Issue link: http://alpine.uberflip.com/i/493471
GLOSSARY 1 2 3 4 5 6 7 8 8.02 Accepted Engineering Practice An engineering approach that conforms to accepted principles, tests, technical standards, and sound judgment. ASD (Allowable Strength Design) Method of proportioning structural components such that the allowable strength equals or exceeds the required strength of the component under the action of the ASD load combinations. ASD Load Combination Load combination in the applicable building code intended for allowable strength design (allowable stress design). Allowable Strength* Nominal strength divided by the safety factor, Rn/Ω. Applicable Building Code Building code under which the structure is designed. Available Strength* Design strength or allowable strength as appropriate. Approved Approval by a building official, code official, design professional, or authority with jurisdiction. Axial Force The number of pounds of tension or compression in a truss member acting parallel to the length of the member resulting from a load applied to the truss. Base Metal Thickness The thickness of bare steel exclusive of all coatings. Bearing Structural support of a truss, usually walls, beams, concrete slabs and hangers. Bending Moment A measure of the amount of bending in a member due to forces acting perpendicular to the member. Blocking C-shaped, track, brake shape, or flat strap material attached to structural members, flat strap, or sheathing panels to transfer shear forces. Bottom Chord A horizontal (or inclined in a scissor truss) member that establishes the lower edge of the truss, usually carrying combined tension and bending stresses. Braced Frame An essentially vertical truss system that provides resistance to lateral loads and provides stability for the structural system. Collateral Load The weight of any non-moving equipment or material, such as ceilings, electrical or mechanical equipment, sprinkler systems, plumbing, or ceilings. Combined Stress The combination of axial and bending stresses or shear and bending stresses acting on a member simultaneously. These stresses typically occur in both top and bottom chords. Concentrated Load A load, in addition to uniform design loads, applied at a specific point. Examples include cranes, hoists, HVAC equipment and sprinkler pipes. Compression A force caused by loads being placed on a member that causes a squeezing or shortening effect of the member as in the top chord of a truss when load is applied. Component Assembly A fabricated assemblage of cold-formed steel structural members that is manufactured by the component manufacturer, which may also include structural steel framing, sheathing, insulation or other products. Component Design Drawings The written, graphic and pictorial definition of an individual component assembly, which includes engineering design data. Component Designer The individual or organization responsible for the engineering design of component assemblies. See Truss Designer. Component Manufacturer The individual or organization responsible for the manufacturing of component assemblies for the project. See Truss Manufacturer. Component Placement Diagram The illustration supplied by the component manufacturer identifying the location assumed for each of the component assemblies which references each individually designated component design drawing. ENGINEERED BY ALPINE R E F E R E N C E S / R E S O U R C E S Bracing Structural elements that are installed to provide restraint or support (or both) to other framing members so that the complete assembly forms a stable structure. Bridging Cross-bracing or blocking placed between joists to provide lateral support. Buckling A kink, wrinkle, bulge, or other loss in the original shape of a member due to compression, bending, bearing, or shear loads. Building Designer Also referred to as design professional and registered building designer is an individual or organization responsible for the overall building design in accordance with the statutes and regulations governing the professional registration and certification of architects or engineers of the jurisdiction where the building will be located. Camber An upward vertical displacement built into a truss, usually to offset deflection due to dead load. Cantilever The part of a structural member that extends beyond its support. Chord Member A structural member that forms the top or bottom component of a truss. Clear Span Horizontal distance between interior edges of supports. Cold-Formed Sheet Steel Sheet steel or strip that is formed by (1) press-braking blanks sheared from sheets or cut length of coils or plates, or by (2) continuous roll forming of cold- or hot-rolled coils of sheet steel; both forming operations are performed at ambient room temperature, that is, without the addition of heat such as would be required for hot forming. 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.