Project Design Procedures
Highway illumination project designers generally follow the steps shown in the table below.
Step | Action |
---|---|
1 | Determine whether the lighting will be safety lighting or continuous lighting; then check to see to what extent lighting is warranted. (See Chapter 2.) |
2 | If the project is inside a city’s limits, contact the city to see if they are willing to help finance continuous lighting for the project. (See Chapter 4.) Obtain the proper lighting agreement. |
3 | Determine what type of lighting to use (pole height, median or house side mounting or high mast). (See guidelines and standards throughout this chapter.) |
4 | Place lighting poles for the entire project. (See “Spacing of Light Poles” and “Pole Placement Guidelines” in this chapter.) |
5 | Contact utility company to determine the type of service available and possible electrical service locations. (See Chapter 7 “Electrical Service.”) |
6 | Lay out circuits, keeping road crossings to a minimum, as jacking or boring escalates costs. (See Chapter 7, “Circuit Design.”) |
7 | Determine and label poles, length and size of wire, conduit, and duct cable. NOTE: Show pole station number and offset from base line or edge line if applicable. For poles with similar offsets, offset can be shown by plan note. Electrical service numbers and light pole numbers are recommended. |
8 | Prepare sheet summaries and project summaries. (The project summary shows the items and quantities needed for the entire project. It is compiled from the sheet summaries and usually includes the electrical service data.) |
9 | If the project is inside a city limit, submit plans and title sheet with the proper quotation for city approval and signature. (For example, see Chapter 4, “Quotation on Plan Title Sheet.”) |