Contract notice Ground Investigation ServicesWave induced stress distribution in sediments and soil tidal banks of the Tide ElbeDescription Work package 1 Planning the field measurement campaigns In this AP the Watt SST system three sensor heads field installation instruments data logger data transmitter is to be prepared and tested for the actual measurement campaigns in the field The test data are to be analyzed with regard to the reliability of the measurement sensor system and the data sets output If this results in discrepancies in the data records troubleshooting is to be carried out Technical corrections such as B Alignment of the sensor heads field installation of the sensors or modification of the logging frequencies I Test the SST sensors Carrying out 4 one day test runs with controlled predetermined hydromechanical pressure loads e g in test tanks with pressure generator Check and analysis of data generation through IT equipment data recording data storage and transfer Test for suitability and robustness for use in the field e g water and salt water resistance protection against vandalism etc Evaluation of the test data obtained for the reliability of the sensors by statistical analysis of the input values specified pressures and output values measured values Carrying out a troubleshooting as well as carrying out the necessary technical optimizations e g alignment of the sensor heads field installation of the sensors modification of the logging frequencies on the sensors Ii Draft investigation design Inspection and aptitude test in situ at the field site Hollerweather Determination of the installation position of the measuring sensor in a position exposed to waves on the longitudinal bank profile bank transverse profile positioning between mTnw and mThw as well as in the depth profile for measuring wave and ground pressures 1 consultation meeting with AG and WSV in Hamburg 2 months after project start Work package 2 Implementation of the field measurement campaigns I Summer 2020 A period of 4 months must be set for this The start of the campaign is determined by suitable weather conditions for the installation of the field experiments especially construction e g no heavy rain no flood no storm 2 weeks trial run continuous measurements 4 weeks in a row On site support of the sensors checking the tightness checking the position stability readjusting if necessary checking damage to the measuring heads and the data logger and data transfer interfaces technical check of the data flow carrying out a troubleshoot Ii summer 2021 A period of 4 months must be set for this The start of the campaign is determined by suitable weather conditions for the installation of the field experiments especially construction e g no heavy rain no flood no storm 2 weeks trial run continuous measurements 4 weeks in a row On site support of the sensors checking the tightness checking the positional stability readjusting if necessary checking damage to the measuring heads as well as the data logger and the data transfer interfaces technical check of the data flow carrying out a troubleshoot Work package 3 data evaluation I measurements Preparation of the raw data normal voltages and data backup on a digital mass storage medium e g hard disk and the BSCW server access is provided by the AG Transformation of the raw data to directed voltages with conversion algorithms using the statistical program RIi statistical analysis for the deduction and parameterization of multivariate functional qualitative and quantitative relationships between the measured values for the hydromechanical pressure and the measured values for the distribution of soil tension as well as other environmental parameters e g AIS data for ship passages inclination of the mudflats mudflats and banks chemical soil analysis data including the soil mechanical and rheological data records from the ElbStabil I and II projects will be made available by the BfG for exclusive use within the project after the order has been placed including the hydroecological data of the measurement site Hollerwetter hydrology morphology soil vegetation data are provided by the BfG after the order has been placed for exclusive use within the project Iii Development of a stability model for mud flats and riverside floorsFinally with the work carried out in sub items i and ii a stability model for mud flats and raw marshes for near natural banks of the Tide Elbe between mTnw and mThw is parameterized set up and operationalized The programming language R or Python must be used for this A graphical userTime limit for receipt of tenders or requests to participate Date 03 08 2020 Local time 12 00 Disclaimer The above text is machine translated For accurate information kindly refer the original document
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