Determine the settlement of the pipe at points x

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Reference no: EM131673844

Individual Projects

For each project the aims are

- to show the effect that the sub-layer thickness has on the calculation of the settlement
- to determine the maximum differential settlement under the foundation
- to discuss the accuracy of the settlement calculations

To determine the initial void ratio assume Gs = 2.65. Assume also that settlements of any sand and gravel layers can be ignored

A. A square building (15 m x 15 m in plan) is to be constructed on a site where the soil profile consists of 3 m of clay with an over-consolidation ratio of 5 overlying a 5 m thick layer with an over-consolidation ratio of 1, which overlies rock. The soil properties are Cc = 0.35, Cr = 0.07 and γsat = 20 kN/m3 for both clays, and the water table is 1 m below the soil surface. Determine the settlements when a stress of 100 kPa is applied by the building.

B. A building is to be constructed with a ring beam foundation on a site where the soil profile consists of 3 m of dense sand overlying a 5 m thick layer with an over-consolidation ratio of 1, which overlies rock. The soil properties of the clay are Cc = 0.25, Cr = 0.05, γsat = 18 kN/m3, for the sand γsat = 18 kN/m3, and the water table is 2 m below the soil surface. Determine the settlements when a stress of 100 kPa is applied by the building. Determine the differential settlement between the centre line of the ring beam and under the centre of loaded area of the beam. The inner and outer radii of the ring beam are 8 m and 12 m respectively

C. A rectangular building is to be constructed on a site where the soil profile consists of 5m of clay with an over-consolidation ratio varying linearly from 2 at the surface to 1 at 5 m, overlying a 7 m thick layer with an over-consolidation ratio of 2, which overlies rock. The soil properties are Cc = 0.3, Cr = 0.08 and γsat = 20 kN/m3 for both clays, and the water table is 1 m below the soil surface. Determine the settlements when a stress of 125 kPa is applied by the building over an area of 12 m × 7 m on the soil surface.

D. Figure 1a shows the elevation of a site where a building applying a uniform stress of 100 kPa over a 12 m square foundation is to be demolished. An old brittle pipe carrying critical infrastructure lies 4 m beneath one edge of the building as shown in the plan view in Figure 1b. The soil profile consists of 2 m of dense gravel with γdry = 17.2 kN/m3 which overlies a 6 m thick clay deposit. The water table is 2 m below the surface, level with the top of the clay layer. The clay layer has properties Cr = 0.04, Cc = 0.4, OCR = 1, γsat = 17.75 kN/m3. The clay is underlain by impermeable rigid rock.

Determine the settlement of the pipe at points X and Y when the building is demolished and the stress of 100 kPa is removed. It may be assumed that the pipe moves with the surrounding soil.

1267_SOIL MECHANICS.jpg

E. A circular grain silo is to be constructed on a site where the soil profile consists of 20m of clay overlying rock. The over-consolidation ratio varies linearly from 5 at the surface to 1 at the base of the clay layer. The clay properties are Cc = 0.25, Cr = 0.04 and γsat = 18.5 kN/m3, and the water table is 1.5 m below the soil surface. Determine the settlements when a stress of 150 kPa is applied by the tank which is 12 m in diameter.

Attachment:- Assignment.pdf

Reference no: EM131673844

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Reviews

len1673844

10/10/2017 5:25:03 AM

An individual report (hard copy) is required describing the results of your analyses. The report should be no more than 2 pages. It should contain a brief statement of the problem, present the key results (that is the effect of sub-layer thickness on settlement and differential settlement), and discuss these making reference to 1-D settlement theory. For each project the aims are • to show the effect that the sub-layer thickness has on the calculation of the settlement • to determine the maximum differential settlement under the foundation • to discuss the accuracy of the settlement calculations the question to be solved is To determine the initial void ratio assume Gs = 2.65. Assume also that settlements of any sand and gravel layers can be ignored... A rectangular building is to be constructed on a site where the soil profile consists of 5m of clay with an over-consolidation ratio varying linearly from 2 at the surface to 1 at 5 m, overlying a 7 m thick layer with an over-consolidation ratio of 2, which overlies rock. The soil properties are Cc = 0.3, Cr = 0.08 and ?sat = 20 kN/m3 for both clays, and the water table is 1 m below the soil surface.

len1673844

10/10/2017 5:24:41 AM

Detailed Question: so I am done with first part of the assignment that is part 1 I only need help for part 2. In part two a report is to be written by analysing the question given and I am assigned to question C. All the points to be mentioned in the file attached below and after I get the quote I wanna explain the person working on the assignment in detail please share these details with the expert. I will be needing A concise, well presented report including relevant graphs and discussion showing a full understanding of the problem and the analyses format for the report;- there has to be a 1.topic 2. abstract 3.introduction 4.results 5.discussion ( in this part note that it should have assumption made in the settlement theory included) 6.conclusion 7.reference also try to include the graph and data

len1673844

10/10/2017 5:23:38 AM

HD A concise, well presented report including relevant graphs and discussion showing a full understanding of the problem and your analyses D A good report including relevant graphs and discussion showing understanding of the problem and your analyses CR A report including relevant graphs and discussion showing broad understanding of the problem and your analyses but not of the detail P Poorly presented report but includes relevant graphs and discussion/ well presented report with rudimentary level of understanding

len1673844

10/10/2017 5:23:31 AM

Assessment will be 50% on the spreadsheet and 50% on its application and the report. The following criteria will be applied 1. Spreadsheet 100% General spreadsheet able to correctly solve settlement problems with a range of foundation shapes and loads as specified in self-explanatory input data. The spreadsheet will make use of macros and some visual basic programming HD General spreadsheet able to solve all individual problems and handle a range of foundation shapes and loads. The program will make use of macros, but may require some manual adjustment of the spreadsheet to cope with different foundation shapes and load histories. D Spreadsheet able to solve all problems and handle the range of boundary conditions and load histories, but requiring manual adjustment of spreadsheet to cope with different foundation shapes and loads. Limited use of macros to automate the spreadsheet.

len1673844

10/10/2017 5:23:22 AM

2. The spreadsheet will be used to solve a particular geotechnical problem (A to E below). Each student in the group will have a different problem. An individual report (hard copy) is required describing the results of your analyses. The report should be no more than 2 pages. It should contain a brief statement of the problem, present the key results (that is the effect of sub-layer thickness on settlement and differential settlement), and discuss these making reference to 1-D settlement theory. The report is due before midnight Sunday 15th.

len1673844

10/10/2017 5:23:15 AM

1. Each tutorial group (see list below) is required to produce a spreadsheet that can use the method described in the notes to solve problems involving 1-D settlement calculation. This will be due before 9am Monday 9th October. For part 1 of this assignment a single electronic submission is required from each tutorial group (see list below). This may consist of several individual spreadsheets or a single group spreadsheet. This submission requirement is to encourage you to work cooperatively in your groups, however, if you wish to work individually, and submit an individual spreadsheet that is also acceptable. It is acceptable for every student in one group to have the same spreadsheet, but similar spreadsheets across more than one group will be considered to exceed the bounds of acceptable cooperation and will be penalised accordingly.

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