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Gable roof
A roof style made up of two equal and
opposite slopes that meet to form a
ridge.
Gable vent
A vent located at the gable ends of the
roof.
Galvanic corrosion
See
Electrolytic corrosion.
Galvanized steel
Steel coated with zinc.
Galvanized steel
Steel sheeting covered with zinc, used as
a roof covering.
Gambrel roof
A roof style with a double slope on each
side where the bottommost slope is
the steepest.
Gas chiller
A cooling system that uses ammonia as a
refrigerant and uses heat to drive the
refrigerant cycle.
Gas manifold
In a gas burner, the gas line that
delivers gas to the burners.
GFCI
An abbreviation for a ground fault
circuit interrupter, a monitoring device that will trip
after a ground fault is detected, stopping the flow of electricity in a
circuit.
GFCI outlet
An outlet which has a monitoring device
that will trip the circuit when a ground
fault is detected.
GFCItester
A testing device used to test the
operation of GFCI outlets and 3-slot outlets for
polarity and grounding.
Girders
Horizontal load-bearing members of a
floor system that carry the weight of the floor
and wall loads to the foundation and columns. Also called beams.
Glazing
The window pane made of glass or other
material.
Gpm
An abbreviation for gallons per minute, a
measurement of water flow.
Grade beams
Poured reinforced concrete beams that
rest on grade, just in the ground, or
on piers.
Grade
The slope of the land at the building
site.
Grading
The slope of the land around the house.
Gravity hot water heating system
A system in which water
heated in a boiler rises
naturally through pipes to radiators in the house.
Gravity steam heating system
A system in which water
boiled in a boiler changes
tosteam which rises naturally through pipes to radiators and condensate
drains back to the
boiler.
Gravity warm air heating system
A system in which air
heated in the furnace rises
naturally through ductwork without the aid of a blower unit. Also called
an octopus furnace.
Gray water
Drainage from the clothes washer, laundry
tub, or floor drain.
Grounded outlet
An outlet wired with a ground wire that
is connected to the grounding
system.
Grounding conductor
The wire used to ground the
home's electrical system.
Grounding system
The means by which a home's electrical
system is grounded, typically
by connecting a ground wire to plumbing pipes or to a metal rod buried in
the earth.
Grounding
The process of electrically connecting
electrically conductive items to the earth
by which means excess electrical current is absorbed into the ground.
Ground-level gutter
A concrete trough in the ground
that catches rainwater runoff from
the roof and carries it away from the house.
Gusset plate
A piece of wood placed over partial
bearing joists and nailed into the joists to
hold them in place. In a truss, metal or wood connectors that hold
members of the truss
together.
Gutter
A metal, plastic, or wood trough attached
to the roof at the eaves to collect
rainwater and carry it away from the roof.
Gypsum
A common mineral also called sulfate of
calcium, used in plaster. |