Task3 A ten-story building is to be constructed at a site where the water table is at the ground ...
160 Undrained shear strengh versus depth 2. The soil profile beneath a proposed construction site is as follows: Depth (m) 0-2.5 2.5-6.7 6.7-15.1 Soil classification Soft clay (CL) Medium clay (CL) Stiff silty clay (CL) Stiff clay (CL) Undrained Shear Strength, Cu (kPa) 25 30 80 100 15.1-23.0 Develop a plot of allowable downward load capacity versus depth for a 350 mm square concrete pile. Consider pile embedment depth between 3 and 21 m and use a factor of safety...
Help please! Problem 3 A prefabricated concrete pile is to be driven into a dense sand deposit as shown in Figure 3 Determine the following; 1. Ultimate bearing capacity of the pile using Meyerhof and NORDLUND method. 2. Using Driven sofiware, calculate the capacity of the pile. (Attach report from the software). 3. At this same soil profile, compare the ultimate capacity of different piles (high displacement and low displacement) and comment based on your results. You should present the...
A 500 mm diameter and 20 m long concrete pile is driven into the ground. The soil profile at the site consists of 5.0 m of sand ( 35 and y- 19.0 kN/m) at the top, underlain by a thick layer of clay (c,- 50 kPa and y- 19.0 kN/m). Determine the maximum load that can be allowed on the pile with a safety factor of 2.5 Assuming an average Young's modulus of 35 MPa and Poisson's ratio of 0.2...
In piling technology, explain the difference between a “displacement pile” and a “non-displacement pile”.(4marks) (b)Using graph paper, sketch 3 curves illustrating typical trends of variation of pile head resistance, shaft resistance and base resistance with increasing settlement, as expected from load testing a CFA pile in clay. Explain the differences between the three curves.(6 marks)(c)A bored cast in-situ pile of 0.6 m diameter by 10 m long is installed through a 6 m thick layer of stiff clay overlying a...
6. (a) In piling technology, explain the difference between a "displacement pile" and (2 marks) a "non-displacement pile". (b) Using graph paper, sketch 3 curves illustrating typical trends of variation of pile head resistance, shaft resistance and base resistance with increasing settlement, as expected from load testing a CFA pile in clay. Explain the differences between the three curves (6 marks) (c) A bored cast in-situ pile of 0.6 m diameter by 10 m long is installed through a 6...
Please solve as fast as possible 1. Using the attached borehole data and the table given below, estimate: a) The point bearing of pile, Q. by using Meyerhof's method b) The skin resistance of pile by using: a mehod , method c) The allowable pile capacity, Qall. Use FS= 3 d) The magnitude of Q, and Q, by using Ngo and the Meyerhof's equation. Calculate the allowable pile capacity. Use FS-3. If you think anything is missing, please make your...
[Problems 1-4] The soil profile at a site for a proposed office building consists of a layer of fine sand 10.4 m thick above a layer of soft, normally consolidated clay 2 m thick. Below the soft clay is a deposit of coarse sand. The groundwater table was observed at 3 m below ground level. The void ratio of the sand is 0.76, and the water content of the clay is 43%. The building will impose a vertical stress increase...
3. Shear Strength a. Plot the effective stress Mohr-Coulomb failure envelope for a soil with c'-500 b. A plane through a sample of this soil has an effective normal stress of c. Use a Mohr circle that touches the failure enve psf and 32 deg. acting on it. What is the shear strength of the soil on that plane? of 2000 psf to estimate the values of σ, and σ, at a state of shear failure 2000 psf lope at...
Q1 (10 marks) You have been asked to examine the bearing capacity of several different rectangular pad footings. The width of each of the footings is to remain constant wil vary. In order to reduce the number of calculations, you have decided to plot the ultimate bearing capacity against the length of the footing. The properties of the underlying soil profile are given in Table 1.1. The base of the footing is to be located 1 m below ground level...
load transferred directly by compression to piles over shaded area Question 2 A pile group of five identical hollow steel piles is designed to support a tower. The arrangement is as shown. Ra = 0.25, D=0.7m, L = 8m. The soil consists of two layers, first being a sand layer with following results: r.c. column 0.5 0.8 1.2 1.6 2.0 Depth (m) N-Value 8 10 11 12 15 L 40N Fs = 2 Nave L for <10 D L for...