Keeping track of work areas and whats underground can be tricky, so organizations like digalert mandate the use of white paint, chalk, flour or flags to mark off construction zones, plus uniform color codes developed by the american public works association apwa for the temporary marking of underground utilities. Utility markouts 6 colors and why they matter to you by utility survey corp. Utility markouts 6 colors and why they matter to you. If you have noticed these things, most likely you are looking at public and private underground utility markings. Colored lines, flags, or both are used to mark the location and denote the type of underground utility.
The utility members listed on your ticket can respond in a number of different ways, including marking the location of their underground facilities at your site, contacting you via email or phone to advise you that your site is clear from any conflict with their underground facilities, or by providing you information about the location of their. Working to reduce damages to the underground infrastructureensuring public safety, environmental protection, and the integrity of services by promoting effective damage prevention practices. Anyone who plans to dig should call 811 or go to their state 811 centers website a few business days before digging to request that the approximate location of buried utilities be marked with paint or flags so that you dont unintentionally dig into an underground utility line. Electric power lines, cables or conduit, and lighting cables. Recommended marking guidelines for underground utilities august 9, 2001 page 11 11 marking offsets if every underground facility, road or permanent surface ran north to south or east to west, this would be a viable option. When marking out a dig site, do not use any color other than white see reverse side for color code information. Standard color markings for underground facilities transportation.
Color coding for underground infrastructure have you ever wondered about the paint markings on the ground around a new construction site, or a building undergoing remodeling. On october 20th, 2007, georgia public service commission rule 51594. Publication of this paper sponsored by committee on utilities. Working safely around underground utilities at excavation sites reference 1926 subpart p in the middle of the city, out in the suburbs, and perhaps even in the middle of nowhere, there is a. Uniform color code for marking underground facilities arizona 811. Other colors such as purple and pink are sometimes used for unknownunidentified underground utilities. Premarking of the outer limits of the proposed excavation or marking the centerline and width of proposed lineal installations of buried facilities. The first section of the rule describes white lining. Call 811 or 8887217877 or request a locate damaging a utility could result in costly fines, inconvenient outages, injury or even death. Public and private utility companies follow a national council uniform color code. Nondetectable warning tape for the protection, location and identification of underground utilities. Oil or steam orange cable or telephone blue water green sewer purple reclaimed water pink temporary survey markings. Anyone who plans to dig should call 811 or go to their state 811 centers website before digging to request that the approximate location of buried utilities be marked with paint or flags so that you dont unintentionally dig into an underground utility. Apwa uniform color code for marking underground facilities.
Utility locating colors and their meanings penhall. These are the colors our utility members will use to mark their underground facilities at your dig site proposed excavation communication catv temporary survey marking electric water reclaimed water irrigation slurry gasoilsteam sewer storm drain apwa uniform color code app coming soon the booklet was brought to you by usa north 811. Call julie before you dig for safe digging in illinois. The information contained within appendix b was approved by the cga board of directors on september 24, 2004.
The facility color and facility owner identity may be added to white flags or stakes. A uniform color code and set of marking symbols is adopted. Underground facilities shall be marked in accordance with the following designated color code. Tape contains the printed identification of the utility line buried below it and it comforms with apwa color code specifications for underground tape systems. Color codes for utility markouts utility survey corp. Create tickets for digging or design anytime with estake stake contact arizona 811 two working days before you dig. Apwa uniform color codes for temporary marking of underground utilities. Anyone who plans to dig should call 811 or go to their state 811 centers website before digging to request that the approximate location of buried utilities be marked with paint or flags so that you dont unintentionally dig into an underground utility line.
Yellow gas, oil, steam, petroleum, or gaseous material. Underground warning tape is the last line of defense for your underground utility. Pink is strictly used by land surveying companies to state where the temporary survey markings are. It alerts workers of buried cables, pipes, and utilities buried below. Reduce worker risk of digging near underground electrical, gas, water, telephone, communication, or other utility lines with underground warning tape. Georgia 811 is a nonprofit corporation dedicated to preventing damage to georgias underground utilities and promoting public safety. Provide physical access to the dig site for utility locators. Color codes underground utility marking global gpr.
Contact us call 811 or 18008920123 to place a local request 3275 executive drive joliet, il 60431 administrative offices. Orange communication, alarm or signal lines, cables, or conduit. It is critical for all pipeline and other contractors to accurately locate and identify pipelines utilities before any excavation begins. Best practices for locating underground utilities, asbuilt surveys and drawings importance of locating buried utilities. All of our underground utility marking tape meets the american public works association apwa uniform color code standard. Arrows should be placed at the ends of markings to indicate that the underground. Letter to utility operators, excavators and locators. Marking buried splices, valves, and manholes the proposed guidelines are all the committee could reach consensus on. If any evidence is found, contact the owner, the engineer and wait until the systems have been located and marked check for any new construction, utility trenches or evidence of new utility installations check to see if all services and utility laterals. Color codes underground utility marking global gpr services. Red electric power lines, cables, conduit, and lighting cables. So, from california to ohio to maine, the colored markings share the same meaning. Pre marking of the outer limits of the proposed excavation or marking the centerline and width of propose lineal installations of buried facilities. Uniform color code for marking underground facilities know whats below.
The apwa, through its utilities and public right of way committee, has developed and published guidelines for temporary marking of underground utilities which include an apwa uniform color code in order to minimize damages during excavation and similar operations in which the earth or the earths surface is moved, removed, or displaced. Remember, call texas811 before digging to avoid hitting any of these underground utility lines, no matter what the job is. Empire warning tape, available in apwa standard colors. It provides universal understanding of the marking of underground utilities for both construction and engineering projects. Recommended marking guidelines for underground utilities. Apwa uniform color code for marking underground utility lines. The tolerance zone in arizona includes the width of the facility if indicated plus 24 measured from each side of the marked facility.
Unlock gates, provide gate codes and remove dogs or other pets from the yard. A special type of spray paint, which works when the can is upsidedown. See uniform color code below uniform color code44 the following apwa uniform color code ansi z535. Each color of mark or flag represents a different type of underground facility. We follow the american public works association uniform color codes red electric yellow gas. Proposed excavation use white marks to show the location, route or boundary of proposed excavation.
This transmitted frequency can be traced for considerable distances across a site for underground utility location and marking and for utility mapping. Electrical power lines, cables, conduit and lighting cables. Utility color codes are used to identify existing underground utilities in construction areas, to protect them from damage during excavation. Underground tape helps prevent accidental digins that result in loss of revenue, repair expense, or damage to life and property. Contact arizona 811 two working days before you dig. Uniform color code red electric power lines, cables, conduit and lighting cables yellow gas, oil, steam, petroleum or gaseous materials orange communication, alarm or signal lines, cables or conduit blue potable water green sewers and drain lines purple reclaimed water, irrigation and slurry lines typical marking tolerance zone tolerance zone 24 600 mm. Marking these helps excavators use the safest measures possible when digging on a job.
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