A historically common type of scaffolding, putlog holes date from the ancient Roman buildings. The term putlock or the newer term putlog date from the 17th century. and is still used today. Putlogs may be supported on the outer ends by vertical poles (standards), cantilever by one end being firmly embedded in the wall, or cantilever by penetrating the wall providing scaffolds on both sides. Putlogs may be sawn off flush with the wall if they cannot be removed but exterior putlog holes are typically filled in as the scaffold is removed to prevent water from entering the walls. Interior putlog holes may be left open, particularly if not in a finished space. The inconsequential size and the spacing of the holes meant that they did not affect the solidity of the walls, and in well-preserved ca
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