5. During a laboratory consolidation test, the time and dial gauge readings obtained from an increase of pressure on the
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- 5 During A Laboratory Consolidation Test The Time And Dial Gauge Readings Obtained From An Increase Of Pressure On The 1 (75.17 KiB) Viewed 38 times
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5. During a laboratory consolidation test, the time and dial gauge readings obtained from an increase of pressure on the specimen from 50 kN/m² to 100 kN/m² are plotted as shown in Fig. 3. The average height of the specimen during consolidation was 2.24 cm, and it was drained at the top and bottom. (1) Use the procedure proposed by Casagrande and Fadum (1940) to determine the coefficient of consolidation, c Dial reading, cm 17.0% A 3 m thick layer beneath a building is overlain by a permeable stratum and is underlain by an impervious rock. If the coefficient of consolidation of clay is the one obtained in (i) and the final settlement is 8 cm: a. How much time will it take for 80% of the total settlement to take place? b. Compute the settlement that would occur in one year. 0.375 0.4 0.425 0.45 0.475 0.5 0.525 0.55 10-1 10° 10² 10¹ Time, min [log-scale] Fig. A. Graph to determine the coefficient of consolidation, cy 10² [8.0%] [8.0%]