Steel Buildings - Glossary of Common Terms
D
Damper
A baffle used to open or close the throat of ventilators. A damper may be motorized or operated manually.
A baffle used to open or close the throat of ventilators. A damper may be motorized or operated manually.
Dead Load
The weight of all permanent construction in a steel building system, such as floor, roof, framing, and covering members.
The weight of all permanent construction in a steel building system, such as floor, roof, framing, and covering members.
Deflection
The displacement of a structural member or system under load.
The displacement of a structural member or system under load.
Design Loads
Loads specified in recognized building codes or in owner's specifications to be used in the design of a steel building.
Loads specified in recognized building codes or in owner's specifications to be used in the design of a steel building.
Design Professional
An architect or engineer with the responsibility of specifying the specific design requirements of a steel building system.
An architect or engineer with the responsibility of specifying the specific design requirements of a steel building system.
Diaphragm Action
The resistance to racking generally offered by the covering system, fasteners, and secondary framing.
The resistance to racking generally offered by the covering system, fasteners, and secondary framing.
Door Guide
An angle or channel used to stabilize or keep plumb a sliding or rolling door during operation.
An angle or channel used to stabilize or keep plumb a sliding or rolling door during operation.
Downspout
A conduit used to carry water from the gutter of a building
A conduit used to carry water from the gutter of a building
Drift Pin
A tapered pin used during erection to align holes in steel members to be connected by bolting.
A tapered pin used during erection to align holes in steel members to be connected by bolting.
Eave
The line along the sidewall created by the intersection of the of the roof and wall planes.
The line along the sidewall created by the intersection of the of the roof and wall planes.
Eave Height
Describes the vertical distance between the floor and the top of the eave strut.
Describes the vertical distance between the floor and the top of the eave strut.
Eave Strut
A structural member located at the eave of a steel building that supports roof and wall paneling.
A structural member located at the eave of a steel building that supports roof and wall paneling.
Edge Strip
The surface area of a building at the edges of the roof and corners of the walls where the wind loads on components and cladding are greater than at other areas of the building.
The surface area of a building at the edges of the roof and corners of the walls where the wind loads on components and cladding are greater than at other areas of the building.
Effective Wind Area
The area used to determine the wind coefficient. The effective wind area may be greater than or equal to the tributary area.
The area used to determine the wind coefficient. The effective wind area may be greater than or equal to the tributary area.
Elastic Design
A design concept that allows non-permanent shape distortion under a specified range of loading.
A design concept that allows non-permanent shape distortion under a specified range of loading.
End Approach
The minimum horizontal distance, parallel to the runway, between the outer-most extremities of the crane and the centerline of the hook.
The minimum horizontal distance, parallel to the runway, between the outer-most extremities of the crane and the centerline of the hook.
End Bay
Any bay that is adjacent to the endwalls of a building. Usually the distance from the endwall to the first interior main frame would be described as an end bay.
Any bay that is adjacent to the endwalls of a building. Usually the distance from the endwall to the first interior main frame would be described as an end bay.
End Frame
A frame located at the endwall of a building that absorbs the load from a portion of the end bay.
A frame located at the endwall of a building that absorbs the load from a portion of the end bay.
End Stop
A device attached to a crane runway or rail to provide a safety stop at the end of a runway.
A device attached to a crane runway or rail to provide a safety stop at the end of a runway.
Endwall
An exterior wall that is parallel to the interior main frames of the building.
An exterior wall that is parallel to the interior main frames of the building.
Endwall Column
A vertical member located at the endwall of a building that supports the girts. In post and beam endwall frames, endwall columns also support the rafter.
A vertical member located at the endwall of a building that supports the girts. In post and beam endwall frames, endwall columns also support the rafter.
Engineer/Architect of Record
The engineer or architect who is responsible for the overall design of the building project. The manufacturer's engineer would not be considered the Engineer of Record.
The engineer or architect who is responsible for the overall design of the building project. The manufacturer's engineer would not be considered the Engineer of Record.
Erection
The assembling of steel building components to form a complete structure.
The assembling of steel building components to form a complete structure.
Erection Bracing
Temporary bracing used by erectors to stabilize the building system during erection of a steel building system.
Temporary bracing used by erectors to stabilize the building system during erection of a steel building system.
Erection Drawings
Roof and wall erection (framing) drawings that identify individual components and accessories furnished by the manufacturer in sufficient detail to permit proper Erection of the Metal Building System.
Roof and wall erection (framing) drawings that identify individual components and accessories furnished by the manufacturer in sufficient detail to permit proper Erection of the Metal Building System.
Erector
A party who assembles or erects a steel building system.
A party who assembles or erects a steel building system.
Expansion Joint
A break or space in construction to allow for thermal expansion and contraction of the materials used in the structure.
A break or space in construction to allow for thermal expansion and contraction of the materials used in the structure.