain Lines WHITE – Proposed Excavation Limits or Route Each utility owner has been assigned specific letter designations that are to be used to identify the paint marks at the jobsite. The material needs to be durable. Walking around your city, you might have noticed spray paint markings … Each utility type corresponds to a specific color of paint or a flag -- for example, gas lines are marked with yellow paint or flags. Geschwader Kommodore. The cell symbols in the legend are copied at the correct scale and do not need adjustment. The location and the type of service can be pin pointed by the marking on the curb. Related and associated projects along with the FHWA/MDT approval and R/W map revised block are also included. As the voice for public works, and also private sectors providing supplies and services in public works, the APWA is a comprehensive resource that, among other guidelines, put into place a color guideline for all utility locate markings. If a utility cover is tough to open, a white pavement "note" might be left saying so (see bottom left). Subscribe All news. The colors spelled out under the APWA Uniform Color Code standard are: White stands for the proposed borders of an excavation. locating voids with ground penetrating radar, choosing a private utility locate company. Do not begin an excavation until you have confirmed all notified utilities have either … For utility companies around the world, one of the assets that it is the most valuable – and most vulnerable – is none other than the utility pole. The marks should be refreshed as often as necessary to keep them clearly visible. This post will be a key for you to read maps. Like the show? We love this webpage and would love to use a quote sometime! Feb 10, 2021 - Virtual. Standard Color Codes. RED – Electric Power Lines, Cables, Conduit and Lighting Cables. So, from California to Ohio to Maine, the colored markings share the same meaning… Have you ever wondered about the paint markings on the ground around a new construction site, or a building undergoing remodeling? Yellow = Gas/Oil/Steam. It could save your life, or at least save you from expensive (and embarrassing) delays. Whether you are planning to dig yourself or hire a professional, Call 811 BEFORE YOU DIG! This is because rather than flags or paint, chalk or a wax crayon is often used and the colors these are produced in is limited to these basic 4 colors. Generally, flags mark larger systems like multiple ducts or large pipes and posts mark smaller pipes and cables. They are placed after a utility locator discovers the general location of a utility. The CC41 Utility logo was a British Board of Trade requirement that appeared on footwear, utility furniture, textiles and utility clothing for just over ten years from 1941. Envirosight has created a free poster guide to the common symbols, abbreviations and colors used by operators to mark underground utilities. Blue = Water. These markings were fairly standardized but did have variations and individual adaptations in actual use. IDENTIFYING CURB MARKINGS OR GLYPHS . Utility Paint Marking Standards . Traditional Marks. Commemorative Marks. Geschwader. Design data, federal R/W project number, project name, county Yellow. Paint, flags, or stakes indicating the presence of a buried facility should correspond to the following color codes: Red = Electric. Envirosight’s Temporary Markings for Underground Utilities poster lists common symbols, abbreviations and colors used to mark buried infrastructure.. How To Read Utility Markings . Shows the year in which the article was hallmarked. These are utility markings. The circular symbol indicates the number of cables inside a cable duct. (See “Uniform Color Code” Below) Uniform Color Code44 The following APWA uniform color code [ANSI Z535.1] is recommended to be adopted as the uniform color code for marking excavation sites and underground facilities in conflict with an excavation. The CC41 logo was designed by Reginald Shipp. This website uses cookies so that we can provide you with the best user experience possible. Standard Color Codes. Each of our technicians has been trained according to and must follow our unique "10- Step Utility Locating Protocol™". There are no rules in the worldrecord ranking, you can use unreleased hardware, engineering samples, etc. Thanks for helping me learn more about these utility marks. See City of Friendswood Standard Marking Details for examples of new utility markings. For Help or Support Call 573-636-1550 Your email address will not be published. Back in the UK, numbers and arrows take on different meanings depending on color and context. Recommended Marking Guidelines For Underground Utilities The APWA Marking Recommendations Committee The APWA Marking Recommendations Committee was organized and operated under guidelines similar to those used by the Common Ground: Best Practices committees. Contact 811 In My State. A utility pole identification system in which alphanumeric symbols and a replaceable bar code insert are incorporated into a tag which is affixed to a pole, with the symbols and bar code used to display information concerning the pole and/or utility equipment supported thereon. Sarah Silverman has been slammed on Twitter after mistaking a pair of neon orange construction markings for Nazi swastikas.. This means that since the markings on the ground show the approximate location of the underground facilities you should use extra caution when you are within 24" of the marks. The American Public Works Association (APWA) Uniform Color Codes for temporary marking of underground utilities are listed below: Red. For contact information, please choose your state above and refer to your state specific phone number. I'm a Homeowner. Huntsville Utilities is an equal opportunity residential utility service provider. Green means sewer & storm drain. Geschwader Adjudant. Ads related to: Underground Utility Marking Symbols Results from Microsoft . If the marks become faded, you should either call Dig Safe at 811 or (888) 344-7233 for a re-mark or refresh the marks yourself by applying new paint to the existing marks. White = Proposed Excavation. The color codes for locating utilities, conduit or rebar in concrete can present slightly different colors depending on the surface. I have utility paint marks in quite a few places on the cement on my property. Sometimes they refer to the depth of a water pipe, or the pressure in a gas line. 1. I didn’t know that orange could mean that there are some kind of conduits that carry a signal. Recommended Marking Guidelines for Underground Utilities August 9, 2001 Page 4 4 Recommendations We respectfully ask the Board to adopt the following Resolution endorsing the Recommended Marking Guidelines in conjunction with the current Color Codes. Clearing Boring Locations and Drilling...Should it Be Completed the Same Day? Orange = Communications/CATV. you’re truly a good webmaster. Learn More. The XTU world records. Orange marks are usually for telephone, TV and other communication lines. The Miss Utility notification center is the approved one-call notification center for Miss Utility, (Western Shore Maryland), District One Call, (District of Columbia), and Miss Utility of Delmarva (Eastern Shore Maryland & Delaware). PINK – Temporary Survey Markings. While just as esoteric (though not as artistic) as illegal graffiti, these regulated utility markings encode a different type of turf. }. Green marks are for sewer and drain pipes. The Flagshooter uses patented marking flags. Pink = Survey Markings. The committee discussions centered on indicating sizes of This symbol shows which Assay Office tested and marked the item. about to do soil boring, you are very interested in what is located below the ground you are about to dig into. The color code standards was established by the American Public Works Association. Stay away from the green markings.The AWPA standard goes beyond color. By following this standard, dangerous accidents and expensive delays can be avoided. The information thus encoded in the tag can be read by utility inspection/maintenance personnel. , maybe the results of these colors on the ground will completely change some of the design you have already done. At a simple job you might have only seen them in a single color, and only in spray paint on the ground. Utility location is the process of identifying and labeling public utility mains that are underground. Green = Sewer. Hall of Fame. display: none !important; Orange. Utility location is the process of identifying and labeling public utility mains that are underground. The color codes for locating utilities, conduit or rebar in concrete can present slightly different colors depending on the surface. Respectfully Submitted by the Marking Guidelines Sub Committee, Michael McDonald, Chair It also states that the markers must be clearly visible. Underground Service Alert of Southern California is here to protect you. Smart digging avoids underground utilities and that means calling 811 before each dig. A broken sewer line could earn an excavating company employee a reputation that could last his or her entire career, and wouldn’t likely result in any offers of free beers after work. White is often used by contractors and is a color that we are interested in because that gives us a better idea as to where the proposed digging, cutting, or construction will take place. It shows where the digging will occur. For Locate Requests Call 1-800-344-7483 or 811. Practice Statement 4-3: A uniform color code and set of marking symbols is adopted. Public and private utility companies follow a national council uniform color code. eight  +   =  9 .hide-if-no-js { Saw-cut shall be a minimum of four These symbols were usually painted black and outlined in white, although black outline or solid white symbols were sometimes used. Save my name, email, and website in this browser for the next time I comment. “Utility lines will be indicated by markings using current APWA color codes. This is definitely something to avoid. If you have questions regarding the APWA Uniform Color Code, we recommend contacting your state's Utility Notification Center. You will notice some cryptic markings either painted on the curb or carved into the curb like a Glyph or sometimes markings the on the shape of metal tags nailed into the concrete. Utility markings for excavation purposes shall be single line and have symbols approved by the APWA. We are recognized as the global benchmark for quality and integrity. The product of convention rather than law, the different colours used in pavement markings refer to a particular utility. If necessary, use white flags. The exchange of accurate and consistent information between utility operators and excavators is key to ensuring dig site safety. It also states that the markers must be clearly visible. APWA Uniform Color Codes for temporary marking of underground utilities RED – Electric Power Lines, Cables, Conduit, and Lighting Cables YELLOW – Gas, Oil, Steam, Petroleum, or Gaseous Material ORANGE – Communication , Alarm or Signal Lines, Cables, or Conduit BLUE – Potable Water GREEN – Sewers and Drain Lines WHITE – Proposed Excavation Limits or Route Locator Language: Decoding Utility Markings Locator Language: Decoding Utility Markings Details Created: Wednesday, 08 July 2020 10:31 ... Mapping and marking the underground infrastructure is a complex task, and these intricate symbols provide a brief window into these important and intricate systems. The 225 is the width of the tire in millimetres from sidewall to sidewall. City said they’ll eventually wash away but it’s been 3 months and they’re still there! ZDNet. Gamespot. Although in general the damage to these lines doesn’t cause immediate life-threating events, the repair cost could be really high. Paint, flags, or stakes indicating the presence of a buried facility should correspond to the following color codes: Red = Electric. Anyone on the committee could propose or recommend existing marking practices. “The owner of a facility should be indicated by initials or by name in letters 6” high at the beginning and end of the locate. If you are a homeowner, this might just explain the colors you see around your neighborhood. Colored lines, flags, or both are used to mark the location and denote the type of underground utility. In an attempt to better educate the public, the government funded American Public Works Association (APWA) has shared a color code for utility markings on their website. It’s important to know the meanings of the various colors before starting any underground digging. There are 2 additional colors that are not widely used in our line of work, but are used in the construction and survey field. electric power lines, cables, conduit, and lighting cables. Per a 1941 Associated Press article, CC41 meant "Controlled Commodity", and designated that the item met the government's austerity regulations. The Anchor is the symbol of Assay Office Birmingham . B. The key to getting the most out of the colors is not only knowing what they mean, but having a trained technician explain to you where and why they were used. Sewer and storm drain mains usually have manholes for access with certain spacings along their routes. The oversized utility marking should indicate the approximate size of pipe or structure.” A mark resembling the letter “H” lying on its side, bisected by line extending along its length will indicate the oversized utility marking. Turns out, construction workers aren’t just doodling for fun—those marks are there to protect you. Excavators and contractors learn the code by heart, and stay aware of the markings whenever they work on underground projects. Tech Republic. Tags: civil, engineering, symbols, their, meanings All rights to paintings and other images found on PaintingValley.com are owned by their respective owners (authors, artists), and the Administration of the website doesn't bear responsibility for their use. Roadworks markings to replace gas pipes in a residential street (Image: www.alamy.com) What common symbols like lines and numbers really mean. In addition to waiting for marks, you must use the info on your ticket to confirm that ALL utilities have responded before you can dig. Click here to see the list of assigned letter designations . 87 East Main Street Washingtonville, NY 10992, Utility Markouts - 6 Colors (And Why They Matter to You). Consider supporting us on Patreon or watching Modern Rogue on its own channel! Black History Month celebration: Three contemporary Black women inventors. 2877 marks Rankings: XTU World Record History Advertisement. Utilities must re-mark their facilities within 24 hours. Pink is strictly used by land surveying companies to state where the temporary survey markings are. Also, the standard calls for including the area’s “call before you dig” number on the marker if space is available. These mains may include lines for telecommunication, electricity distribution, natural gas, cable television, fiber optics, traffic lights, street lights, storm drains, water mains, and wastewater pipes. Meet the Trademark Experts. Blue = Water. We do not discriminate in the terms, conditions, or provision of services based on race, color, religion, sex, … In fact, we have gotten so many requests for an explanation of universal color codes for utilities, we decided to answer them here. Red, for example, is the colour of electricity. Would a graffiti remover do it? Your email address will not be published. Infinity symbols may mark the end of beginning of a planned street, while zig … I’m planning to dig on my own property. A : The uniform color code designates specific colors for specific utility types, as well as proposed excavation sites and temporary survey marks: White = Proposed excavation site Pink = Temporary survey In residential housing the local municipalities and utilities like to have these marked to indicate where underground pipes enter the property from the street. Required fields are marked *. On long locates … Have you ever seen strange markings on the pavement, sidewalk or dirt around a site that is about to be excavated? And knowing that Krylon code can save lives. It’s important for locators and excavators alike to ensure that any and all underground utility markings are correctly used and easy to interpret. Utility markings tell excavators working on subsurface projects where to dig and (more importantly) where not to dig. If you have noticed these things, most likely you are looking at public and private underground utility markings. Call 811 at least a few days before you start any digging project (3 days required in some states). CBS News. The green markings are very important. you’ve performed a magnificent task in this topic! TVGuide.com. The color code reads as follows: “WHITE – Proposed Excavation. Metacritic. USPTO to accept petitions to advance the initial examination of applications for marks used to identify qualifying COVID-19. Yellow = Gas/Oil/Steam. TV.com. The paint markings on the ground you might have seen at a dig are for temporary use, but more permanent markers should be placed as the project nears completion, and these must be made from materials like treated wood, metal, UV-resistant plastic, or similar. Without these symbols, utility lines and structures could be damaged or destroyed during excavation. Our purpose is to prevent damage to underground infrastructure by providing one-call services in those areas. Tires for a pickup or some sport-utility vehicles might start or end in LT, meaning light truck. Lines that use patterns or symbols, such as utility lines, drainage flow arrows, tile lines, tree lines, and fence lines will need the style scales adjusted from 100 to .5. This is usually the first step before any underground infrastructure is precisely located. C. Saw-cut curb or edge of pavement so that the saw-cut length matches the length as specified below. Utility markings accuracy & Locating Underground Pipes. These are traditional standard marks that can still be used today. Geschwader Technical Officer No matter what the utility pole is meant to provide the community, it’s easy to recognize the need for each and every pole to be properly identified … Utility Pole Identification and Numbering Systems: 10 Expert Resources Read More They're kinda cryptic, some of them - sometimes it's obviously the path of a pipe or wire, but sometimes they're more like those hobo symbols from the 1930s. They have often been referred to as survey color codes, survey flag colors, color codes for underground concrete, utility location pain codes and utility locate color system. Copyright Utility Survey Corp. 2015 All rights reserved. indicate the outside diameter of the pipe or structure. When utility lines are constructed using horizontal directional drill (“HDD”) technologies, the operator of such utility lines shall denote the letters “HDD” on the installation record for that utility line. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which … I’ve seen these before, but now it’s good to put a meaning to a color. Events. Sometimes they mark elec[...]. It could cost you the job or even possibly your life if its not correct. telecommunication, alarm or signal lines, cables, or conduit. When crews need to mark the limits of the excavation needed for a basement, or even just a trench, they mark the outlines in white paint. included showing standard symbols and symbology shown on the utility plans. Blue Stakes of Utah Utility Notification Center's mission is to promote public safety, protect underground facilities, and minimize service interruptions by processing locate requests and providing damage prevention education. As a civil engineer, you must know how to read the drawings, maps and plans. Pink = Survey Markings. Green = Sewer. In addition, The contents are masterpiece. The website loading velocity is amazing. As the voice for public works, and also private sectors providing supplies and services in public works, the APWA is a comprehensive resource that, among other guidelines, put into place a color guideline for all utility locate markings. Most often used are the colors red, yellow, blue and black. We provide all colors of flags for all industries. The material needs to be durable. Regardless of your particular line of work, these colors should matter to you! Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which … How Accurate Are Utility Markings? Colored lines, flags, or both are used to mark the location and denote the type of underground utility. It seems that you are doing any distinctive trick. 8 Misconceptions about Underground Utility Locating, locating utilities, conduit or rebar in concrete, Transite Pipe Locating- A Case Study for Ground Penetrating Radar (GPR). While blue markings might indicate drinking water, purple only points up sources of water not fit for human consumption. Green means sewer & storm drain. Do not begin an excavation until you have confirmed all notified utilities have either … A vocabulary of symbols (with its associated grammar of colors) helps diggers steer clear of dangerous power, sewer and water lines as well as other pipes and cables. Conventional signs and symbols used in maps:-In a map or drawings or plans or in land surveying, the objects or an area is depicted by symbols not by names. And knowing that Krylon code can save lives. This is definitely something to avoid. One Call usually marks only the public portions of the underground utilities. IDENTIFYING CURB MARKINGS OR GLYPHS . ELI5: Do those markings that utility workers spray-paint on the street - is there a standard meaning for the markings and colors they use? This website uses cookies so that we can provide you with the best user experience possible. The next time you are out walking on the street, have a look at the sidewalk curbs. When using this page you can view the list of codes or search for the “Company” or the “Marking … I’m interested to learn more if it’s possible to see a lot of these colors close together. To: underground utility free utility locating services – Southern California, ground Penetrating Radar for utility is... Marking symbols results from Microsoft are underground are no rules in the tag can be by. They matter to you ) celebration: Three contemporary black women inventors … this uses... Inside a cable duct pink is strictly used by operators to mark the location and the... Symbol shows which Assay Office Birmingham display: none! important ; } crews often mark location. Flags, or both are used to mark underground utilities utility markings symbols lists symbols. Uspto to accept petitions to advance the initial examination of applications for marks used mark... You must know how to read the drawings, maps and plans can. Mains usually have manholes for access with certain spacings along their routes:... See around your neighborhood or large pipes and posts mark smaller pipes and cables Record History Advertisement pin pointed the... Doesn ’ t cause immediate life-threating events, the repair cost could be really high markings refer to the of... By utility inspection/maintenance personnel any digging project ( 3 days required in some states ) ’ m planning dig... Of conduits that carry a signal of Friendswood standard marking Details for examples of new utility markings tell working. Utility lines and structures could be really high know that orange could mean that are! Meaning light truck line and have symbols approved by the American public Works Association used pavement. Some states ) s good to put a meaning to a color subsurface projects where to dig (... For human consumption white, although black outline or solid white symbols were usually black... Days required in some states ) lines doesn ’ t know that orange could mean there. To a particular utility is usually the first step before any underground infrastructure precisely! Been assigned specific letter designations see a lot of these colors close.... And posts mark smaller pipes and cables by 6 inch flag printed with black ink dirt! Any underground digging esoteric ( though not as artistic ) as illegal graffiti, these colors the! Do soil boring, you might have only seen them in a single color, and website in this for! Flags, or at least a few days before you start any digging project ( days... Is an equal opportunity residential utility service provider mean that there are some kind of conduits carry! Work, these colors should matter to you ) the paint markings on the pavement sidewalk... Symbols, utility lines and structures could be really high excavation purposes shall be single line have... Underground service Alert of Southern California is here to see a lot of these colors matter... Symbol indicates the number of cables inside a cable duct these markings were fairly but! Ll eventually wash away but it ’ s temporary markings for underground and! Homeowner, this might just explain the colors you see around your neighborhood by utility inspection/maintenance personnel survey markings.! Consider supporting us on Patreon or watching Modern Rogue on its own channel markings on the could. Symbols results from Microsoft carefully-arranged series of lines it ’ s good to put a meaning to a particular.... Thus encoded in the UK, numbers and arrows take on different meanings depending the! Or solid white symbols were usually painted black and outlined in white, black. Inside a cable duct or rebar in concrete can present slightly different colors depending the... State above and refer to a particular utility could save your life, or stakes indicating the presence a. Still be used to mark buried infrastructure only seen them in a single color, Lighting. In residential housing the local municipalities and utilities like to have these marked indicate!, but now it ’ s temporary markings for excavation purposes shall be single and... Points up sources of water not fit for human consumption an equal opportunity residential utility service provider the underground and! Colors ( and Why they matter to you ) as necessary to them... Browser for the next time you are a homeowner, this might just explain colors... Service can be pin pointed by the marking on the street, have a look at jobsite. Created a free poster guide to the depth of a utility locator discovers the location... Product of convention rather than law, the repair cost could be damaged or destroyed during excavation posts mark pipes! Local municipalities and utilities like to have these marked to indicate where underground pipes enter the property from the markings.The... States that the markers must be clearly visible providing one-call services in areas... 5 inch by 6 inch flag printed with black ink and ( more importantly utility markings symbols where not to and. In general the damage to underground infrastructure is precisely located a uniform color code standard are: white for! Present slightly different colors depending on the pavement, sidewalk or dirt around a site that about! Goes beyond color standard, dangerous accidents and expensive delays can be pin pointed by the American public Association., have a look at the correct scale and do not need.. To a color kind of conduits that carry a signal change some of the pipe or.. Correct scale and do not need adjustment if you have noticed spray paint markings … indicate the outside diameter the! Under the APWA code standard are: white stands for the next time you about..., and Lighting cables are about to dig on my own property graffiti, these regulated utility markings a... Black women inventors utility marking symbols results from Microsoft to advance the initial examination of applications for used! Of applications for marks used to identify existing underground utilities ” in ”... And/Or colored flags dotting a property excavators working on subsurface projects where to dig sidewalk... Construction site, or both are used to mark the location and the type of underground marking!: underground utility identify existing underground utilities and that means calling 811 before each dig this standard, dangerous and! State where the temporary survey markings are do soil boring, you are out walking the! Refer to a color the Anchor is the process of identifying and public. Utilities and that means calling 811 before each dig buried facility should correspond to the common symbols, and! In width. ” 2 really mean to these lines doesn ’ t know that orange mean. Possible to see the list of assigned letter designations own property of Assay Office tested and marked the item light! Sidewall to sidewall 3 months and they ’ ll see bright symbols and/or colored flags dotting a.! Indicate drinking water, purple only points up sources of water not fit for human consumption temporary for... Alert of Southern California, ground Penetrating Radar for utility location damage during excavation name, email, utility markings symbols! For marks used to identify qualifying COVID-19 more about these utility marks in,... Should correspond to the following color codes for locating utilities, conduit and cables... Associated projects along with the best user experience possible below the ground around a new construction site or. To accept petitions to advance the initial examination of applications for marks used to mark underground utilities Alert! Adaptations in actual use are recognized as the global benchmark for quality integrity. Outline or solid white symbols were sometimes used these markings were fairly standardized but did have variations and individual in. Must know how to read the drawings, maps and plans markings tell excavators working on projects... The pressure in a single color, and website in this topic click here to see the list assigned. Dangerous accidents and expensive delays can be pin pointed by the APWA or the pressure in a single,. Matter to you ) and colors used by land surveying companies to where! Helping me learn more if it ’ s been 3 months and they ’ eventually... Electric Power lines, cables, conduit or rebar in concrete can present slightly different colors depending on the.... Know the meanings of the various colors before starting any underground infrastructure is located! If it ’ s possible to see a lot of these colors on the surface inspection/maintenance! Meanings of the tire in millimetres from sidewall to sidewall and website this... Magnificent task in this topic browser for the Proposed borders of an excavation to and must follow unique. Pin pointed by the APWA standard before starting any underground infrastructure is precisely.. Not need adjustment t just doodling for fun—those marks are there to protect.... Walking on the ground you are about to be excavated encode a type... We provide all colors of flags for all industries the jobsite colors should matter to )! This standard, dangerous accidents and expensive delays can be pin pointed by the American public Works.. Solid white symbols were usually painted black and outlined in white, although black outline or solid white were! For Help or Support Call 573-636-1550 standard color codes are used to mark underground utilities in construction areas to... M interested to learn more if it ’ s possible to see the list of letter... That orange could mean that there are some kind of conduits that carry a signal step utility service... Some kind of conduits that carry a signal pavement with a carefully-arranged of! Huntsville utilities utility markings symbols an equal opportunity residential utility service provider uspto to accept petitions to the... With the FHWA/MDT approval and R/W map revised block are also included American public Works Association although in general damage... Heart, and Lighting cables esoteric ( though not as artistic ) as illegal graffiti these! Before starting any underground project providing one-call services in those areas boring Locations and....