| AAMA/WDMA/CSA 101/I.S.2/A440-05 contains
a detailed, multi-page glossary of terms pertinent
to the document. Selected definitions include:
Certification�a
process that indicates a representative sample
of a product line has been tested, that the product
meets specified requirements, and that the product
is subject to ongoing inspections by an outside
certification agency.
Design pressure (DP)�the
wind load pressure a product is rated to withstand.
Design wind load�the
wind load pressure a product is required by the
specifier to withstand in its end use application.
Fenestration�openings
in the building envelope, such as windows, doors,
and unit skylights, designed to permit the passage
of air, light or people.
Gateway performance requirements�the
requirements for minimum gateway test size, air
leakage resistance, structural design load, and
overload testing, water penetration testing, forced-entry
resistance, and auxiliary testing which are the
conditions permitting a product entry into a performance
class. They are specifically indicated for each
product operator type.
Gateway test size�the
test specimen size specified to enter a performance
class.
Leaf�a part
of a side-hinged door system, glazed or unglazed,
surrounded by a frame. Leaves can be fixed in
place (inoperable) or movable (operable).
Limited water (LW) (as
a designation)�indicates that the
water penetration resistance performance is achieved
by testing at a pressure less than the minimum
test pressure required for the indicated performance
class and performance grade (design pressure).
Minimum gateway test size�the
test specimen size specified to enter a performance
class at the lowest or minimum level.
Negative pressure�pressure
acting in the outward direction.
Operating force�the
force required to maintain a sash, leaf or panel
in motion in either the opening or closing direction.
Performance class�one
of the five performance classes (R, LC, C, HC,
and AW). This classification system provides for
several levels of performance so the purchaser
or specifier is permitted to select the appropriate
level of performance depending on the climatic
conditions, height of installation, type of building,
etc.
Performance grade�the
minimum level of design pressure (air, water,
wind) to which a representative test specimen
is tested to achieve a particular rating.
Positive pressure�pressure
acting in the inward direction.
Pressure�differential
force per unit area between the interior and exterior
surfaces of the test specimen.
Side-hinged door system�a
door having, at a minimum, a hinge attachment
of any type between a leaf and jamb or edge of
another leaf but having a single, fixed vertical
axis about which the leaf rotates between open
and closed positions. These systems include, as
a minimum, a single operating leaf, surrounding
frame, and components. The surrounding frame has
vertical and horizontal members that are joined
at the intersections and fully encompass the operating
and/or fixed leaf/leaves. Additional operating
and/or fixed leaves, side lites, transoms, framing
and mullions are often included.
Specification�a
written document often accompanying architectural
drawings, giving such details as scope of work,
materials to be used, installation method, required
performance, and quality of workmanship for work
under contract.
Structural test pressure
(STP)�the pressure differential applied
to a window, door system or unit skylight. In
this standard/specification, the STP is 150 percent
of design pressure for windows and doors and 200
percent of design pressure for unit skylights.
Test specimen�a
complete, fully functioning window, door or unit
skylight supplied by the applicant, and fitted
in the test apparatus in accordance with the manufacturer�s
installation instructions (including manufacturer�s
instructions for clearance and shimming).
Water penetration�penetration
of water beyond the vertical plane intersecting
the innermost projection of the test specimen,
not including interior trim and hardware, under
the specified conditions of air pressure difference
across the specimen.
Wind load resistance�the
ability of a window, door or unit skylight to
resist the structural effects of differential
pressure induced by wind, usually determined relative
to a design pressure derived from the building
codes.
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