6
www.acclaimlighting.com
SURFACE PREPARATION AND DRAINAGE
Correct surface preparation is essential to ensure that the required walk- or drive-over rating
is achieved (see page 5), as well as sufficient drainage to prevent permanent flooding of
the chamber(s).
Each sleeve should be mounted into a level surface that is free draining, such as a permeable
stone/gravel mix. If the base is concrete then suitable drainage holes should be created.
DRAINAGE RATE
A minimum drainage rate of
0.022 gallons per minute (0.1 liters per minute)
should
be met or exceeded. Where drainage rates are insufficient, further measures should be
employed, such as a French drain below the immediate mounting surface of each sleeve.
Soft ground
Walk-over applications
Concrete
Full drive-over rating
Soil
Stone/
gravel
mix
Soft ground
base
Finishing
Concrete
SOFT GROUND BASE - 2000 LBS WALK-OVER RATING
