MARKING GUIDELINES

Statewide Marking Guidelines for Underground Line Owners                         

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Following are statewide marking guidelines:

  • The width of each mark should be approximately 2".
  • The length of each mark should be approximately 12" - 18".
  • The distance between marks depends on site conditions, but should be no greater than 20'.
  • Company identification should be painted at reasonable intervals to allow quick identification.
  • End marks should contain arrows if line continues.
  • The size of any painted text does not expand the tolerance zone.

 MARKING SAMPLES
(Company names used below are for illustrative purposes only.)

LINE

 

http://www.illinois1call.com/images/marking_guidelines/line_NICOR.jpg

.Any single underground line less than 12" in diameter.

http://www.illinois1call.com/images/marking_guidelines/markin2.jpg

http://www.illinois1call.com/images/marking_guidelines/markin3.gif

Single conduit

http://www.illinois1call.com/images/marking_guidelines/markin4.jpg

 

CORRIDOR

 

http://www.illinois1call.com/images/marking_guidelines/markin5.gif

Used when multiple underground lines cannot be specifically delineated.  Mark should represent located outside edges and number of underground lines whenever possible.

http://www.illinois1call.com/images/marking_guidelines/markin6.jpg

 

OVERSIZED

 

http://www.illinois1call.com/images/marking_guidelines/markin7.gif

Any underground line 12" or greater.  Marks should represent outside edges of the underground line.

http://www.illinois1call.com/images/marking_guidelines/markin8.jpg

 

DUCT PACKAGE

 

http://www.illinois1call.com/images/marking_guidelines/markin9.gif

Marks should represent outside edges of the underground line whenever possible.

http://www.illinois1call.com/images/marking_guidelines/markin10.jpg

 

HIGH PRESSURE GAS LINES

 

http://www.illinois1call.com/images/marking_guidelines/line_hp_gas.jpg

Company should indicate that the line is high pressure gas.

http://www.illinois1call.com/images/marking_guidelines/markin12.jpg

 

TERMINATION POINT

 

http://www.illinois1call.com/images/marking_guidelines/markin13.gif

 

http://www.illinois1call.com/images/marking_guidelines/markin14.jpg

 

OFFSETS

 

http://www.illinois1call.com/images/marking_guidelines/markin15.jpg

Used when marks cannot be placed directly above the buried line.

http://www.illinois1call.com/images/marking_guidelines/markin16.jpg

 

NO CONFLICT

 

NO/COMED

Recommend company name with the word NO

http://www.illinois1call.com/images/marking_guidelines/markin17.jpg

NICOR/OK

Recommend company name with the word NO

 

BURIED SPLICES, VALVES, MANHOLE LIDS

 

http://www.illinois1call.com/images/marking_guidelines/markin2.gif

Circle should represent approximate size of the buried line.

http://www.illinois1call.com/images/marking_guidelines/markin3.jpg

 

STREET LIGHTS

 

http://www.illinois1call.com/images/marking_guidelines/markin4.gif

http://www.illinois1call.com/images/marking_guidelines/markin5.jpg

 

TRAFFIC CONTROL

 

http://www.illinois1call.com/images/marking_guidelines/markin6.gif

http://www.illinois1call.com/images/marking_guidelines/markin7.jpg