b'Acurlite Structural Skylights, Inc.24 Installation Manual 25Condensation The deposition of moisture (liquid or frost) on the surface of an object caused by warm, moist air coming intoGlaze To install glass lights or infill material.contact with a colder object.Glazing (N)An infill material such as glass or insulted panel. (V)The process of installing an infill material in a pre-Condensation Gutter A trough for carrying off condensed water, this may be drained to the exterior or allowed to evaporate. pared opening.A rating number obtained under standard test conditions as prescribed in AAMA Resistance1503.TheGlass that has been heat treated to a high surface and/or edge compression range to meet the requirements CRF is essentially the ratio of the difference between an average Factor (CRF) inside surface temperatureHeat Strengthenedof ASTM C1048 (kind HS).Heat-strengthened glass is approximately two times as strong as annealed glass of and the outside air temperature, and the difference between the inside air temperature and the outside airGlass the same thickness when exposed to uniform static pressure loads.Heat-strengthened glass is not considered Condensation Resis- temperature.The CRF allows for comparison of the relative performance of fenestration systems based on thesafety glass and will not completely fracture into many small pieces (dice) as with fully tempered glass.tance Factor(CRF) point at which an objectionable amount of condensation occurs.The CRF is dimensionless and expressed as aFor the purpose of this practice the installer, of fenestration products is a person or persons who do the number between 1 and 100.The higher the CRF, the higher the resistance to condensation. Installer installation labor and those who supervise such labor.Insulated Glass UnitTwo or more lites of glass spaced apart and hermetically sealed to form a single-glazed unit with an air -or An area or room within a building that: (IGU) gas - filled space between.(a)is heated or cooled by any equipment or appliance:Conditioned Space (b)contains un-insulated ducts; or Interlayer A layer of material acting as an adhesive between layers of glazing.(c)has a fixed opening directly into an adjacent area or room that is heated or cooled by any equipment or appliance or contains un-insulated ducts. A product that is shipped in a disassembled condition and later assembled according to the instructions of the Knocked Down (KD) manufacturer utilizing all of the components supplied or specified by the manufacturer.Construction Architectural drawings, specifications, shop drawings, manufacturing details, test reports or contracts, build-Documents ing permits. Laminated Glass Two or more lites of glass permanently bonded together with one or more polymer interlayers.Cross Rafter In a skylight system, a structural framing member between rafters; generally at or near horizontal. Having a horizontally flat, even surface with no irregularities and no vertical tilt.No part of the surface is Level higher or lower than any other part.Curb A wall or frame used to raise roof windows, skylights, or sloped glazing above the surface of the roof.Daylight OpeningLive Loads Loads form people and non-permanent parts of a building; loads from window washing and glazing rigs are (DLO) Maximum unobstructed opening when viewed from a direction perpendicular to the plane of the opening. live loads.Dead Load As it pertains to skylights the dead load is the weight of all of the skylight components, including glass. Low Emissivity(LowGlass with a transparent metallic or metallic oxide coating applied onto or into a glass surface, which reflects Typically expressed in pounds per square foot (PSF). E) Glass long-wave infrared energy and thus improves the U-value.Deflection Displacement due to flexure of a member under an applied load. Manufacturer A company which fabricates and/or assembles one or more parts, components, and/or accessories or supplies Design Wind Load The wind load pressure a product is required, by the specifier, to withstand in its end use application. entire fenestration systems.Negative Pressure Pressure acting in the outward direction.Any Glazing System/Glazing In-fill that has the fully reversible ability to change its performance properties, Dynamic Glazing including U-factor, SHGC, or VT.This includes, but is not limited to, shading systems between the glazingNeoprene A synthetic rubber having physical properties closely resembling those of natural rubber.It is made by layers and chromogenic glazing. polymerizing chloroprenes, and the latter is produced from acetylene and hydrogen chloride.NFRC National Fenestration Rating Council.A non-profit organization that establishes objective window, door, and Electrochromic Glazing with optical properties that can be varied continuously from clear to dark with a low-voltage signal. skylight energy performance ratings to helpcompare products and make informed purchase decisions.Ions are reversibly injected or removed from anelectrochromic material. Overall Dimensions (O/A) The external dimensions of a product, expressed in millimeters or inches.Electrolysis Chemical decomposition of metal surface by the action of dissimilar metals and moisture.Any means provided to stop the flow of water out of the ends of a sill, panning system or subsill and into thePan Flashing(SillA type of flashing used at the base of a glazing system to divert water to the exterior.Pan flashings have an up-End Dam wall cavity, such as sealant, upstands, plates or gasketing.End dams shall be of a height equal to the height ofPans)turned rear interior edge, some are contiguous while other may require end dams.Pan flashings are intended the back dam or higher. to collect and drain water toward the exterior, including water that may enter through the glazing system.EPDM A synthetic rubber; Ethylene Propylene Diene Monomer. Photovoltaic A device that produces electricity directly from sunlight (photons).Extruded Formed by forcing plastic material or metal through a shaped opening. Plumb To make vertical.Openings in or on the building envelope, such as windows, doors, secondary storm products (SSPs), curtainPositive Pressure Pressure acting in the inward direction.Fenestration walls, storefronts, roof windows, tubular daylighting devices (TDDs), sloped glazing and skylights, designed to permit the passage of air, light or people.Primer A product specifically designed to enhance the adhesion of sealant systems to certain surfaces.Flush Glazing A method of setting glass whereby glazing beads are installed to be flush with the plane of the glazing.Purlin See Cross RafterGlass that has been heat treated to a high surface and/or edge compression to glass meet the requirements Fully Tempered Glass of ASTM C1048 (kind FT) or CAN/CGSB 12.1.Fully tempered glass, if broken, will fracture into many smallR-Value A measure of the resistance of an insulating or building material to heat flow.The higher the number, the pieces (dice) which are more or less cubical.Fully tempered glass is approximately four times stronger thangreater the resistance to heat flow.R-Value is the reciprocal of U-Value.annealed glass of the same thickness when exposed to uniform static pressure loads.www.acurlite.com570.759.6882'