Fixing of beacons

(1) Triangulation, trilateration, or a combination of these techniques for determining the position of beacons shall be carried out in accordance with the procedure laid down in regulations 28 to 32 and the method of computation shall conform with current survey practice. Fixing Beacons. (2) Beacons may also be fixed by20 Land Surveyors (a) intersection, provided at least three suitable rays are observed on to the point to the fixed; (b) resection, provided at least four points in favourable positions for such fixing are observed; (c) any other method which is capable of fixing a point with no less accuracy than that of the methods of intersection and resection: Provided that no point fixed by any of the methods specified in subparagraphs (a), (b) and (c) of this paragraph shall be used to form the basis of further triangulation or trilateration.