CLARIFICATION OF WATERThe removal of
suspended materials to produce a clear, clean
CLEANOUTA fitting installed in waste lines to
permit removal of stoppages and cleaning lines.
destabilize, to aggregate, and to bind together
colloids and emulsions to improve settleability,
filterability, or drainability.
COLIFORMThe coliform groups of organisms are
a bacterial indicator of contamination. This
group has as one of its primary habitats, the
intestinal tract of human beings. Coliforms
also may be found in the intestinal tract of
warmblooded animals and in plants, soil, air,
and the aquatic environment.
COMSECONDNCBCommander, Second Naval
COPPER SULFATE(Blue Vitriol) Chemical used
to remove tree roots from sewer lines.
COUPLINGA plumbing fitting used to join two
lengths of pipe in a straight run.
CROSS-CONNECTIONIn plumbing, a physical
connection through which a supply of potable
water could be contaminated, polluted, or
infected. A physical connection between a
potable water supply and one of questionable
DEGREE OF TEMPERATUREMeasurement of
DIATOMACEOUS EARTHA porous mineral
powder, used as a filtering medium for the
removal of suspended materials.
DIRECT LABORAll labor that contributes directly
to construction tasks.
DISINFECTIONThe chemical destruction of
EFFLUENTDischarge water from a sewage or
water treatment plant or equipment.
ELECTRICAL PLANSAll electrical interior and
exterior wiring, electrical systems and
equipment, including receptacles and light
circuits, and power supplies to building and
ELBOWA plumbing fitting used to change the
direction of a length of pipe at 90° and 45°
EVAPORATIONA process of converting a liquid,
by heat, into a vapor or gas.
FERRIC CHLORIDEFeCl3, a dark salt that
hydrates to a yellow-orange form. Used in
sewage treatment as an astringent.
FILTRATIONThe process of removing organisms,
minerals, turbidity, color, taste, and odor in
water during the water treatment process.
FITTINGS Devices which when placed in a pipe
system make branch connections or changes in
a direction of a line.
FORMULA CHARTChart used to control the wash
cycle of the skid-mounted laundry unit.
GATE VALVEA sluice with two inclined seats
between which the valve wedges down in
closing. The passage through the valve is in an
uninterrupted line, and when the valve is
opened, the sluice is drawn up into a dome or
recess, leaving an unobstructed passage to the
full diameter of the pipe.
GENERAL REQUIREMENTSFirst division of a
set of specifications that describe general
materials, characteristics, and methods for a
GLOBE VALVEA valve with a round, ball-like
shell, that is used for regulating or controlling
the flow of gases or steam.
GPDGallons per day.
GPHGallons per hour.
GPMGallons per minute.
GROUNDWATERWater absorbed by the earths
surface and collected below the waterline.
HEADThe increase of pressure resulting from the
addition of energy to a liquid by a pump.
HEATThe energy that is measured in British thermal
HTHHigh-Test Calcium Hypochlorite.
HYDRATED LIME(Caustic Lime) A dry white
powder, a strong base (alkaline), consists of
calcium hydroxide made by treating caustic
lime with water. Used to balance water pH and