Use these flash cards to learn the color coding for locating underground utilities.
There are 6 flash cards in this set (1 page to print.)
Download this set in PDF format for free:
1. Print out the cards.
2. Cut along the dashed lines.
3. Fold along the solid lines.
Preview of Underground Utility Color Codes flash cards:
Sample flash cards in this set:
|Red||electric power lines, cables, conduit, and lighting cables|
|Orange||telecommunication, alarm or signal lines, cables, or conduit|
|Yellow||natural gas, oil, steam, petroleum, or other gaseous or flammable material|
|Green||sewers and drain lines|
|White||proposed excavation limits or route|
This set of flash cards belongs to these categories: misc