Chapter 12 Vocab and Questions1. Light gauge steel stud – a length of thin sheet metal formed into a stiff shape and used as a wall framing member2. Cold-formed steel – steel formed at a temperature at which it is no longer plastic, as by rolling orforging at room temperature3. Stud or joist section, C section – one of an array of small, closely spaced, parallel wall framing members; a heavy steel pin.4. Channel section – a steel or aluminum section shaped like a rectangular box with one side missing5. Furring channel – a sheet metal furring strip (metal attached to a masonry or concrete wall to permit the attachment of finish materials using screws or nails; any linear material used to create a spatial serration between a finish material and an underlying substrate) in the form of a cee channel6. Cee Channel – a metal framing member whose cross sectional shape resembles the letter c7. Gauge – a measure of thickness of sheet material. Lower gauge numbers signify thicker sheets; also spelled gage.8. Self-drilling screw – drills its own hole with threads9. Nested member –helps hold together metal frame10. Web stiffener – a metal rib used to support the web of a light gauge steel joist or a structural steel girder against buckling.11. Gypsum sheathing panel – a water resistant, gypsum based sheet material used for exterior sheathing.12. Nonstructural metal framing – framing interior partitions13. Thermal bridging – a component of relatively high thermal conductivity that conducts heat morerapidly through an insulated building assembly, such as a steel stud in an insulated stud wall14. Prescriptive requirement – a set of legal regulations that mandate specific construction details and practices rather than establish performance standards15. Ductile – ability to be drawn out into a thin wire16. Alloy – a substance composed of two or more metals or of a metal and a nonmetallic constituent. 17. Heat Treatment - 18. Quench – the rapid cooling of metal so as to alter its physical properties; a form of heat treatment19. Temper – controlled heating and cooling of a material to alter its mechanical properties; a form of heat treatment20. Anneal – cooled under controlled conditions to minimize internal stresses, usually referring to iron or steel members21. Cold Working – shape metal while its cold22. Galvanize – application of coating steel in a zinc coating23. Electroplating – a method of galvanizing, in which an electric current is used to deposit zinc froma liquid bath onto steel.24. Anodize – an electrolytic process that forms a permanent protective oxide coating on aluminum,with or without added color25. Casting – pouring a liquid material or slurry into a mold whose form it will take as it solidifies26. Rolling – passed through pairs of rollers to reduce thickness27. Extrusion – the process of squeezing a material through a shaped orifice to produce a linear element with the desired cross section; an element produced by this process28. Forging – make or shape a metal object by heating in a fire or furnace then beating and hammering it29. Stamping - 30. Drawing – shaping a material by pulling it through an orifice, as in the drawing of a steel wire or the drawing of a sheet of glass31. Machining - 32. Milling – shaping or planning by using a rotating cutting tool33. Lathe – a machine in which a piece of material is rotated against a sharp cutting tool to produce a shape, all of whose cross sections are circles; a machine in which a log is rotated against a long knife to peel a continuous sheet of veneer.34. Drilling - 35. Drill press - 36. Tap – to cut internal threads, such as in a hole or nut37. Die – an industrial tool for giving identical form to repeatedly produced or continuously generated units, such as a shaped orifice for giving form to a column of clay, a steel wire, or an aluminum extrusion; a shaped punch for making cutouts of sheet metal or paper, or a mold for casting metal or plastic38. Flame cutting torch - 39. Plasma cutting - 40. Laser cutting - 41. Sheet metal brake – a machine used to form length of sheet metal into bent shapes42. Brake metal – lengths of sheet metal bent into shapes 43. Welding – the process of making a joint between two pieces of metal formed by fusing the pieces together by the application of intense heat, usually with the aid of additional metal melted from a rod or electrode44. Brazing – a process that uses molten, non-ferrous metal to join two pieces of metal. The brazing metal is melted at a temperature below that of the metals being joined, so that the joined metals remain in a solid state throughout the process.45. Soldering – low temp form of brazing46. Brittle – no ductility47. Die casting – manufactured by punching through a steel material48. Galvanic protection - 49. Hot dip galvanizing – a method of galvanizing in which a steel member or assembly is dipped into a bath of molten zinc50. Elecro galvanizing – method of galvanizing in which an electric current is used to deposit zinc from a liquid bath onto steel 51. Mechanical galvanizing – Review Question1. How are light gauge steel framing members manufactured? Sheet steel is fed from continuous coils through machines at room temperature that cold-work the metal and fold it into efficient structural shapes, producing linear members that are stiff and strong.2. How do the details for a house framed with light gauge steel members differ from those for a similar house with wood platform framing? Insulation mainly3. What special precautions should you take when detailing a steel framed building to avoid excessive conduction of heat through the framing members? 4. If a building framed with light gauge steel members must be totally non-combustible, what materials would you used for subflooring and wall sheathing?5. What is the advantage of a prescriptive building code for light gauge steel framing?6. Compare the advantages and disadvantages of wood light frame construction and light gauge steel frame