Nomenclature - Glossary of Terms
The extreme outer limits of the structural framing system of a building to which the sheeting is attached.
The condition where a lower building is attached to a higher building at the endwalls, resulting in one building with different eave heights at each end. Sometimes called Roof Transition.
![Step in Eave Height](img/glos/09502095.png)
Plate welded to a member to increase strength of the web or to provide continuity at connections.
![Stiffener](img/glos/09602096.png)
A short extension of material, at an angle to the flange of cold-formed structural members, which adds strength to the member.
The vertical side members of a door frame.
Fasteners used to fasten side laps of panels and for attaching trims or flashing.
Load carrying members. May be hot rolled sections, cold-formed shapes, or built-up sections.
A brace fitted into a framework to resist force in the direction of its length.
![Strut](img/glos/09702097.png)
An additional purlin, in braced bays, located close to the normal purlin at the intersection of roof brace rods or cables and the frame rafter, as required by design.
![Strut Purlin](img/glos/09802098.png)
A partial vacuum, resulting from wind loads on a building, which causes a load in the outward direction.