Question

2. Use Figure 1 and Table 1 for the following a) Compute the vertical effective stress (o) in kN/m2 at the center of the clay layer prior to the construction of the footing. [Note: To compute c., you will first have to use the weight-volume relationships to compute the unit weight of the clay.] b) Assuming B 15 m, L 2.5 m, and Q-120 kN, use the Boussinesq procedure to determine increase in the vertical stress (Ao) in kN/m2 at the center of the clay layer below the center of the footing. c) Assuming the values that you computed in (a) and (b) are representative for the e primary consolidation entire thickness of the c settlement (AHinal) in mm that will occur in the clay layer from placement of the footing. Use the empirical relation: Cc-0.009x(LL%-10) to estimate the compression index. lay layer, calcula te the ultimat d) A consolidation test was performed on a 25 mm thick, undisturbed sample taken gauge readings obtained from the center of the clay layer. The time and dial from an increase in pressure on the specimen from 50 to 100 kN/m2 are given in Table 1. Use the "logarithm of time" method (i.e., Casagrande procedure) to determine the coefficient of consolidation (c) in mm2/min. e) Using Terzaghi's 1D consolidation theorem, calculate and plot the predicted settlement of the footing as a function of time (i.e., ΔΗ(t) vs. time), where ΔΗ(t) is in mm and time is in days. [Compute ΔΗ(t) at enough times so that you can reasonably construct the requested plot. Also, compute AH(t) for times long enough that ΔΗ¡aal is reached. ] f) Based on the inherent assumptions in Terzaghi's 1D consolidation theorem and those made above versus actual field conditions, would you expect the footing in Figure 1 to settle faster or slower than predicted in (e), why?
Could someone please help with this problem parts a-f

Answer 1

+0.945 di0 ?H final ) = 34. 63 mrn "",""error"":""\r\nWe can not access the URL currently. Please download the content and pass it in.\r\n"",""modified"":1551977062,""source"":""automated""}"