I'm involved in the renovation of a old building where the client wants to form openings in the internal loadbearing walls to route ductwork and provide some internal doors. Although the wall is rendered, I'm pretty sure its a flemish bond brickwork with an overall thickness of about 300mm. Does anyone have an ideas on how to support the brickwork above, I was thinking a 16mm plate welded to the top & btm of a column section maybe with some hook steel reinforcement welded to the web to bond a concrete infill. Openings are about 600-900mm square.
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