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- 27 Oct 2004
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We are having a short section of wall built in solid concrete blocks to act as a sound screen around a garden seating area. It is L shaped in plan with lengths of 3.5m and 5m and a height of 2m (9 courses). If we have pillars half way along each section can the wall be a single thickness of 100mm or must it be two blocks thick? It will carry no load other than supporting the ends of some pergola cross pieces.