8765: civil engineers determine the appropriate depth of foundation for a building? Explain the concept of soil bearing capacity and its significance in foundation design. What factors influence the choice between shallow and deep foundations? Describe the process of soil stabilization and its importance in construction projects. How do civil engineers assess the risk of liquefaction in areas prone to earthquakes? Discuss the principles behind retaining wall design and their role in preventing soil erosion. Explain the concept of compaction in soil mechanics and its implications for construction quality control."

Why the bearing capacity of soil reduces when the groundwater table rises up to the ground surface? point: a) Because the effective unit weight. of the soil below the footing will reduce by almost half. b) Because the effective stress at the level of the base of foundation will reduce significantly. c) Both a and b. d) Because groundwater produces seepage.

After the soil samples are taken and the soil properties determined, the engineer must design the foundation. It typically takes the engineer 4.75 days to design a foundation with a standard deviation of 0.83 days. Use this information and the information provided in Problem I to answer the following questions: a. What is the probability of completing all of the work (field sampling, testing, and design) within 43.5 days? b. The engineer completes the field sampling and testing in 36 days. What duration of the design work should be planned in order to ensure with 85% confidence that all of all of the work will be completed within 43.5 days?

Question 6 To ensure stability, foundations must provide an adequate factor of safety against shear or bearing failure of the underlying soil and the structure must be capable of withstanding the settlements that will result, in particular the differential settlements. In the diagram below, the failure area in the soil under the foundation are divided into three major zones. Discuss those zones Df 45 - 012 3 CD 2 Pp BM W d Q Pp C 2 45 - 012 3

7. What is the liquefaction of foundation soil? What are the hazards?

Laboratory tests provide data from which soil can be classified and prediction made of their behaviour under foundation loading. From laboratory test information, methods of treating soils can be devised to overcome difficulties in excavations, especially in dealing with ground water problems. Discuss the following methods carried out on a major construction site: (i) Visual examination (ii) Natural moisture content (iii) Liquid and plastic limits (iv) Particle-size distribution (v) Unconfined compression (vi) Triaxial compression

Analyse how site conditions impact on the design of foundations.

A foundation 15 ft x 20 ft is proposed near an existing one, 10 ft x 15 ft as shown in the figure below. Determine the following: (A) The vertical total stress increase at A, B, and C at a depth of 4 ft below the ground surface of the existing foundation before construction of the proposed foundation.(B) The vertical total stress increase at A, B, and C at a depth of 4 ft below the ground surface of the existing foundation from the construction of the proposed foundation.

a) What are the functions and functional requirements of foundations and slabs? b) With aid of well labelled diagrams, explain the classifications and the types of foundations? c) Settlement and Geotechnical studies of foundations and slabs. d) What are the preparations and placement of foundations e) What are the choice of selection of foundation f) What are the preparations and placement of slabs

What are Solution Methods available in geotechnical or foundation engineering ?