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A list showing the steel mill products to be ordered for a project.
ABM or Advanced Bill of Material or Material list or Material order bill
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A detailed working description for Structural Steel Buildings.
AISC Specification
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American Welding Society's code for Structural Steel.
AWS D1.1
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Steel to which has been added silicon, manganese, nickel or another element(s).
Alloy steel
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A device for fastening steelwork to masonry or concrete.
Anchor
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A rod used to fasten stel columns, girders, etc. to masonry or concrete.
Anchor rod
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A common structural steel shape, the cross section of which is in the form of a right angle.
Angle
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The process of softening metal or making it more uniform by heating and cooling slowly.
Anneal
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Putting the component parts of a member together in the shop preparatory to bolting or welding.
Assembling
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A system of identifying marks used on the compontnt parts of a member to facilitate assembling in the shop.
Assembly marks or Piece marks
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ASD
Allowable Stress Design
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ASTM
American Society for Testing and Materials
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AESS
Architecturally Exposed Structural Steel
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AWS
American Welding Society
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Forces that are applied longitudinally at the center of a member.
Axial forces
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Costs directed to a fabricator or steel detailer for errors in fabrication or detailing.
Back-charge
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A steel detailer's checking of the comments and corrections made by a checker to a document prepared by the steel detailer.
Back-check
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A round or square rod. [Also rolled flats of stock usually 8" or less in width.]
Bar [Bar Stock]
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An angle used to connect the bottom of a column to the base plate.
Base angle
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A load-distributing plate upon which a column bears.
Base plate
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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 transmit shear between them.
Batten plate
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A structural member whose primary function is to carry loads transverse to its longitudinal axis.
Beam
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The stress that occurs when two metal surfaces are in contact and a compressive force is applied perpendicular to the contact surfaces. Also, the stress that occurs where the shanks of bolts in holes or slots come into contact with the surrounding material.
Bearing stress
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The measure of the tendency of a beam, girder or column to bend. It is the sum of the moments of all external forces on one side of the point of moments.
Bending moment
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A planar framework of beams or trusses and the columns that support these members.
Bent
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The slope of a line with respect to another line.
Bevel
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A washer with a sloped outer side.
Beveled washer
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A list of members to be shipped or transported from the shop to the site.
Shipping bill or Bill of finished parts
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A furnace in which iron ore is reduced to pig iron.
Blast furnace
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To remove part of the top and/or bottom flange and adjacent web at the end of a beam to avoid its interference with another member.
Cope or Block
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To enlarge a punched or drilled hole by means of a cutter that accurately pares the inner surfaces of the hole to fit a pin.
Bore
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A girder with two or more web plates, which, with coverplates, form a closed box.
Box girder
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A member in which the component parts enclose a space that is accessible only at the ends.
Box section
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A diagonal member placed between panel points in a frame of other members to make a structure more rigid.
Brace
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A frame in which the resistance to lateral load or frame instability is provided primarily by a diagonal or other system of bracing
Braced frame
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A series of diagonals and struts placed between main members to resist wind or other lateral forces.
Bracing system
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A projecting type of a connection usually made of a tee, a combination of plates, or a plate and angles.
Bracket
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The deflected position taken by a straight member under the influence of a compression load.
Buckle
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A compilation of the laws and ordinances that relate to building construction.
Building code
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A member made of structural steel elements that are welded or bolted together.
Built-up member
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A joint in which the ends of the parts connected are cut to bear against each other. The ends are held in place by splice plates or by welding.
Butt joint
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A type of weld in which the edge or end of a piece is welded to the edge or end of another piece so that the pieces are in line.
Butt weld
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A rounded head of a bolt as distinguished from one that is hexagonal, countersunk or square.
Button head
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A comparatively flat vertical curve placed in a truss, beam or girder to counteract a part of the deflection.
Camber
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A beam or girder that projects beyond one or both supports and is free to deflect at the end. Or it may have one end fixed at a support and the other end free or unsupported.
Cantilevered beam or girder
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The orientation of a beam or girder that is perpendicular to the face of a supporting member, but rotated so that its flanges are tilted with respect to those of the support.
Canted
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An angle or plate at the top of a column or portion of a column.
Cap angle or Cap plate
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Anything formed by pouring molten iron, steel or other material into a mold and allowing it to harden.
Casting
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That point through which the resultant of the forces of gravity acting upon a body in any position must pass. If the body could be supported at this single point, it would remain in equilibrium in any poisition.
Center of gravity or Centroid
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A cylindrical piece of steel with a sharp point protruding from one end. It is inserted in the holes of templates and struck with a hammer to make indentations in the steel to indicate where holes are to be punched.
Center punch
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