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VACUUM an air pressure less than atmospheric. Also,
implies siphonage in piping system.
AUTOMATIC STANDPIPE Classification of Standpipes: operates
SYSTEM automatically by opening a hose valve.
UNIT VENT an arrangement of venting so installed that one
vent pipe will serve two (2) trap
MANUALLY-OPERATED Classification of Standpipe: remote control
STANDPIPE SYSTEM device at each hose station;
UNCONFINED SPACE a room space having a volume equal to at
least 1.4 cubic meters of the aggregate input
rating of the fuel-burning appliance installed
in that space. Rooms adjacent and open to
the space where the appliance is installed,
, through openings not
furnished with doors, are considered a part of
the________________________________.
TUBE a cylindrical conduit or conductor conforming
to the particular dimensions known as tube
sizes and denoted by its outside diameter
or O.D.
DRY STANDPIPE Classification of Standpipe: having no
permanent water inside the pipe.
STORM WATER that portion of the rainfall or other
precipitation which runs off over the earth
surface after a storm .
TRAP SEAL the maximum vertical depth of liquid that a
trap will retain measured between the crown
weir and the top of the dip of the trap.
TRAP ARM that portion of a fixture drain between a trap
and the vent.
STOREY that portion of a building included between
the upper surface of any floor and the upper
surface of the floor next above .
TRAP a fitting or device designed and constructed to
provide, when properly vented, a liquid seal
which prevents the backflow of foul air or
methane gas without
materially affecting the flow of sewage or
wastewater through it.
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