Respuesta :
In a brick veneer curtain wall supported on a steel shelf angle bolted to a reinforced concrete frame, a soft joint (horizontal expansion joint) must be provided beneath each shelf angle to accommodate long term column creep dimensional tolerances.
Through an insert cast into the slab, a shelf angle is joined to a concrete frame. A shelf angle is fastened to a steel frame using a clip angle, a shim plate, and an adjustable slot in the shape of a wedge. The typical feature of a brick veneer cavity wall with a concrete block backup wall shows a soft connection or horizontal expansion joint. Joints are made to accommodate dimensional tolerances, brick expansion, spandrel beam displacement, and column creep.
Therefore, in a brick veneer curtain wall supported on a steel shelf angle bolted to a reinforced concrete frame, a soft joint (horizontal expansion joint) must be provided beneath each shelf angle to accommodate long term column creep dimensional tolerances.
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