A0 and A60
‘‘A ’’class divisions are those divisions formed by bulkheads and decks which comply with the following criteria:

• they are constructed of steel or other equivalent material;
  
• they are suitably stiffened;
  
• they are insulated with approved non-combustible materials such that the average temperature of the unexposed side will not rise more than 140 degrees above the original temperature, nor will the temperature, at any one point, including any joint,rise more than 180 degrees above the original temperature;
  
• they are so constructed as to be capable of preventing the passage of smoke and flame to the end of the one-hour standard fire test and;
  
• the Administration requires a test of a prototype bulkhead or deck in accordance with the Fire Test Procedures Code to ensure that it meets the above requirements for integrity and temperature rise.

ABS
American Bureau of Shipping. This organization issues guidelines and reviews vessels' design and construction for seaworthiness.

ANNEALED GLASS
Standard float glass when broken it will break in large sharp shards.

ANODIZING
A process for finishing aluminum alloys that employs electrolytic oxidation of the aluminum surface to produce a protective oxide coating.

ANSI Z26.1
"American National Standards Institute glazing standard. This standard for Safety Glazing Materials became the accepted, uniform code for the specifications and testing of motor vehicle glazing material. The code was compiled by many organizations, including the automotive industry, glass manufacturers, and the Society of Automotive Engineers."

ASTM C1048
Specification for heat-treated glass which contains an intermediate level of temper.

B-15
"B"'class divisions are those divisions formed by bulkheads, decks, ceilings or linings which comply with the following criteria:

• they are constructed of approved non-combustible materials and all materials used in the construction and erection of ``B ''class "divisions are non-combustible,with the exception that combustible veneers may be permitted provided they meet other appropriate requirements of this chapter;
  
• they have an insulation value such that the average temperature of the unexposed side will not rise more than 140° above the original temperature,nor will the temperature at any one point, including any joint, rise more than 225° above the original temperature,within the time listed below:
  - class B-15 - 15 min
  - class B-0 - 0 min
  
• they are so constructed as to be capable of preventing the passage of flame to the end of the first half hour of the standard fire test and;
  
• the Administration required a test of a prototype division in accordance with the Fire Test Procedures Code to ensure that it meets the above requirements for integrity and temperature rise.

BALANCE SPRING
See Compensator Spring.

BALLISTIC GLASS
Ballistic or Bullet Resistant Glass is a composition of glass sheets and plastic films that are laminated together. This process is called lamination. The finished product will vary in thickness in accordance to the protection level that is required and ranges from 15 mm to 65 mm.

BI-PARTING
Consists of 2 sliding windows moving in opposite directions.

BULLET RESISTANT
See Ballisitic Glass.

BUTYL
A rubber material that seals the glass to the spacer, creating an airtight and water-tight unit. Butyl has the lowest gas permeability of all rubbers.

CAD
Computer-aided Design is software used to design products.

CARRIER GLASS
Refers to the outboard glass (monolythic) portion of a laminated or double glazed application. This is usually referenced in ISO standards for load requirements.

CAULKING
The filling of cracks with a compound around doors, windows, or where two surfaces meet and have minimum movement to prevent air or moisture from entering.

CCG
Canadian Coast Guard

CLAMP ON
A type of frame mounting whereby the frame is held in place without screws or bolts.

CLAMPING RING
A ring of metal used to hold the glass in place in the frame.

CLEAR GLASS SIZE
The measurement of the viewing area of the glass inside the frame.

CERAMIC FRIT
Particles of glass applied to the edge of a piece of glass. Frit has a low melting point that permanently bonds to the glass during the tempering process. Attention to blackout and adhesion to glass is tested.

CHANNEL GLAZING
The sealing of the joints around lites of glass or panel set in a U-shaped channel employing removable or fixed stops.

CHEMICALLY TOUGHED GLASS
A toughing process whereby the float glass is soaked in a chemical solution putting a thin layer of the surface into a high level of compression.

COMPENSATOR SPRING
A device for holding vertically sliding glass or sash in any desired position through the use of a spring to counterbalance the weight of the sash or glass.

CONTROLLED GOOD DIRECTORATE (CGD)
The Controlled Goods Directorate (CGD) helps strengthen Canada's defence trade controls through registration, prevention, deterrence and detection. This is achieved by regulating the access, possession and transfer in Canada of controlled goods and/or controlled technology. The CGD is legislated by the Defence Production Act (DPA).

CONTROLLED GOOD PROGRAM (CGP)
The objective of the Controlled Goods Program (CGP) is to safeguard controlled goods and/or controlled technology within Canada and to prevent unauthorized access of controlled goods and/or controlled technology. The CGP is legislated by the Defence Production Act (DPA) and the Controlled Goods Regulations (CGR)

CWB
The Canadian Welding Bureau (CWB), a Division of the CWB Group, is accredited by the Standards Council of Canada (SCC) as a Certification Body. The accreditation covers the welding certification programs for companies engaged in fusion welding, welding consumables and welding inspection organizations.

CWPCP
The Canadian Wood Packaging Certification Program (D-01-05). It is a regulatory certification system that allows Canadian wood packaging producers and treatment facilities to build wood packaging products that meet internationally accepted phytosanitary standards ISPM #15.

DEADLIGHT
Exterior or interior cover of a window or portlight. Usually made of steel or aluminum. It is kept closed during severe weather conditions.

DNV
Det Norske Veritas - Classification society.

DOGS
A lever handle that secures and tightens the closure.

DOOR SKIN
A face panel (usually two or more plies) of a door.

DOUBLE GLAZED
Any use of two thicknesses of glass, separated by an air space, within an opening, to improve insulation against heat transfer and/or sound transmission. In factory-made double glazing units the air between the glass sheets is thoroughly dried and the space is sealed airtight, eliminating possible condensation and providing superior insulating properties. Maximum 2 year warranty on vessel/transit application.

DRIP PAN
A pan shaped panel or trough used to collect condensation and moisture. Drainable spout is provided to draw water to the exterior.

DRY GLAZING
Method of securing glass in a frame by use of a dry, preformed resilient gasket, without the use of a compound.

DUTCH DOOR
A door with more than one swing opening generally split in the middle horizontally.

EXTRUSION
The process of forcing heated material (typically rubber or metal) through an orifice in a die.

FELT CHANNEL
A three-sided U-shaped opening in the sash or frame with water repellent felt attached to the sides to allow a pane of glass or panel to slide smoothly.

FIN SEAL
A pile type weatherseal with a durable polypropylene strip attached down the middle of rigid plastic backing. This seal is installed in sliding window applications to prevent infiltration of dust, light, and noise.

FIRE RATED GLASS
Glass which withstands extreme heat and prevents the spread of flames and gases.

FIXED WINDOW
A window that does not open.

FLANGE
A fin projecting from the window or door frame parallel to the plane of the wall for the purpose of securing the frame to the structure.

FLEX CHANNEL
A flexible glass run channel has an internal wire loom that is covered by a protective rubber coating for long life. Pile and/or felt linings protect the glass and provide maximum glass cushioning that reduces noise and allows the glass to operate smoothly.

FLOAT GLASS
Glass which has its bottom surfaces formed by floating on molten metal, the top surface being gravity formed, producing a high optical quality of glass with parallel surfaces and, without polishing and grinding, the fire-finished brilliance of the finest sheet glass.

FLOCK
A very short fiberous material sometimes used in coating paper, fabric, rubber and other objects.

FLOCKED CHANNEL
A three-sided U-shaped rubber extrusion flock coated (fuzzy) to protect the glass and provide quiet operation.

FLYSCREEN
An aluminum or fiberglass mesh of various grid sizes.

FRA
Federal Railroad Administration

FRIT
Blacked out perimeter of a piece of glass to prevent UV light from damaging the adhesive holding the glass.

GLAZING
The act of installing material, glass or other transparent material within a frame.

H120
Class H-120 division means a division formed by a bulkhead or deck that is:

• constructed of steel or an equivalent material and suitably stiffened;
  
  
• constructed to prevent the passage of smoke and flame after exposure to a hydrocarbon fire test for 120 minutes, and;
  
  
• insulated with non-combustible material so that, if either face is exposed to a hydrocarbon fire test, after 120 minutes the average temperature on the unexposed face will not increase by more than 139°C above the initial temperature, and the temperature at any point on the unexposed face, including any joint, will not increase by more than 180°C above the initial temperature; (cloisonnement de classe H-120)

HARD-COATED GLASS
See pyrolytic glass

HEATED GLASS
Electrically Heated - fine, nearly invisible, conductive wires laminated between 2 or more panes of glass. A low voltage is passed through them to create a heated surface. Voltages range from 12V dc to 450V ac.

HEAVY-DUTY
Windows with a glass thickness 15mm and over. This also includes glass laminates (i.e. 19mm/10mm=29mm overall thickness).

HEEL BEAD
Sealant applied at the base of a channel, after setting the glass or panel and after the removable stop is installed; one of its purposes is to create a secondary seal.

HELICOILS
Stainless or steel threads inserted into aluminum threaded holes to strengthen the connection on the inside for attaching a screw.

HERMETICALLY SEALED
Two or more glass panes assembled in a unit enclosing an airtight space. See Double Glazed.

HYDRO-STATIC HEAD PRESSURE
The height of a column of freshwater that exerts pressure at a given depth.

ISO Certification
An internationally recognized quality standard. The International Organization for Standardization is based in Switzerland and is a network of national standards institutes. The ISO 9001:2000 quality standard is perhaps the most well known quality standard in the world.

IRIS Certification
IRIS is a globally recognized standard unique to the railway industries for the evaluation of management systems. IRIS is an initiative led by the Association of European Railway Industries (UNIFE), supported by system integrators and equipment manufacturers.

ISPM #15
An International Phytosanitary Measure developed by the International Plant Protection Convention (IPPC) that directly addresses the need to treat wood materials used to ship products between countries. It affects all wood packaging material (pallets, crates, dunnages, etc) requiring that they be treated with heat or fumigated with methyl bromide and stamped with a seal of compliance. Products exempt from the ISPM 15 are made from alternative material, like paper, plastic or manufactured wood products (eg. plywood). See CWPCP.

LAMINATED GLASS
2 or more layers of annealed or tempered glass bonded to an intermediate layer of PVB plastic film. If it breaks, pieces of glass are adhered to the PVB film, therefore reducing the likelyhood of injury. This type of safety glass is also used as a sound barrier.

LLOYDS REGISTER
A catalogue of ships describing each ship - dimensions, age, place of construction, registry, ownership, etc.

LOAD-LINE
Distance from the water to the opening of the vessel .

LOW-E COATED GLASS
Low emissivity - see Pyrolytic Glass.

MARINE GRADE PRIMER
A thin coating of paint is applied to steel products to provide temporary corrosion protection during transport, storage and production.

MIG WELD
Metal Inert Gas welding. The 'metal' refers to the wire which is what is used to start the arc. It is shielded by inert gass and the feeding wire also acts as a filler rod. A semi-automatic process.

MITERED CORNERS
The joining of two members at angle that bisects the angle of junction. In mouldings this is most often a 45 degree angle.

MONOLITHIC GLASS
A single piece of glass. See Carrier Glass.

MONOLITHIC LOAD

MULLION
An intermediate connecting member used to ""marry"" two or more windows or doors together in a single rough opening. A mullion may give added strength to the connection for stability and prevent air and moisture from penetrating in some applications.

NAVAL BRASS
A copper alloy containing nominally 85% copper, 2% lead and 13% zinc.

O/A GLASS
Refers to overall thickness of multiple glass makeup.

OXIDE HEATING FILM
Similar to low E coating this film is applied to glass to act as a heating source for electrically hearted glass.

POLYCARBONATE
Rigid plastic that is easy to handle and can be cut to size. It is less susceptible to breakage than glass products. Scratches very easily but can be supplied with mar resistant coating.

PORTHOLE
See Portlight below.

PORTLIGHT
A window in the side of a vessel, usually round or with rounded corners. Portlights can be hinged to open or fixed shut. They may also come with a Deadlight.

POWDER COAT
Polyester or polyurethane baked on painted finish available in many standard and custom colors.

PROFILE
The cross-section of an extruded part, usually rubber or metal.

PVB
Polyvinyl butyral - a plastic layer used between glass pieces in the laminating process.

PYROLYTIC GLASS
A coating or ""hardcoat"" that is typically applied to the glass in a vacuum chamber or applied while it is still in the semi-molten state.

RADIUS CORNERS
An arc or bend in the corner of a fabricated window or door.

RETAINING RING
A metal extruded profile (aluminum) that is the same size as the closure. The ring clamps the window or door into the bulkhead or opening.

RING MOUNTED
A window that is attached with a clamping ring.

SAFETY GLASS
Glass that is treated to prevent injury in the event it is broken. Tempered glass, when broken, will break into tiny pieces and laminated glass will crack without breaking apart into dangerous shards. Laminated usually stays in the opening.

SIDE SCUTTLE
See Portlight.

SINUSOIDAL FORM
The wave in the wire type of heated glass.

SOLAS
International Convention for the Safety of Life at Sea (IMO).

SOLEX
A lightly tinted green glass used to diffuse UV light. (manufactured by PPG).

SPIGOT
A perimeter flange 90 degrees to the window plane. It is a male fitting that fits into the bulkhead cutout.

SPRING BALANCE
See Compensator Spring -- A window mechanism that holds up glass or glass units. It also helps control the force needed to raise and lower the window.

TEMPERED GLASS
Glass is heat treated and then cooled in a controlled enviornment to improve tensile strength. Tempered glass shatters into many small pieces when under stress.

TERMINAL BLOCK
Plastic block containing brass/steel connectors to join the heated glass grid to the external power supply.

THERMAL BREAK
A low conductive material used between a window or door to reduce the passage of heat and cold.

TIG WELD
Tungsten Inert Gas welding. A slower process than MIG welding but more precise. It can be used at lower amperages for thinner metal and can be used on exotic metals. This type of welding takes longer to learn than MIG welding.

TRIM RING
A perimeter metal ring which covers and attaches to joiner wall. Sometimes called a window box.

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WAIST RAIL
Window material at the base of the window spanning the width of the window. When the window is installed this is usually at the waist height and holds clamping mechanisms for vertical sliding windows.

WALK THRU
The area of the doorway in which a person passes through.

WATERTIGHT
No water penetration under a 10 foot head pressure.

WEATHERTIGHT
The resistance to the weather and outdoor elements. Weathertightness is not necessarily waterproofing, but rather ensuring against undue dampness and damage to the interior.

WELD IN
The closure is mounted by welding the frame to the bulkhead or hull.

WINDOW BOX
See Trim Ring.