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I -
I-BEAM: A steel beam with
a cross section resembling the letter I. It is used for long spans
as basement beams or over wide wall openings, such as a double garage
door, when wall and roof loads are imposed on the opening.
IMPROVEMENTS: Any additions to property which tends to increase
its value, such as buildings, streets, sewers, etc.
INCANDESCENT LAMP: A lamp in which a filament gives off light when
sufficiently heated by an electric current.
INSULATiNG BOARD: Any board suitable for insulating purposes: usually
manufactured board made from vegetable fibers, such as fiberboard.
INSULATION: Materials for obstructing the passage of sound, heat,
or cold from one surface to another.
INTERIOR TRIM: General term for all the finish molding, casing,
baseboard, and cornice applied within the building by finish carpenters.
- J -
JACK RAFTER: A rafter that spans the
distance from the wall plate to a hip, or from a valley to a ridge.
JALOUSIE: A type of window consisting of a number of long, thin,
hinged panels.
JAMB: The side and head lining of a doorway, window, or other opening.
JOIST: A horizontal structural member which supports the floor or
ceiling system.
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KILN-DRIED LUMBER: Lumber that has been
kiln-dried, general ly to a moisture content of 6 to 1 2 percent.
KING POST: The central upright piece in a roof truss.
KNEE WALL: A low wall resulting
from one-and-one-half-story construction.
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