From the glossary of Detailing For Steel Construction Second Edition
The Society for Protective Coatings or the Steel Structures Painting Council
A wooden strip bolted to a steel beam or similar member to which strip planking or sheathing may be nailed or spiked.
A small round or square rod bent in the form of a helix, used in reinforced-concrete columns to prevent the longitudinal reinforcing bars from spreading.
The connection between two structural elements joined at their ends to form a single, longer element.
A beam that is split to form a structural tee or bracket. Also, a beam split part way with one flange bent out to permit welding a plate in the web for strengthening the joint for rigid-frame construction.
The placement of a spot of paint on the faying surface of a single-angle, single-plate or tee. It is one of several methods used to alert the erector as to which side to connect a supported member.
Bolts which alternate on two parallel bolt lines.
The product of an area times the distance from an axis to the center of gravity of the area.
A modified form of iron used in construction.
And individual who uses contract documents to make detailed working drawings for each piece of steel to be furnished by a fabricator and erected by an erector.
A member, usually an angle or plate, attached to a plate or to the web of a beam, girder or column. Its purpose is to distribute load, transfer shear, or prevent buckling of the member to which it is attached.
Bolts used to hold the angles of a multi-shape member together at intervals. If the elements are seperated by connection (gusset) plates, a stitch filler is placed between them at each stitch bolt to maintain a constant space.
The deformation in a member caused by external forces. Measured in linear units.
Limiting condition affecting the safety of the structure, in which the ultimate load-carrying capacity is reached.
Strength limit state
Force per unit area, such as pounds per square inch/foot.
Localized stress considerably higher than average as a result of abrupt changes in geometry or localized loading.
Shim consisting of a narrow piece of structural steel punched with round holes.
The placement of a stripe of paint on the faying surface of a single-angle, single-plate or tee. It is one of several methods used to alert the erector as to which side to connect a supported member.
The major principal axis of a cross section denoted as the X-X axis.
Documents prepared by the designer (plans, design details and job specifications). These documents define the responsibilities of the parties involved in bidding, purchasing, supplying and erecting structural steel.
Structural design documents
The preperation of the working drawings for the members in a structure.
A shop where rolled steel shapes and plates are punched, cut, bolted, welded and otherwise prepared for erection in a steel structure.
A T-shaped member made by cutting a W, M or S shape in two along the length of its web.
A comparatively light compression member, usually with no intermediate connections.
To punch a hole to a smaller diameter than required, that will be reamed after parts are assembled.
The concrete piers or foundation for a structure.
The main part of the structure above the concrete foundation or sub-structure.
Bracing in a vertical plane as between the roof trusses of a mill building.
A comparatively flat horizontal curve in a beam or girder induced through cold bending or by the application of heat.
A type of anchor rod threaded at one end for a nut and having depressions in the remaining length of shank to furnish bond when embedded in masonry or concrete.
A full-size pattern or guide (made of wood, cardboard or steel) used to locate punched or drilled holes and cuts or bends to be made in the steel.
The condition of a material loaded in such a way that the load tends to stretch the material in the direction of its length
An alternative design type of fastener with a splined end extending beyond the threaded portion of the bolt. The bolt is installed using a special wrench to remove the splined end when the proper pretension is induced in the bolt.
Tension-control (twist-off) bolt
A member in which the principal stresses tend to lengthen the member.
The maximum tensile stress that a material is capable of sustaining.
In a fillet weld the distance from the root to the face of the weld.
A light tension member, such as the diagonal in a bracing system.
A plate for holding the component parts of a member at the proper distance apart. Generally used in tension members.
A term relating to a length of column supporting one, two or three floors of steel.
Termination point of fillet weld or of rolled section fillet.
Toe of the fillet
A connection angle used at the top of a beam in conjunction with a seat angle on a column or in a girder web.
The action of applied load(s) that tend to twist a member.
Paper specially treated to make it transparent so that copies can be made of drawings on it.
A crane mounted on a mobile truck.
A framed structure that acts like a beam. The principal members usually form a series of triangles and each member primarily is subjected to axial stress/loads only.
Similar to a sleeve nut except that a transverse opening is provided at the center for the insertion of a crowbar for turning the turnbuckle.
Procedure whereby the specified pretension in high-strength bolts is controlled by rotation of the nut a predetermined amount after the snug-tightened condition has been achieved.
A rod bent in the shape of the letter U with each end threaded for nuts.
A groove melted into the base metal adjacent to the weld toe or weld root and left unfilled by weld metal
The amount of decrease in the actual length of a structural shape over the theoretical dimension indicated on the drawing or advance bill. Also, the amount of decrease in the actual cross section dimensions from those published in ASTM A6, A500 or A53 (as summarized in the AISC Manual of Steel Construction)