a:4:{s:11:"description";a:2:{s:4:"from";s:224:"survey stakes are used to mark out residential boundaries and indicate points and positions of a site. They are usually made of wood (although some are made of metal or plastic) and come in different sizes and coloured tops.";s:2:"to";s:103:"survey stakes are used to mark out residential boundaries and indicate points and positions of a site. ";}s:9:"unit_type";a:2:{s:4:"from";s:0:"";s:2:"to";s:5:"POINT";}s:4:"rate";a:2:{s:4:"from";s:1:"0";s:2:"to";s:1:"5";}s:4:"cost";a:2:{s:4:"from";s:1:"0";s:2:"to";s:2:"20";}}