Standards Development

Scope

This document specifies the measurement of settlement of geotechnical structures/works or structures influenced by geotechnical works by means of hydraulic settlement systems. General rules of performance monitoring of the ground, or structures interacting with the ground, of geotechnical fills and of geotechnical works are presented in ISO 18674-1:2015.

This document is applicable to:

— monitoring of settlement acting onto, or within, geotechnical structures such as embankments, excavations, compensation grouting, tunnel lining, railways, roads and other civil structures;

— checking geotechnical designs and adjustment of construction in connection with the Observational Design procedure;

— evaluating (subsoil) stability during or after construction.Not subject of this document are horizontal inclinometers, which are dealt with in reference [1] nor monitoring devices based on a geodetical principle such as total stations or other optical level instruments, which are dealt with in reference [2].

NOTE 1 This document fulfils the requirements for the performance monitoring of the ground, of structures interacting with the ground and of geotechnical works by the means of hydraulic settlement systems as part of the geotechnical investigation and testing in accordance with References [3] and [4].

NOTE 2 Throughout the text, settlement is used as a general term, referring to both heave and settlement.