aluminum anchor asphalt attachment boundary boundary post brass burried cable canton cap cemetery cls concrete copper cover driver engraving extension fastening first order marker fixation frost resistant fédéral galvanized beam identification installation legal marker level lid lift magnail magnetic manufacturing marker marking monument nails official ontario operating station pavement pk nails plaque plastic post protection protective cover protector québec rebar rock rod secured marker security sidewalk sign soil stake stamping stamp set standards street terminus ties township washer water level witness zinc