Specification for Structural Steel Buildings

16.1-xlii
GLOSSARY
Braced frame†. Essentially vertical truss system that provides resistance to lateral forces and
provides stability for the structural system.
Bracing. Member or system that provides stiffness and strength to limit the out-of-plane
movement of another member at a brace point.
Branch member. In an HSS connection, member that terminates at a chord member or main
member.
Buckling†. Limit state of sudden change in the geometry of a structure or any of its elements
under a critical loading condition.
Buckling strength. Strength for instability limit states.
Built-up member, cross section, section, shape. Member, cross section, section or shape fabricated
from structural steel elements that are welded or bolted together.
Camber. Curvature fabricated into a beam or truss so as to compensate for deflection in -
duced by loads.
Charpy V-notch impact test. Standard dynamic test measuring notch toughness of a specimen.
Chord member. In an HSS connection, primary member that extends through a truss connection.
Cladding. Exterior covering of structure.
Cold-formed steel structural member†. Shape manufactured by press-braking blanks sheared
from sheets, cut lengths of coils or plates, or by roll forming cold- or hot-rolled coils or
sheets; both forming operations being performed at ambient room temperature, that is,
without manifest addition of heat such as would be required for hot forming.
Collector. Also known as drag strut; member that serves to transfer loads between floor
diaphragms and the members of the lateral force-resisting system.
Column. Nominally vertical structural member that has the primary function of resisting
axial compressive force.
Column base. Assemblage of structural shapes, plates, connectors, bolts and rods at the base
of a column used to transmit forces between the steel superstructure and the foundation.
Compact section. Section capable of developing a fully plastic stress distribution and possessing
a rotation capacity of approximately three before the onset of local buckling.
Compartmentation. Enclosure of a building space with elements that have a specific fire
endurance.
Complete-joint-penetration (CJP) groove weld. Groove weld in which weld metal extends
through the joint thickness, except as permitted for HSS connections.
Composite. Condition in which steel and concrete elements and members work as a unit in
the distribution of internal forces.
Composite beam. Structural steel beam in contact with and acting compositely with a reinforced
concrete slab.
Composite component. Member, connecting element or assemblage in which steel and concrete
elements work as a unit in the distribution of internal forces, with the exception of
the special case of composite beams where steel anchors are embedded in a solid concrete
slab or in a slab cast on formed steel deck.
Concrete breakout surface. The surface delineating a volume of concrete surrounding a steel
headed stud anchor that separates from the remaining concrete.
Specification for Structural Steel Buildings, July 7, 2016
AMERICAN INSTITUTE OF STEEL CONSTRUCTION