Before meeting our structural engineers lets get to know the lingo of steel
Bottom Plate: A plate that contains the bottom end of a wall stud. The top plate has a web and flanges, but no lips.
Ceiling Joist: A horizontal structural framing member that supports a ceiling and/or attic loads.
C-section: Used for structural framing members such as studs, joists, beams, girders, and rafters. The name comes from the member’s “C’ shaped cross-sectional configuration consisting of a web, flange and lip. C-section web depth and flange width measurements use outside dimensions
Clip Angle: An L-shaped short piece of metal (normally with a 90 degree bend) typically used for connections.
Cold-forming: A process where light-gauge steel members are manufactured without the use of heat. Flange: The part of a C-section or track that is perpendicular to the web.
Flat Strap: Sheet steel cut to a specified width without any bends, typically used for bracing and other flat applications.
Floor Joist: A horizontal structural framing member that supports floor loads.
Galvanized Steel: Steel that has a zinc protective coating for resistance against corrosion. The level of coated protection is measured by the weight of the galvanized coating applied to the surface area of the steel.
Gauge: A unit of measurement traditionally used to describe the nominal thickness of steel. The lower the gauge, the greater the thickness.
Header: A horizontal built-up structural framing member used over wall or roof openings to carry loads across the opening.
In-Line Framing: Frame systems where all vertical and horizontal load carrying members are aligned.
Jack Stud: A vertical structural member that does not span the full height of the wall and supports vertical loads and/or transfers lateral loads. Jack studs are used to support headers.
King Stud: A vertical structural member that spans the full height of the wall and supports vertical loads and lateral loads. Usually located at both ends of a header adjacent to the jack studs to resist lateral loads.
Lip: The part of a C-section that extends from the flange at the open end. The lip increases the strength characteristics of the member and acts as a stiffener to the flange.
Load Bearing Wall: A wall that carries vertical loads from above or lateral loads resulting from wind. These loads may act separately or in combination. Both internal and external walls may be load bearing.
Material Thickness: The base metal thickness excluding any protective coatings. Thickness is expressed in mils (traditionally expressed in gauge).
Mil: A unit of measurement typically used in measuring the thickness of thin elements. One mil equals 1/1000 of an inch.
Multiple Span: The span made by a continuous member having intermediate supports.
Non-Load Bearing Wall: Walls which do not support any loads.
Punch-out: A hole in the web of a steel framing member allowing for the installation of plumbing, electrical, and other trade installation.
Rafter: A structural framing member (sloped) that supports roof loads.
Shear wall: A wall assembly capable of resisting lateral forces to prevent racking from wind or seismic loads acting parallel to the plane of the wall.
Single Span: The span made by one continuous structural member without any intermediate supports.
Span: The clear horizontal distance between bearing supports.
Structural Sheathing: The covering (e.g. steel sheets) used directly over structural members (e.g. studs or joists) to distribute loads, brace walls, and strengthen the assembly.
80 Stud: Vertical structural element of a wall assembly that supports vertical loads and/or transfers lateral loads.
Top Plate: A plate used to carry truss loads from the roof to the studs, where the studs are not located directly under the truss load points. The top plate has a web and flanges but no lips.
Track: Used for applications such as top and bottom plate for walls and band joists for flooring systems. The track has a web and flanges, but no lips. Track web depth measurements are taken to the inside of the flanges.
Web: The part of a C-section or track that connects the two flanges.
Web Stiffener: Additional material that is attached to the web to strengthen the member against web crippling. Also called a bearing stiffener.
Yield Strength: A characteristic of the basic strength of the steel material. It is the highest unit stress that the material can endure before permanent deformation occurs.