The results of a CPT test performed for a commercial site are presented in the image (You already classified the soil layer in homework #2). The layer soil type is shown by the legend and corresponding numbers in the figure. A strip footing with a size of 3x30 is built on the surface of the mentioned strata. A 300 kN/m load is acting on the footing. Use Schmertmann's method to compute the settlement of this footing 1 year after construction and 30 years after construction. Please show your calculation for at least one layer if you want use excel software for this problem. For easier calculation use E, = 3 qc- • • Neglect the foundation weight. • Assume the layers are in dry condition. • Use unit weight as table below. Layer Unit woght

The results of a CPT test performed for a commercial site are presented in the image (You already classified the soil layer in homework #2). The layer soil type is shown by the legend and corresponding numbers in the figure. A strip footing with a size of 3x30 is built on the surface of the mentioned strata. A 300 kN/m load is acting on the footing. Use Schmertmann's method to compute the settlement of this footing 1 year after construction and 30 years after construction. Please show your calculation for at least one layer if you want use excel software for this problem. For easier calculation use E, = 3 qc- • • Neglect the foundation weight. • Assume the layers are in dry condition. • Use unit weight as table below. Layer Unit woght

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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Foundation construction

Question

The results of a CPT test performed for a commercial site are presented in the image (You already
classified the soil layer in homework #2). The layer soil type is shown by the legend and
corresponding numbers in the figure.
A strip footing with a size of 3x30 is built on the surface of the mentioned strata. A 300 kN/m
load is acting on the footing. Use Schmertmann's method to compute the settlement of this
footing 1 year after construction and 30 years after construction. Please show your calculation
for at least one layer if you want use excel software for this problem.
For easier calculation use E₂ = 39c-
•
• Neglect the foundation weight.
• Assume the layers are in dry condition.
Use unit weight as table below.
Layer
No.
1
2
3
4
5
6
7
Unit
weght
kN/m3
17
17
19
18
18.5
18
18

0
Depth Iml
A
10
12
E¹
16
1.8
20
22
24
26
28
30
37
Cone Resistance, qc.qt (MPa)
0
10
20
30
Depth (ml
0
b
8
10
16
18
20
N
22
2
26
28
30
32
0
Slope Friction, fs Pal
50 100 150 200
Savo
Depth (m)
0
9
A
18
18
22
24
26
28
30
2
Friction Rat
0
5
1 Sansitive Fincan
2 Organic Sex-Clay
3 Clay-Slity Clay to Clay
10
Depth Iml
400 0 400 800 1200 1000
C
9
3
S
n
20
22
24
B
Pore Pressure, 2 kal
23
4 Silt Mures Clayey Silt to Sitry Clay
5 Sand Mixtures-Silly Sand to Sandy S
& Sands Clean Sand to Slity Sand
ATTRAENT
-
NNNNNO
22223
Soil Type
-w:
6
- O
7 Gravelly Sand to Dense Sand
8 Very Staff Sand to Clayey Sand
9 Very Stiff Fine Grained
6
in
5
6
56
3

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