Vertical Bracing – Setting Out

Here, we’ll be looking at the setting-out procedure for Concentric vertical bracing using gusset-plates, the general principles will apply to all bracing configurations irrespective of member sizes. Concentric bracing implies that the Work-Points are derived from the center-line intersections of the beam, column, and bracing member. The center-lines represent the neutral axes of the members, …

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Vertical Bracing

The Vertical Braced-Frame is the most straightforward and efficient vertical stabilizing system. It’s fairly straightforward to resolve, and equally straightforward to fabricate and erect. Braced frames are flexible in the sense that they can be adapted to suit almost any conditions and a wide variety of load combinations. Bracing is also the most economical stabilizing …

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Vertical Shear Walls

Shear walls may be constructed from steel plate, reinforced concrete, or masonry, and are usually to be found in structures built is seismically active zones. A shear-wall could loosely be described as a solid infill brace, often placed within the confines of the structure to assist the primary stabilizing system located at the periphery. Shear-walls …

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Vertical Leaned Frames

A leaned frame is fairly self-descriptive; it is employed mostly in single-storey or low-rise / multi-bay structures where one of the bays is designed as a rigid frame, while the others, as Pin-Jointed frames lean against it. The Rigid Bay, though illustrated over as a moment resisting rigid frame, may be any of the other …

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Vertical Rigid Frames

Rigid or Moment Frames seem uncomplicated and straightforward in appearance and resemble simple post and beam construction, but in fact, they are radically different in structural behavior. The best way to describe rigid frames is to compare them with pin-ended braced structures. The horizontal beams in a braced frame are subject to ‘bending’ when a …

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Horizontal Diaphragms

Diaphragms are usually incorporated into Multi-Storey commercial structures and typically consist of Profiled Steel Decking with a reinforced concrete floor cast in-situ.  The decking not only acts as a permanent shutter, but it also provides sufficient shear-bond with the concrete by means of the shear-studs, so that when the concrete has gained sufficient strength the …

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Horizontal Bracing

Horizontal braced frames are usually found in industrial type structures, where due to their open nature Composite Floors are not an option. Lateral force distribution is achieved by, what is effectively a Horizontal Triangulated Girder or Truss. The bracing system may be configured in any number of ways, depending on the limitations and/or the requirements …

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