C Shapes A hot rolled shape called an American Standard Channel with symbol C. C Section A structural member cold-formed from sheet steel in the shape of a block C which can be used by itself or back to back with another C Section. CAD Abbreviation for Computer-Aided Drafting. Calipers A mechanical instrument usually having a pair of pivoted legs adjustable to any distance and used to measure thichness, distances between surfaces, and any internal or external diameter which is inaccessible with a scale. Camber Camber is an upward curvature of the chords of a joist or joist girder induced during shop fabrication to compensate for deflection due to loading conditions. Note, this is in addition to the pitch of the top chord. Canopy A projecting member that is supported at one end only. Cant Strip A deck accessory which is a short piece of gage steel used at 45 degrees where a wall or parapet meets the end of deck. Canted Seat A seat which is sloped perpendicular to the member which most joist manufactures do not do. Usually the steel contractor furnishes a bent plate shim to provide level bearing for the seat. Cantilever The part of a member that extends freely over a support which is not supported at its end. Cap Plate A steel plate welded to the top of a column which a joist, joist girder, or other structural member can bear on. Catwalk Suspended structural framing used to provide access to and between areas below a roof and above a floor. Ceiling Extension Is similar to a bottom chord extension except that only one angle of the joist bottom chord is extended from the first bottom chord panel point towards the end of the joist. Centerline Span (or Center-to-Center) A theoretical span definition which is the distance between the actual centerlines of a beam, column, joist, or joist girder. Centroid The point in a member at the intersection of two perpendicular axes so located that the moments of the areas on opposite sides of an axis about that axis is zero. Certified Welder A welder who has been certified by a competent experienced welding inspector or a recognized testing facility in the field of welding. The welder must be certified to make certain welds under qualified procedures. The welder must be qualified for each position, type weld, electrode, and thickness of base metal that is to be welded in the shop or field. Change Order A written document which modifies the plans, specifications, or price of a construction contract. Channel A hot rolled structural shape the looks like [. There are American Standard Channels designated by (C) and Miscellaneous Channels designated by (MC). Chord The two angle top or bottom member of a joist or joist girder, usually with a gap between the angles. Cladding The exterior covering of the structural members of a building. Clear Span The actual clear distance or opening between supports for a structural member, i.e., the distance between walls or the distance between the edges of flanges of beams. Clevis A U-shaped yoke with internal threads in one end which can be attached to a threaded rod and the other end a connection with a hole used for a pin or bolt attchment. Clip Angle A structural angle which attaches to the side of a wall, column, beam, etc. where a joist, joist girder, or other structural member bears. Closure Strip A floor deck accessory made of gage metal which is placed over the ends of deck so that concrete cannot run out of the flutes of the deck. Coefficient of (Linear) Expansion The change in length, per unit, for a change of one degree of temperature. Cold-Formed The process of forming a structural section by bending sheet or strip steel in roll-forming machines without the use of heat. Collateral Load All additional dead loads other than the weight of the building, such as sprinklers, pipes, ceilings, and mechanical or electrical components. Column Is a main vertical member carrying axial loads, which can be combined with bending and shear, from the main roof beams or girders to the foundation. These structural members carry loads parallel to its longitudinal axis. Column Curve A curve which shows the relationship between axial column strength and slenderness ratio. Compact Section A steel section whose flanges must be continuously connected to the webs and the width-thickness ratios of its compression element can not exceed the limiting width-thichness ratios designated in the AISC Manual. Composite Beam A steel beam and a concrete slab connected, usually by shear stud connectors, so that they act together to resist the load on the beam. Compression A condition caused by the action of squeezing or shortening of a component. Compression Member Any member in which the primary stress is longitudinal compression. Concentrated Load A single load or force that has such a small contact area as to be negligible compared with the entire surface area of the supporting member and applied at a certain point on the structure. Connection A joint connected by welds or bolts used to transmit forces between two or more members. See also Splice. Continuity The term given to a structural system denoting the transfer of loads and stresses from member to member as if there were no connections. Continuous Span A span that extends over several supports and having more than two points. Continuous Weld A weld which extends continuously from one end of a joint to the other. Contract A legal document or agreement, enforceable by law, between two or more parties for the doing of something specified, such as the building of a building or furnishing materials. Contract Documents Contract drawings, specifications, etc., used to build a structure which define the responsibilities of the parties involved. Contract Drawings All the architectural, structural, mechanical, electrical, etc. plans that make up a legal set of contract documents to build a building by. Conventional Framing Framing using conventional joist, beams, columns, masonry walls, etc. instead of framing used in Metal Building construction. Coping The process of removing certain sections of a structural steel member to allow easier fitup to the supporting structural member. Corbel Successive courses of masonry projecting from the face of a wall to increase its thickness or to form a shelf or ledge for a structural member to bear on. Cover Plate A long plate usually welded to the top or bottom flange of a rolled steel beam or to the bottom chord of a joist or joist girder to increase the load carrying capacity of that member. Coverage The width of a deck sheet, i.e., 30 inches or 36 inches. Crane 1) A machine used to move material by means of a hoist. 2) A machine that can usually move and is used to lift heavy materials or to lift members that are to be erected in a structure. Creep A time-dependent deformation of a structural member under a sustained constant load. Cricket A ridge or drainage diverting roof framing. Crimped Angle Web A regular angel whose ends have been crimped in the shape of a U whose out-to-out distance is usually one inch. The actual crimped portion of the angle is only a few inches on each end and the end is inserted between top or bottom chord members to be welded. Critical Load The load at which deflection of a member or structure occurs as determined by stability analysis. CSI (Construction Specifications Institute) Abbreviation. Curb A raised edge of a concrete floor slab or support for a mechanical unit. Curtain Wall A non-load bearing exterior wall which carries only its own weight and wind load. Curvature The rotation per unit length of a member due to bending forces. Cut-List A list of components with dimensions used for fabrication and accounting purposes. See Bill of Materials.
Posted on: Mon, 02 Dec 2013 17:19:24 +0000
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