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Portal frames can be defined as two-dimensional rigid frames that have the basic characteristics of a rigid joint between column and beam. The main objective of this form of design is to reduce bending moment in the beam, which allows the frame to act as one structural unit. The transfer of stresses from the beam to the column results in ...
The roof of this industrial building is supported by a space frame structure. If a force is applied to the blue node and the red bar were not present, the resultant effect on the structure would depend entirely on the blue node's bending rigidity, i.e. to its resistance (or lack thereof) to bending; however, with the red bar in place, then assuming negligible bending rigidity of the blue node ...
Bent (structural) A bent in American English is a transverse rigid frame (or similar structures such as three-hinged arches ). Historically, bents were a common way of making a timber frame; they are still often used for such, and are also seen in small steel-frame buildings, where the term portal frame is more commonly used.
The Boat Shed (Number 78) at Sheerness Naval Dockyards, built 1856–60, is constructed entirely of a cast and wrought iron members, braced as portal frames, with extensive window and timber infill panels forming the external walls. Though not entirely of cast iron, it is the earliest large metal framed building still standing, and a pioneer in ...
A Rigid-frame bridge is a bridge in which the superstructure and substructure are rigidly connected to act as a continuous unit. Typically, the structure is cast monolithically, making the structure continuous from deck to foundation. The connections between members are rigid connections which transfer bending moment, axial forces, and shear ...
A door is a hinged or otherwise movable barrier that allows ingress (entry) into and egress (exit) from an enclosure. The created opening in the wall is a doorway or portal. A door's essential and primary purpose is to provide security by controlling access to the doorway (portal). Conventionally, it is a panel that fits into the doorway of a ...
Website wireframe. A website wireframe, also known as a page schematic or screen blueprint, is a visual guide that represents the skeletal framework of a website. [ 1]: 166 The term wireframe is taken from other fields that use a skeletal framework to represent 3 dimensional shape and volume. [ 2] Wireframes are created for the purpose of ...
Portal (architecture) A portal is an opening in a wall of a building, gate or fortification, especially a grand entrance to an important structure. [ 1][page needed] Doors, metal gates, or portcullis in the opening can be used to control entry or exit. The surface surrounding the opening may be made of simple building materials or decorated ...