IS 4967 : 2025 Earthquake Instrumentation of Dam Projects
1 SCOPE
1.1 This standard provides recommendations on technical specifications for the instrumentation of dams when required, for near real-time monitoring of dams and the associated built structures that are part of existing dam projects towards realistic earthquake response estimation of structures, earthquake hazard monitoring and defining earthquake design criteria for structures to be built in future in that region.
1.2 The purpose of this standard is to guide in:
a) Selecting the type, specifications, number, and location of instruments to be placed adjoining and on a dam to:
1) determine sources (namely magnitude, hypocentral location, and source mechanism) of earthquakes in the geological neighbourhood of existing dams;
2) capture earthquake ground motions and structural response of the dam; and
3) study the possibility of the reservoirs triggering earthquakes.
b) Identifying the method of installation of instruments, requirements of data acquisition, methods of data processing, protocols for data archiving of the earthquake shaking at and adjoining the dam site, earthquake responses of the dam, and schedules for maintenance of the instruments; and
c) Tuning the analytical models to match the measured dynamic characteristics of the dams, which are used in the earthquake analysis as part of the processes of structural design and structural assessment phases.
1.3 The provisions of this standard may be adopted in dam projects, after suitably customizing to meet the needs of such projects. In such cases, the requirements specified by this standard shall be taken as at least the minimum that should be met with.
2 REFERENCES
The standards given below contain provisions which through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of these standards:
| IS No. | Title |
| IS 1893 : 1984 | Criteria for earthquakeresistant design of structures (fourth revision) |
| IS 1893 (Part 1) : 2025 | Criteria for earthquake resistant design of structures: Part 1 General provisions (seventh revision) |