Soil Mechanics and Geotechnical Design | My Assignment Tutor

School of Earth and Environmental Sciences Unit TitleSoil Mechanics and Geotechnical DesignAssignment TitleFoundation Design ReportWord LimitIndicative word count is 3500 excluding figures, tables & calculationsDue DateWednesday 7th June 2021 ( midnight)Submission MethodTurnitin through Moodle Coursework InstructionsIntroductionFoundation engineering is a multi-disciplinary process as it requires a sound understanding of geotechnical engineering, construction processes, soil-structure interaction and, because a foundation element is a structural member, structural engineering; it is therefore a process that tends to involve more than one person.In many cases, the foundation design is developed on the basis of an appreciation of the site geology (ground profile), ground behaviour, the nature and form of the proposed structure and any particular site constraints. Analysis within the design process tends to take the form of a ‘check’ that the proposed foundation design will be acceptable.As an Engineering Geologist, it is the ‘geotechnical engineering’ element of foundation engineering to which you can contribute most because you will have skills in three key areas that are essential (Peck, 1962), namely:a knowledge of precedents (eg. what has worked before?); a sound understanding of geology; and a sound understanding of soil mechanics.The first of these is perhaps the most difficult at this stage, and also the most important and is developed through research (i.e. consulting the literature) and experience.Generally, the foundation design process is both phased and iterative. At an early stage in the project, often before any ground investigation works have been undertaken (therefore based on desk study information), a number of conceptual design options are considered by the designer/engineer, often based on experience of similar projects and similar ground conditions (item (i) above!).At this stage, the designer will need to know what form the structure will take and what loads the foundations will need to support. Some limited analysis will be undertaken at this stage, to check that these concepts are acceptable (i.e. stability and deformation). If these checks show that they are not acceptable, then re-sizing might be undertaken, e.g. pile lengths increased, or pad dimensions increased, and re-analysis carried out. The conceptual designs may well be used to inform ground investigation works, and so factual and interpretive reports will be available to allow conceptual designs to be developed further, informed by greater certainty of the ground profile and ground behaviour at the site.Once technically acceptable foundation options are identified, it is possible then to make financial comparisons between the different options, i.e. costs can be assessed. From this process, as well as consideration of the ‘buildability’ (construction process), an acceptable foundation design could be taken forward to more detailed design allowing construction drawings and specifications to be produced.This report is centred on the ‘conceptual design’ phase outlined above.BackgroundThe proposed site for redevelopment is located in Bracknell Berkshire, and consists of a secondary school teaching block and a sports hall with high and wide spans to accommodate an indoor track and other facilitiesThe location of the structure has not been decided although you might want to suggest positions based on the ground conditions. An initial desk study has been carried out and this is included in the information pack. An intrusive site investigation has been undertaken at this site by SOCOTEC in 2016.A selection of borehole records from this investigation have been made available to you (BH1, BH5, BH8 and BH12), and these records and associated geotechnical testing data are presented in separate files.3.0 Task You are working for a geotechnical consultant employed by the Architect to carry out the geotechnical design elements for the proposed structures. This includes the design of all the main foundation elements to support the proposed structures.You have been asked by your supervising Geotechnical Engineer to provide a check on the design options approved by the Architect for the foundations for the proposed structures. The following options are to be considered:Raft foundation; Pad footings; Pile foundations (assume 450mm pile diameter: singe and pile group options).The Structural Engineer has indicated that the cladding system to be used on the exterior of the structures will be sensitive to distortions caused by differential settlement of the foundation. A serviceability limit state has therefore been defined in terms of the allowable differential settlement between adjacent columns as 20mm.Your task is to compile a foundation design report for the structure.The results of the site investigation have been provided, and the borehole records and the associated laboratory test data and ground water monitoring are located on Moodle.4.0 Report Structure Your coursework should be in the form of a foundation scheme design report and should include the following sections. For the purposes of this task you are not required to carry out a desk study of the site. Your report could be structured as follows:Introduction and Brief Geological setting Ground model (ground profile) Geotechnical model (ground behaviour) Design Philosophy Foundation Design Proposals Conclusions ReferencesFigures – Site Plan Geological Cross Section Plasticity Chart Moisture Content versus Depth SPT N value versus Depth Undrained Shear Strength versus Depth Co-efficient of volume change versus depth Foundation Design Charts (shallow/pile)Appendices Appendix A – Shallow Foundation Design Calculations including settlement analysis Appendix B – Pile Design CalculationsReference should be made to the appropriate British Standards and design guides, where appropriate.All references must be properly cited in the text and listed in accordance with the APA system.The literature is filled with case studies and foundation design and you are expected to have read some of these and referenced them in your report. The report should be succinct and precise, with all figures clearly labelled and indexed.Appropriate word-processing should be used for the report but geological cross sections and graphical plots can be done by hand if necessary.5.0 Word Count and Submission Date You should submit your foundation design report by mid-night on 7th June 2021 through the online Moodle resource Turnitin.The indicative word count is 35,000 excluding figures, tables & calculations. This is only an indicative number you may use more but be sure what you write is concise and succinct.The Marking Scheme for this coursework is below.6.0 Indicative References Fang, H. Y. (2002). Foundation Engineering Handbook (2nd Edition). Dordrecht: Kluwer Academic. Fleming, G. K., Weltman, A. J. and Randolph, M. F. (1992). Piling Engineering (2nd Edition). Halsted Press. Peck, R. B. (1962). Art and science in subsurface engineering. Géotechnique, 12, 60–68. Skempton, A. W. and MacDonald, D. H. (1956). The allowable settlements of buildings. Proceedings of the Institution of Civil Engineers, III(5), 727–768. Tomlinson, M. L. (2001). Foundation Design and Construction (7th Edition). Prentice-Hall. Tomlinson, M. and Woodward, J. (2007). Pile Design and Construction Practice (5th Edition). Taylor & Francis. Marking CriteriaGRADE >70% 60 – 69% 50-59% 40-49% Less than 40% 25% and less % Report and calculation layout. Clarity and accuracy of design calculations. Excellent with few or no errors in organisation, structure, and presentation. Informative well-structured calculations properly referenced – Assumptions well thought out and structured. Very good organisation, structure which is easy to follow and logical. Accurate high standard calculations in a clear concise format. No major errors. Good organisation, structure which is easy to follow and logical. High standard calculations in a clear concise format. No major errors but some minor calculation errors. A satisfactory attempt to follow directions regarding organisation, structure. Accurate calculations well laid-out with some errors in analysis method. A basic attempt to follow directions regarding organisation, structure. Partial production of accurate calculations but difficult to follow logic. Calculations generally complete but with some major errors in application. FAIL None or little attempt to follow directions in terms of organisation and structure. Calculations either non-existent or poorly laid out with major errors apparent. Acutely deficient in all aspects. FAIL 30 Geotechnical Interpretation Comprehensive analysis of the laboratory and in situ results to determine a set of geotechnical parameters used in the design. Parameters have been compared to published values where appropriate and sensible conclusions made as to the validity of design parameters derived. Very good analysis of the laboratory and in situ results to determine a set of geotechnical parameters used in the design. Parameters have been compared to published values where appropriate. A good analysis of the laboratory and in situ results to determine a set of geotechnical parameters used in the design. Parameters have not been compared to published values where appropriate but values are reasonable based on the data provided. A reasonable analysis of the laboratory and in situ results to determine a set of geotechnical parameters used in the design. Parameters have not been compared to published values but values are generally correct. A basic analysis of the laboratory and in situ results to determine a set of geotechnical parameters used in the design. Parameters have not been compared to published values with a number of key parameters not properly derived. FAIL None or little analysis of the laboratory and in situ results to determine a set of geotechnical parameters used in the design. Parameters used for design purposes bear no relation to the test data provided. FAIL 30 Design Solution Syntheses With minimum guidance has synthesised scheme design solutions well beyond lecture content showing an in depth knowledge and research of salient papers. Insight into different design options achieved with pros-cons discussed in detail. Ideas and concepts synthesised into a high quality set of scheme design calculations. Design methods well researched and applied correctly. Some attempt to gain insight into the different foundation options Ideas and concepts synthesised into a set of scheme design calculations. Design methods researched and applied correctly. Some attempt to gain insight into the different foundation options Synthesis of ideas into a coherent scheme design. Appropriate methods of design used. No real attempt to gain insight into possible different foundation options. Partial synthesis of ideas into a coherent scheme design. Some attempt to research design methods but some inappropriate methods used. FAIL None or little synthesis of ideas into a coherent scheme design. No attempt made to obtain and read published literature on foundation design methods. FAIL 40

QUALITY: 100% ORIGINAL PAPER – NO PLAGIARISM – CUSTOM PAPER

Leave a Reply

Your email address will not be published. Required fields are marked *