MIL-HDBK-1005/7A
7.7.1.2
Buried Sprinklers . Sprinkler heads buried in the
ground and flush type heads are prohibited, except where a
separate nonpotable water system is being used.
7.7.1.3
Sprinklers With Risers .
Fixed or automatic "pop up"
risers are permitted.
7.8
Meter Vaults and Boxes
7.8.1
Meter Vaults . Vaults should be easily accessible but
away from normal traffic.
7.8.1.1
Construction.
Where necessary, watertight structures
should be used.
a)
Small Vaults. Use concrete blocks, brick, or
reinforced concrete structures.
b)
Large Vaults.
Use reinforced concrete
structures.
7.8.1.2
Access. Vaults should be locked where necessary to
protect against unauthorized intrusion.
7.8.2
Boxes.
Wherever possible, place meter boxes away from
normal traffic.
7.8.2.1
Construction Boxes. Construction boxes may be made of
sections of clay or concrete pipe, or precast concrete or cast
iron.
7.8.2.2
Covers. Box covers should be cast iron or aluminum
with a locking device.
7.8.2.3
Combinations . In nonfreezing climates, it is
permissible to use aboveground cast iron combination meter boxes
and meter yokes.
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