12. Land surveyors shall ensure that sufficient territory is covered to support their opinion in order to establish the location of the structure or structural features to be erected or modified, in relation to the boundaries of the immovable property, another existing structure or other reference lines.
All survey operations carried out for layout purposes shall be recorded in clearly written notes that faithfully show the state of the premises and their location, in particular any mark of occupation or encroachment sign, as well as the starting points or lines and the course followed to carry out the layout.