This is geotechnical project. should have to use plaxis software definitely. Document Preview: Project 2. Using PVDs to improve the properties of soft soil ENG 7308 Due date: 17 Oct (week 12) by 9 pm (submit your report to the library). Weighting 20%. Learning objectives: This activity will provide students with opportunities to develop critical skills necessary to correctly interpret and analyse results of field investigations, critically evaluate the stability of embankments and design appropriate methods of embankment stabilization, and develop skills needed to produce comprehensive and concise reports. Group A: If your family name starts with a letter from A to G. Introduction A residential canal was proposed at the Merrimac site of Broadlakes Development. A geotechnical investigation revealed the presence of a layer of soft clay (Alluvium) that could cause problems in the form of large settlements during construction. To consolidate this soil prior to construction, soil improvement methods such as a) preloading, and b) preloading with prefabricated vertical drains (PVDs) were proposed. You are required to estimate the settlements and time of consolidation for each method. Data from geotechnical investigation The following data from field investigation and laboratory tests are provided (see the attached PDF-file): Map (Location of boreholes) Engineering logs of boreholes (Boreholes 6, 7 and 10) Properties of soils to use in your Plaxis model (Table 1) Your task 1) Interpret the results of site investigation and draw a geological cross-section through BH 6, 7, and 10. 2) Estimate settlements and rate of consolidation for Method 1 and Method 2 (see below for details) using Plaxis. Method 1 (Preloading without PVDs) Step 1. Place 3 m high preload of sand fill (with a unit weigh of 20 kN/m3) on the topsoil in the middle of the studied area (around BH7). The size of the embankment is given in Fig. 1. Step 2. Allow the layer of Alluvium to achieve 90% degree of consolidation. Step 3. Place additional 2 m fill. Record the time Attachments: geo-tc.doc