When it is OK to bury plastic!

Faced with a structural problem of adding top soils behind a dry stone retaining wall – we were advised by our structural engineers ( Brenda Marsh at Hannah Reid ) to build up the levels in polystyrene blocks, designed for the purpose. The hole has been dug and blocks of polystyrene 610mm x 1200mm x 2400mm ( the size of a baby elephant! ) have been laid in. These blocks will be buried and a Spanish terrace built on top.
My only question remains as to what our successors will think in later archaeological digs when they strike polystyrene?

Posted by Liz Nicholson