dp. Is the acronym for down pipe Set-Back plan issue amendment area Length In Millimetres Scale Bar Boundary Junction Windows Can Be Doors Windows Can Be Doors Windows Can Be Doors Basix Window Numbers Basix Window Numbers Basix Window Numbers Basix Window Numbers Balustrade Floor Level Floor Level Floor Level Leg Room Under Bench Overhead cupboards Kitchen True North Section Roof Overhang Column, usually timber unless noted Cupboard Bulkhead Over Scale - This means that 1cm on your rule equals 1000mm or 1 metre