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BS ISO 24057:2022

BS ISO 24057:2022

$189.07

Geotechnics. Array measurement of microtremors to estimate shear wave velocity profile

Published By Publication Date Number of Pages
BSI 2022 48
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PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviated terms
3.1 Terms and definitions
10 3.2 Symbols and abbreviated terms
11 4 Equipment
4.1 General
4.2 Sensor
12 4.3 Time calibration equipment
4.4 Data logger
4.5 Distance and location measuring instrument
4.6 Protective products
13 5 Survey procedure
5.1 General
14 5.2 Preparation
5.2.1 Desk study
5.2.2 Array design
5.3 Field observation
5.3.1 Huddle test
15 5.3.2 Setting of sensors
5.3.3 Recording
16 5.4 Data organization after field observation
5.4.1 Quality control of the microtremor record
5.4.2 Data storage
6 Data Analysis
6.1 Data organization after field observation
6.2 Phase velocity analysis
18 6.3 Inversion analysis to S-wave velocity profile
6.4 Uncertainty of phase velocity and S-wave velocity profile
19 7 Reporting
7.1 General
7.2 Field report
21 7.3 Analysis report
23 Annex A (informative) Example of a figure and a table schematic figure of array measurement of microtremors
24 Annex B (informative) Example of microtremor records and analysis results
26 Annex C (normative) Array design
30 Annex D (informative) Frequency characteristics of sensors in huddle test
31 Annex E (informative) Examples of good and poor quality microtremor records
33 Annex F (informative) Methods for phase velocity analysis
40 Annex G (informative) Method for inversion analysis to S-wave velocity profile
42 Annex H (informative) Uncertainty
46 Bibliography

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BS ISO 24057:2022
$189.07