AISC LRFD 1.pdf

xxiiiGLOSSARYAlignment chart for columns. A nomograph for determining the effective length factor Kfor some types of columnsAmplification factor. A multiplier of the value of moment or deflection in the unbracedlength of an axially loaded member to reflect the secondary values generated by theeccentricity of the applied axial load within the memberAspect ratio. In any rectangular configuration, the ratio of the lengths of the sidesBatten plate. A plate element used to join two parallel components of a built-up column,girder, or strut rigidly connected to the parallel components and designed to transmitshear between themBeam. A structural member whose primary function is to carry loads transverse to its longitudinalaxisBeam-column. A structural member whose primary function is to carry loads both transverseand parallel to its longitudinal axisBent. A plane framework of beam or truss members which support loads and the columnswhich support these membersBiaxial bending. Simultaneous bending of a member about two perpendicular axesBifurcation. The phenomenon whereby a perfectly straight member under compressionmay either assume a deflected position or may remain undeflected, or a beam underflexure may either deflect and twist out of plane or remain in its in-plane deflected positionBraced frame. A frame in which the resistance to lateral load or frame instability is primarilyprovided by a diagonal, a K brace, or other auxiliary system of bracingBrittle fracture. Abrupt cleavage with little or no prior ductile deformationBuckling load. The load at which a perfectly straight member under compression assumesa deflected positionBuilt-up member. A member made of structural metal elements that are welded, bolted, orriveted togetherCharpy V-notch impact test. A standard dynamic test in which a notched specimen isstruck and broken by a single blow in a specially designed testing machine. The measuredtest values may be the energy absorbed, the percentage shear fracture, the lateralexpansion opposite the notch, or a combination thereofCladding. The exterior covering of the structural components of a buildingCold-formed members. Structural members formed from steel without the application ofheatColumn. A structural member whose primary function is to carry loads parallel to its longitudinalaxisLRFD Specification for Structural Steel Buildings, December 27, 1999AMERICAN INSTITUTE OF STEEL CONSTRUCTION