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A B C D E F G H I K L M N O P Q R S T U V W
Q
- QUENCHING - The process of cooling heated metal by contact with a liquid, gas or solid, for purposes of hardening or tempering.
R
- RAIL- Horizontal, vertical or inclined member of railing system. See "Railing System", "Handrail",
"Wall Handrail", "Stair Rail System".
- RAILING- See "Railing System".
- RAILING SYSTEM- A framework of horizontal, vertical or inclined members or panels, or some combination of these, supporting a handrail and located at the edge of a stair flight, platform or floor, as a safety barrier. See "Guard Rail System" and "Stair Rail System".
- RAKE - See "Pitch"
- RAKE DIMENSION - See "Pitch Dimension".
- RAMP RAIL SYSTEM - A railing system located along side(s) of a ramp.
- RESIDUAL DEFLECTION - See "Permanent Set".
- RISE - See "Flight Rise".
- RISER - The vertical or inclined face of a step, extending from the back edge of one tread to the outer edge of the tread or lower edge of the nosing next above it.
- RISER, OPEN - A term used to describe a stair having open spaces rather than risers between treads.
- RISER HEIGHT - The vertical distance between the top surfaces of two successive treads.
- RUN - See "Flight Run" and "Tread Run".
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S
- SADDLE - See "Threshold".
- SAFETY NOSING - A stair nosing having an abrasive nonslip surface flush with the tread.
- SAFETY TREAD - A stair tread which is covered on its top surface with an abrasive or nonslip material.
- SAND BLASTING - Subjecting to a stream of sand projected at high velocity under air or steam pressure, for the purpose of removing scale or encrusted material or to provide a textured finish.
- SANITARY COVE (Stairs) - A small projection formed in the face of a metal rise along its full length to provide an angled or curved transition between the treat surface and the riser face, to facilitate cleaning.
- SCREEN - Perforated panel or wire mesh serving as a panel.
- SCROLL - Ornamental spiral or convoluted form serving as a decorative railing panel or insert. Either cast or forged.
- SHEET - Thin, flat, rolled metal product having mill or cut edges, less than .229" in thickness.
- SHOP DRAWING - A working drawing usually prepared by the fabricator.
- SIDE MOUNT - Railing support anchoring post to vertical surface, such as fascia or stringer face.
- SLAG - The crusty residue resulting from melting or welding metal.
- SLEEVE - a) A tubular section of sheet metal or other material placed in concrete or masonry to provide either a pocket or opening for the insertion or the penetration of another item. b) An internal tubular splice between abutting sections of pipe, tubing or tube-like members.
- SLIP JOINT - A joint which permits relative sliding movements of the joining parts.
- SLOPE - See "Pitch"
- SQUARE CUT - Cuts made square to the tangent of a bend after the bending operation.
- SOFFIT (Stairs) - Underside of stair in exposed construction. Also, finish material applied to underside of stair.
- SPECIFICATIONS- Document providing descriptive or performance requirements and criteria.
- SPINDLE- A tapered round picket, with center part larger in diameter than the ends.
- SPIRAL STAIR - A stair with a closed circular form, uniform sector-shaped treads and a supporting center column.
- SPLICE PLATE - A plate used for fastening two or more members together.
- SPRAYING - The process of coating metal with pain, another metal or any other material by use of air or hydraulic pressure.
- SQUARES- A term used in reference to square metal bars having either slightly rounded or sharp corners.
- STAIR - A flight or series of connecting flights extending between two or more floors.
- STAIR LIFT - See "Flight".
- STAIR-RAIL SYSTEM - Railing system located along open sides of stair and landing.
- STAIR RUN - One run of stairs between floors, platforms, or floors and platforms.
- STAIRWAY - See "Stair".
- STAIR WELL - The vertical shaft space in a building occupied by a stair; also, the open well space between a series of flights.
- STEP - The combination of a riser and the tread immediately above it.
- STIFFENER - A reinforcing member which serves to prevent or limit the deformation of the member to which it is attached.
- STRAIGHT RUN STAIR - Stair extending in straight line between two floors and consisting of single flight or series of flights with one or more intermediate platforms.
- STRING - See "Stringer"
- STRINGER (Stair) - An inclined structural member supporting a flight of stairs, or a structural member having an inclined section with a horizontal section at one or both ends, supporting a flight and one or two platforms.
- STRINGER, BOXED - A stringer having a hollow square or rectangular cross section.
- STRINGER, CENTER - A stringer located under a flight at its mid-width and supporting the treads, or treads and risers.
- STRINGER, CLOSED - See "Stringer, Boxed".
- STRINGER, FACE - A stringer which supports, on one side, the ends of treads and risers, and is exposed on the other side.
- STRINGER, OPEN - A structural channel used as a stringer.
- STRINGER, PLATE - A flat plate used as a stringer.
- STRINGER, TUBE - A stringer made from a metal tube section.
- STRINGER, WALL - A stringer placed alongside a wall, and usually carrying no railing.
- STRIP - Flat metal, .229" or less in thickness and 12" or less in width.
- STRUT - A vertical compression member designed to resist axial loads.
- SUB-TREAD - See "Tread, Pan Type".
- SWEDISH IRON LOOK - See "Hammering".
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T
- TACK WELD - a) A small temporary weld applied to metal parts to hold them in correct position while completing an assembly. b) One of a series of small welds applied where a continuous weld is unnecessary.
- TANGENT - The straight portion of material on either side of the arc of a bend.
- TANGENT POINT - The point at which the bend starts or ends.
- TEMPERING - Heating metal, glass or other material to temperature below transformation stage, subsequently cooling it at a controlled rate to change its hardness, strength, toughness or other property.
- TEMPLATE - a) A pattern used as a guide in fabricating a part. b) A precise detailed layout or patter for providing the necessary fabrication details.
- TENSILE STRENGTH - The maximum load which can be sustained by metal in tension measured in pounds per square inch.
- THRESHOLD - A raised member extending between the jambs of a door frame at the floor.
- TOE BOARD - See "Kick Plate".
- TOE PLATE - See "Kick Plate."
- TOLERANCE - Permissible deviation from a nominal or specified dimension or value.
- TOP RAIL - The top member of a rail system, sometimes called cap rail
- TRAFFIC RAIL SYSTEM - A railing system designed for the control of movement of people, requiring special consideration for given end-use conditions.
- TRANSFER RAIL SYSTEM - Railing system designed for transfer of body weight in such locations as toilets, showers and tub enclosures.
- TREAD - The horizontal member of a step.
- TREAD DEPTH - The tread run plush the projection of the nosing, if any.
- TREAD, GRATING TYPE - Tread fabricated from metal grating.
- TREAD LENGTH - The dimension of a tread measured perpendicular to the normal line of travel on a stair.
- TREAD PAN - A section formed from sheet metal to receive a fill and provide, when filled, either a tread or combination tread and riser.
- TREAD, PLATE TYPE - A tread, or combination of tread and riser, fabricated from metal plate, floor plate, tread plate or a combination of plates.
- TREAD RUN - The horizontal distance between two consecutive risers or, on an open riser stair, the horizontal distance between nosings or the outer edges of successive treads, all measured perpendicular to the front edges of the nosings or treads.
- TUBING- A hollow section of metal having a round, square, rectangular or other cross-sectional form. Size is designated by outside dimension(s) in inches or millimeters, and wall thickness in gauge number, thousandths of an inch or millimeters, or fraction of an inch.
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U
- UPSETTING - A cold-forging or hot-forging operation by which the cross-sectional area of a bar is increased locally.
- URNS- See "Finials"
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V
- VENT HOLE -Opening for escape of gas or liquid for relief of pressure, especially required in fabricating when item is to be coated by immersion or hot-dip galvanized. Also referred to as "drainage hole".
- VOLUTE(Stairs) - A spiral or scroll-shaped fitting used to terminate a stair handrail.
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W
- WALL CLIP or WALL FLANGE - A bracket used for anchoring.
- WALL HANDRAIL - Handrail attached to wall adjacent to stair and paralleling pitch of flight, also used along walkways, ramps and corridors. Also referred to as wall rail.
- WALL RAIL - See "Wall Handrail"
- WALL RETURN - A bend at the end of a wall handrail, turning it toward the wall to which it is attached.
- WEATHERING STEEL - High-strength, low-alloy steel made especially for application requiring light weight, high strength and resistance to corrosion or approximately five to six times that of low-carbon steel.
- WEEPHOLE - A small opening provided to permit the drainage of fluid.
- WELDING - The process of joining two metals or alloys by fusion.
- WELDING ROD - Metal rod of suitable composition to be used as a source of filler material in arc or gas welding.
- WINDER - A tread having less width at one end that at the other
- WIRE MESH - See "Screen".
- WORKING DRAWING - See "Shop Drawing"
- WRINKLES - Folds, creases, or waving formed on the inner radius of a bend during the bending process.
- WROUGHT IRON - Fabricated ornamental work, usually made of mild steel of commercial quality. Also see "Genuine Wrought Iron".
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