Geomechanics
A 50-storey concrete building was constructed on a normally consolidated clay layer, which has a layer thickness of 5 m. The building foundation increased the vertical effective stress at midpoint of the clay layer from 70 kPa to 220 kPa (final increase). The coefficient of volume of compressibility (mv) of the clay in this stress range was determined to be 5×10-4 kPa-1 . What would be the long-term settlement of the building foundation due to the primary consolidation of the clay layer?
Homework Answers
Request Answer!
We need at least 9 more requests to produce the answer.
1 / 10 have requested this problem solution
The more requests, the faster the answer.
A new foundation will be built on a 2.5m thick clay layer. The current effective stress in the middle of the clay layer was found to be 200 kPa. During construction, the foundation area will be h...
A new foundation will be built on a 2.5m thick clay layer. The current effective stress in the middle of the clay layer was found to be 200 kPa. During construction, the foundation area will be heavily loaded with the structure and equipment so that effective stress at the middle of the clay layer will be increased to 800 kPa. After construction is completed, which will take 5 years, the equipment will be removed and the final effective stress in...
For a normally consolidated clay layer, given: Thickness-3.7 m Void ratio- 0.82 Liquid limit 42 Average...
For a normally consolidated clay layer, given: Thickness-3.7 m Void ratio- 0.82 Liquid limit 42 Average effective stress on the clay layer 110 kN/m2 How much consolidation settlement would the clay undergo if the average effective stress on the clay layer is increased to 155 kN/m as the result of the construction of a foundation?
[Problems 1-4] The soil profile at a site for a proposed office building consists of a...
[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...
Please, detailed solution. Also state the formulas and the parameters you are using. Thanks A vertical...
Please, detailed solution. Also state the formulas and the
parameters you are using. Thanks
A vertical section through a average modulus of volume compressibility of the c building foundation at a s ite is shown in Figure 5. The clay is m, 5 x 10 m2/kN a) Calculate the effective initial vertical stresses within the clay layer a t depths 2, 4, 6, 8, and 10 load is applied; and m below ground surface, immediately after the 200 kPa b)...
3. A soil profile shown below. The uniformly distributed load on the ground surface is Do....
3. A soil profile shown below. The uniformly distributed load on the ground surface is Do. Estimate the primary settlement of the normally consolidated clay layer, given that H-6ft, H2 - 10 ft, Hz - 4ft For sand, Ydry = 113 lb/ft'Ysat = 188.7 lb/ft? For clay, Ysat - 186.4 lb/ft. e=0.85, LL = 55 Ao'-2,000 lb/ft? -0.0003 in /sec 140' Dry sand Satiiruted sand Primary Settlement, Sc of Normally Consolidated clay - If the clay above was overconsolidated, what...
I want solution! 3. A laboratory consolidation test was conducted on a specimen collected form the...
I want solution!
3. A laboratory consolidation test was conducted on a specimen collected form the middle of the overconsolidated clay layer and the field consolidation curve is given below. The effective overburden pressure was 40.95 kN/m²at the middle of the clay layer. Calculate a) the recompression index, b) the compression index, and c) the consolidation settlement when the average vertical stress increment at the middle of the clay layer is 50kN/m² due to a foundation load. The thickness of...
Figure P3 shows the soil profile at a site for a proposed office building. It is...
Figure P3 shows the soil profile at a site for a proposed office building. It is expected that the vertical stress at the top of the clay will increase by 150 kPa and at the bottom by 90 kPa. Assurning a linear stress distribution within the clay: (a) Calculate the consolidation settlement. You should divide the clay into five layers, compute the settlement for each layer, and then find the total settlement. Assume G = 2.7 for both sand and...
settlement calculation confused as how the settlement per soil layer was obtained in mm, not getting the unit conversi...
settlement calculation
confused as how the settlement per soil layer was obtained in
mm, not getting the unit conversion right. For example, when I
apply for formula s for first layer I obtain s=97.6 but the answer
is 9.76
mv= 0.8 m^2/MN
ness Terzaghi's method S- depth below L'/z foundation 9.8 61 0.24 5 6.6 4.2 2 41 0.16 0.101 1.67 0.67 2 26 18 0.4 5 2.9 2 0.29 0.22 0.069 0.71 0.56 1.9 12 0.045 25.4 It is...
please show step by step (also show how to find the vertical stress increase) 18 A...
please show step by step (also show how to find the vertical stress
increase)
18 A new petroleum storage tank is proposed at an oil refinery to be supported by a 20-meter diameter slab foundation at the ground surface. The structure will produce a uniform load of 110 kN/m2 on the entire slab foundation. A subsurface investigation has revealed the shown soil profile. A series of laboratory tests on representative samples obtained from the clay stratum has resulted in the...
g=9.81m/s^2 When it say "preconsolidated under vertical effective stress of 130 kPa", this means that the...
g=9.81m/s^2
When it say "preconsolidated under vertical effective stress of
130 kPa", this means that the preconsolidation pressure at the
centre of the clay layer is 130 kPa, NOT that 130 kPa was applied
as a surcharge at the surface.
In the following questions, you do not need to divide the clay layer into multiple layers to calculate the consolidation settlement. Asume the clay to be only one layer q 50 kN/m2 3.0 m dry WT Sand: Ysat 1k -17...
A new foundation will be built on a 2.5m thick clay layer. The current effective stress in the middle of the clay layer was found to be 200 kPa. During construction, the foundation area will be heavily loaded with the structure and equipment so that effective stress at the middle of the clay layer will be increased to 800 kPa. After construction is completed, which will take 5 years, the equipment will be removed and the final effective stress in...
For a normally consolidated clay layer, given: Thickness-3.7 m Void ratio- 0.82 Liquid limit 42 Average effective stress on the clay layer 110 kN/m2 How much consolidation settlement would the clay undergo if the average effective stress on the clay layer is increased to 155 kN/m as the result of the construction of a foundation?
[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...
Please, detailed solution. Also state the formulas and the
parameters you are using. Thanks
A vertical section through a average modulus of volume compressibility of the c building foundation at a s ite is shown in Figure 5. The clay is m, 5 x 10 m2/kN a) Calculate the effective initial vertical stresses within the clay layer a t depths 2, 4, 6, 8, and 10 load is applied; and m below ground surface, immediately after the 200 kPa b)...
3. A soil profile shown below. The uniformly distributed load on the ground surface is Do. Estimate the primary settlement of the normally consolidated clay layer, given that H-6ft, H2 - 10 ft, Hz - 4ft For sand, Ydry = 113 lb/ft'Ysat = 188.7 lb/ft? For clay, Ysat - 186.4 lb/ft. e=0.85, LL = 55 Ao'-2,000 lb/ft? -0.0003 in /sec 140' Dry sand Satiiruted sand Primary Settlement, Sc of Normally Consolidated clay - If the clay above was overconsolidated, what...
I want solution!
3. A laboratory consolidation test was conducted on a specimen collected form the middle of the overconsolidated clay layer and the field consolidation curve is given below. The effective overburden pressure was 40.95 kN/m²at the middle of the clay layer. Calculate a) the recompression index, b) the compression index, and c) the consolidation settlement when the average vertical stress increment at the middle of the clay layer is 50kN/m² due to a foundation load. The thickness of...
Figure P3 shows the soil profile at a site for a proposed office building. It is expected that the vertical stress at the top of the clay will increase by 150 kPa and at the bottom by 90 kPa. Assurning a linear stress distribution within the clay: (a) Calculate the consolidation settlement. You should divide the clay into five layers, compute the settlement for each layer, and then find the total settlement. Assume G = 2.7 for both sand and...
settlement calculation
confused as how the settlement per soil layer was obtained in
mm, not getting the unit conversion right. For example, when I
apply for formula s for first layer I obtain s=97.6 but the answer
is 9.76
mv= 0.8 m^2/MN
ness Terzaghi's method S- depth below L'/z foundation 9.8 61 0.24 5 6.6 4.2 2 41 0.16 0.101 1.67 0.67 2 26 18 0.4 5 2.9 2 0.29 0.22 0.069 0.71 0.56 1.9 12 0.045 25.4 It is...
please show step by step (also show how to find the vertical stress
increase)
18 A new petroleum storage tank is proposed at an oil refinery to be supported by a 20-meter diameter slab foundation at the ground surface. The structure will produce a uniform load of 110 kN/m2 on the entire slab foundation. A subsurface investigation has revealed the shown soil profile. A series of laboratory tests on representative samples obtained from the clay stratum has resulted in the...
g=9.81m/s^2
When it say "preconsolidated under vertical effective stress of
130 kPa", this means that the preconsolidation pressure at the
centre of the clay layer is 130 kPa, NOT that 130 kPa was applied
as a surcharge at the surface.
In the following questions, you do not need to divide the clay layer into multiple layers to calculate the consolidation settlement. Asume the clay to be only one layer q 50 kN/m2 3.0 m dry WT Sand: Ysat 1k -17...
Most questions answered within 3 hours.
-
1. Which of the following is NOT an argument that McMahan uses
to show that jus...
asked 16 minutes ago -
A crate slides up a frictionless slope. At the end of 3 seconds
its velocity is...
asked 33 minutes ago -
Use the following information to answer the next seven
questions.
Suppose there are three potential states...
asked 29 minutes ago -
If we only have interstitial and substitutional diffusion, then
what do we consider the process of...
asked 45 minutes ago -
You look at yourself in a shiny 9.6-cm-diameter Christmas tree
ball.
If your face is 21.0...
asked 47 minutes ago -
If we were to measure the relaxation time of a muscle after
undergoing tetanus compared to...
asked 46 minutes ago -
4CO(g) + 8H2(g) -----> 3CH4(g) +
CO2(g) + 2H2O(l)
Use the following data as needed to...
asked 49 minutes ago -
without using map
1. Write a C++ program to find out the top 10 words in...
asked 1 hour ago -
1)Calculate the percent ionization of a
0.330 M solution of hypochlorous
acid.
% Ionization = %...
asked 1 hour ago -
1a) How many grams of K2SO4 are in 250mL
of 0.11 M K2SO4 solution?
_____ g...
asked 56 minutes ago -
The vapor pressure of a solution containing 38.7 g glycerin
(C3H8O3) in 146.2 g ethanol (C2H5OH)...
asked 1 hour ago -
A physics major is cooking breakfast when he notices that the
frictional force between the steel...
asked 1 hour ago