CIVE 354 Geotechnical Engineering II
Assignment 5
Due date: 5 pm - Monday - November 3rd 2014
1. The square footing (3m by 3m) shown below is to be installed 1.0m below ground surface in a fairly
dense sand ( is estimated to be 35o). The water table is 3.
CIVE 354
Geotechnical Engineering II
Assignment 1 SOLUTIONS
1.
Vt = 93 cm3
mt = 181 g
md = 160 g
Gs = 2.65
a) Total unit weight
= 19.093 KN/m3
b) Dry unit weight (
= 16.887 KN/m3
c) water content
= 0.131 = 13.1 %
d) void ratio (e)
So
= 0.54
e) degree of s
CivE 354
Geotechnical Engineering II
Assignment 1 Review
(Fall 2014)
1. In a natural state a moist soil sample has a volume of 93 cm3 and a mass of 181 g. The oven
dried mass of the soil is 160 g. If the specific gravity of soil solids is Gs = 2.65, calcu
CIVE 354 Geotechnical Engineering II
Assignment 2
Due date: 5 pm - Monday - September 29th 2014
1. Find the magnitude and location of the active horizontal forces (soil and water) acting on the
retaining wall shown below.
2. Using Mohr circles and the Moh
CIVE 354 Geotechnical Engineering II
Assignment 3
Due date: 5 pm - Monday October 6th 2014
1. Derive Ka and Kp expressions using the Mohrs circle and find the direction of the failure
plains for the active and passive conditions.
2. Calculate the forces a
CIVE 354
Geotechnical Engineering II
Assignment 9 - Solutions
Question 1)
Question 1) b)
Question 2)
Similar to Example 4.2 in the notes
Question 3) a) Short-term condition
Question 3) b) Long-term condition
CIVE 354 Geotechnical Engineering II
Assignment 5
Due date: 5 pm - Monday - October 20th 2014
1. Compute the active force for the retaining wall shown below using the Coulomb method for
the wedge with given coordinates.
.
4m
2. For the retaining wall show
CIVE 354 Geotechnical Engineering II
Assignment 6
1) A strip of wall footing of 2 m wide is supported in a uniform deposit of stiff clay. The
groundwater level is below the foundation depth.
a) Calculate the ultimate bearing capacity of this footing.
b) D
CIVE 354 Geotechnical Engineering II
Assignment 8
Due date: 5 pm - Monday - November 10th 2014
1. For the infinite slope shown in Figure 1 calculate the factor of safety against slope failure in sand ( =
33, sat = 21 kN/m3 , = 18 kN/m3) for the following
CIVE 354 Geotechnical Engineering II
Assignment 9
Due date: 5 pm - Monday - November 17th 2014
1. Evaluate the factor of safety for the slope shown in the figure using Taylors method. Also
calculate the factor of safety against sliding for the failure pla
CIVE 354 Geotechnical Engineering II
Assignment 10
Due date: 5 pm - Monday December 1st, 2014
1. a) What are the lateral pressure distributions acting on the sides of a braced excavation when the
supported material is: i) a dry/moist sand; ii) a stiff - f
CIVE 354 - Geotechnical Engineering II
Assignment #11
1) For the clay shown below, find the depth of embedment for the sheetpile.
2) A reinforced earth wall is 5.2 m high. The reinforcing elements, which are spaced
at 0.65 m vertically and 1.20 m horizont
CIVE 354 Geotechnical Engineering II
Assignment 4
Due date: 5 pm - Tuesday - October 14th 2014
Assume: conc = 23.6 kN/m3 and = 25
1. A 5 meter high retaining wall retains a sandy backfill; internal friction angle = 30 and unit
weight = 19.5 kN/m3. wall he