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Abstract:
Survey monuments are the primary and lasting evidence that a surveyor has worked on a piece of land. They are the linkage between the plan produced by the surveyor and the land bounded by these monuments. These monuments should not be disturbed, shifted, mispositioned or displaced after emplacement otherwise the survey operation based on them are of no significance. However, some survey monuments may be established on grounds that are prone to dynamic movements. This may cause shifts to the emplaced monuments. This paper discusses the checks that should be conducted on the emplaced monuments to ascertain that they have not experienced any appreciable movements since their emplacements. Furthermore, a case study of a monument placed in a suspected dynamic environment along Idah-Ajaka road in Kogi State, Nigeria was undertaken and its results analyzed. It was observed that after the coordinates were recomputed there was no significant change in coordinates. Hence, the need to construct monuments on built rocks and deep soils to enable survey monuments have sustainable anchorage.
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