
L-861SE Clamp Band ERTE
96A0193 Rev. i
Installation
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Figure 2:
L-861SE Light Fixture Assembly
2.4 Installation
This subsection provides installation instructions for the L-861SE light fixture.
2.4.1 Placement
The L-861SE light fixtures are located 2 to 10 feet (0.6 to 3 m) from the edge of the full
strength pavement runway and in a straight line on each side of the runway. The fixtures are
spaced longitudinally not more than 200 feet (61 m) apart on a line such that the light units on
opposite sides of the runway are perpendicular to the runway centerline.
2.4.2 Base Mounting
See Figure 4. The L-861SE light fixtures can be mounted on an L-867 base (2) mated with a
base plate (1) with a diameter and bolt-hole circle corresponding to either a 12-inch or 16-inch
L-867 base. The base plate has a female thread to receive a frangible coupling. A gasket is
used with the base plate to form a watertight seal between the base plate and the L-867 base.
To install the L-867 base, perform the following procedure:
1. Install the L-867 base on undisturbed soil. If the soil is unsuitable, remove soil to an
adequate depth and replace with compacted acceptable material.
NOTE:
In closed duct systems, install in soil conditions with good drainage. Use light
bases having a drain hole to prevent water accumulation.
2. Orient the cable entrance hubs of the base in the proper directions.
3. Level the light base so that the mounting flange surface is level with the finished grade.
4. With the base at the proper orientation and held at proper elevation, place approximately 4
inches (10.16 cm) of concrete backfill (7) around the outside base.
NOTE:
If the concrete backfill is omitted, the earth backfill must be compacted to maintain
proper elevation and orientation of the base.
5. Slope the top of the concrete away from the flange portion of the base so the sloped outer
edges of the concrete are at surface grade.
1. Outer Lens Globe
3. Lens Divider
4. Inner Lens Segment
5. Lamp
6. Lens Clamp Band
7. Phillips Head Screw
8. Column
9. Frangible Coupling
10. Hex Head Screw
11. Lower Casting of
2. Inner Lens Spring Clip
14. Socket
13. Socket Plate
12. Gasket
10. Hex Head Screw
Head Assembly
15. Inner Lens Clip