U. I uie poItG IS TOCHtuu ar ne mauie or rie soIr rayer, uieT WriatIs uieeffective stress at C?Ans.: (a) i= 0.336, (b) q = 0.0187 m'/min5.18 A cut is made in a stiff, saturated clay that is underlain by a layer of sand.What should be theheight of the water,h, in the cut so thatYat =19 kN/mH-Smthe stability of thesaturated clay is not4.5 mlost?Saturated clayAns.: (a) h = 0.63SandTat - 18 kN/mCivil Eng Dept. College of EngSoil MechanicsAssistant Prof. Dr. Ahmed Al-Obaidi(174)5.19 Refer to figure. Given: H = 6 m. D= 3 m, H = 1.5 m. D = 6 m, draw aflow net, Calculate the seepage lossper meter length of the sheet pile (atSheet pile 5.26 The section through sheet pile isshown in Figure, the coefficient of AVApermeability of the soil is 2.0 x 10-6 m/s. Draw the flow net anddetermine the quantity of seepage.3.00 m3.00 mAns.: N = 4.2, Na = 9, q = 4.7*10 m'/sec/m3.50 mameo5.27 The dam shown in Figure is located on the anisotropic soil. Thecoefficients of permeability in the x and z directions are 5 107 and 1.8*10m/s, respectively. Determine the quantity of seepage under the dam.Ans.: N = 3.25, Na = 12, q = 1.1*10* m/sec/m15.00 m1.00 m3.00 m8.00 m33.00 m-8.00 mCivil Eng Dept. - College of EngSoil MechanicsAssistant Prof. Dr. Ahmed Al-Obaidi4119立

To find the height of the water (hw) -

5.18 A cut is made in a stiff, saturated clay that is underlain by a layer of sand. What should be the Yat =19 kN/m height of the water, h, in the cut so that H Sm the stability of the saturated clay is not 4.5 m lost? Saturated clay Ans.: (a) h = 0.63 Sand at= 18 kN/m

5.18 A cut is made in a stiff, saturated clay that is underlain by a layer of sand. What should be the Yat =19 kN/m height of the water, h, in the cut so that H Sm the stability of the saturated clay is not 4.5 m lost? Saturated clay Ans.: (a) h = 0.63 Sand at= 18 kN/m

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Calculation of Settlement

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of the soil on which the foundation is laid. The effect of the settlement depends on the magnitude of settlement, uniformity, and the structural design of the structure. The maximum allowable settlement for residential and office buildings should be less than 18 mm, for industrial buildings, it is 38 mm and for commercial buildings, it is 25 mm.

Question

100%

U. I uie poItG IS TOCHtuu ar ne mauie or rie soIr rayer, uieT WriatIs uie
effective stress at C?
Ans.: (a) i= 0.336, (b) q = 0.0187 m'/min
5.18 A cut is made in a stiff, saturated clay that is underlain by a layer of sand.
What should be the
height of the water,
h, in the cut so that
Yat =19 kN/m
H-Sm
the stability of the
saturated clay is not
4.5 m
lost?
Saturated clay
Ans.: (a) h = 0.63
Sand
Tat - 18 kN/m
Civil Eng Dept. College of Eng
Soil Mechanics
Assistant Prof. Dr. Ahmed Al-Obaidi
(174)
5.19 Refer to figure. Given: H = 6 m. D
= 3 m, H = 1.5 m. D = 6 m, draw a
flow net, Calculate the seepage loss
per meter length of the sheet pile (at
Sheet pile

5.26 The section through sheet pile is
shown in Figure, the coefficient of AVA
permeability of the soil is 2.0 x 10-
6 m/s. Draw the flow net and
determine the quantity of seepage.
3.00 m
3.00 m
Ans.: N = 4.2, Na = 9, q = 4.7*10 m'/sec/m
3.50 m
ameo
5.27 The dam shown in Figure is located on the anisotropic soil. The
coefficients of permeability in the x and z directions are 5 107 and 1.8*10
m/s, respectively. Determine the quantity of seepage under the dam.
Ans.: N = 3.25, Na = 12, q = 1.1*10* m/sec/m
15.00 m
1.00 m
3.00 m
8.00 m
33.00 m-
8.00 m
Civil Eng Dept. - College of Eng
Soil Mechanics
Assistant Prof. Dr. Ahmed Al-Obaidi
411
9
立

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8. Estimate the settlement of the center of the tank, shown in the sketch, due to consolidation of the 20-ft layer of clay. 80'diam. -Oil tank; 500 lb/sq ft 30' fine sand; 125 lb/cu ft 20'clay; qu = 1.3 tons/sq ft W = 54 % Wp = 26% W = 44% Isat = /15 lb /cu ft %3D Rock %3D %3D
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Question 1 a) Determine the factor of safety, for the short-term condition, of the embankment shown inFigure 1, for the potential failure circle indicated. b) Determine the FS for the embankment given in Figure 2, if the soil used is clay and the embankment is surrounded by water to its crest level. (9.8m 145m £3 m. Bm clay DIT Cu 50 kPa 8=19 k lm3 R=20m 5m 1m Saturarteal clay %3D Figure 2