3102ENG: Geotechnical Engineering - Soil Investigation - Report Writing Engineering Assignment Help

Assignment Task:

1) Background information and available data 

For this assignment, you are required to assess the general project information and the specific geotechnical data provided. Topics covered in this assignment include: 

(i) Interpretation of Northgate (South-east Queensland) geology

(ii) Soil Investigation (S.I.)

(iii) Bearing capacity and design of shallow foundations

(iv) Lateral earth pressures and design of retaining walls 

A schematic development (fictitious; not real) layout plan (see Figure 1), South-east Queensland geological maps for navigation experience only (http://tinyurl.com/y3977l7r) and borelogs (for use in this Assignment) (see Appendix) are provided to assist you with the project. 

2) Project brief 

The development project involves the design and construction of a 6-storey building to be supported on shallow foundations with a 6 m deep basement for underground carpark. The footprint of the site is about 320 m2. On the north and south of the site are a river and a hill, respectively. To the east and west of the site are existing commercial buildings supported on individual pad footings. You are tasked to write a Geotechnical Interpretative Report (GIR) to demonstrate your technical appreciation of the project. 

3) Technical deliverables [90 marks] 

As a geotechnical engineer, you are required by your Client to: 

(i) [15%] Identify, explain and discuss the implications of the Northgate geology on the construction site 

(ii) [15%] Evaluate, justify and interpret the information contained in the Site Investigation information (Appendix) with regards to the ground conditions encountered 

(iii) [10%] Develop an appropriately scaled and informative geological profile (cross-section) for Section D-D based on Borehole GA2 and GA4 for the site. Label the different soil layers clearly. Identify and classify each soil layer including the bedrock. Provide a legend. 

(iv) [20%] Conceptually (without embarking on any detailed calculations) assess, justify qualitatively and evaluate the suitability of your interpreted ground conditions for: a. bearing capacity for the design and construction of shallow foundations b. lateral earth pressure for the design and construction of a 6m deep basement carpark 

(v) [30%] Highlight (with aid of schematics etc.) and discuss the possible design considerations, construction challenges and how to overcome the geotechnical issues related to the project due to the presence of the nearby:

a. stream

b. hill

c. existing buildings

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