10.9 A plate loading test was carried out on a medium densesand, using a 300 mm wide square plate, and ko.3 was deter-mined as 100 MN/m³. Determine the coefficient of subgradereaction for a 2.5 m wide square foundation and a 2.5 m X3.5 m rectangular foundation.

Given : A 2.5m×3.5m rectangular foundation a=300mm = 0.3m K0.3=100 MN/m3

A plate loading test was carried out on a medium dense sand, using a 300 mm wide square plate, and koj was deter- mined as 100 MN/m'. Determine the coefficient of subgrade reaction for a 2.5 m wide square foundation and a 2.5 m × 3.5 m rectangular foundation.

A plate loading test was carried out on a medium dense sand, using a 300 mm wide square plate, and koj was deter- mined as 100 MN/m'. Determine the coefficient of subgrade reaction for a 2.5 m wide square foundation and a 2.5 m × 3.5 m rectangular foundation.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter10: Mat Foundations

Section: Chapter Questions

Problem 10.9P: A plate loading test was carried out on a medium dense sand, using a 1 ft wide square plate, and k1...

See similar textbooks

Related questions

Q: The undrained cohesion of a remoulded clay soil is 10 kN/m2. If the sensitivity of the clay is 20,…

A: Given data : Sensitivity of Clay (S)=20Undrained cohesion of remoulded clay (Cu)=10 KN/m2

Q: A 2-m clay layer in the field has a current effective stress, o= 70 kN/m2. There is a net stress…

A: Effective stress - σ'0 = 70 KNm2 Net stress increase = ∆σ = 180 KNm2

Q: A square foundation, 2.5x2.5m in size, supports a column load of 478 kN. The soil characteristics…

A: Note: Since you have posted a question with multiple subparts, we will solve the first three…

Q: A normally consolidated clay layer 3.65 m. thick has a void ratio of 1.09. Liquid limit is equal to…

A: Given a normally consolidated clay layer 3.65m in thickness. It is required to find the…

Q: In a consolidation test, the void ratio of the specimen which was 1.068 under the effective pressure…

Q: A mat foundation is shown in Figure P8.6. The design considerations are L = 12 m, B = 10 m, Df = 2.2…

A: Calculate the initial effective stress at the centre of the clay layer, σ'0 = σo - U…

Q: A 300 mm X 450 mm plate was used in carrying out a plate loading test in a sand, where the plate…

A: Given data- Dimensions of plate = 300mm×450mmWidth of plate (Bp)= 0.300mWidth of foundation (Bf)=…

Q: Question 1) For a shallow foundation measuring (1.7 m × 2.2 m) as shown below: , A. Estimate the…

A: Given: A rectangular footing of dimension 1.7 m x 2.2 m as shown below Required: To determine…

Q: A normally consolidated clay layer 4.91 m. thick has a void ratio of 1.12. Liquid limit is equal to…

Q: An oil storage tank 35min diameter is located 2m below the surface of a deposit of clay 32mthick,…

A: Total settlement: In general, according to the classification of consolidation, the total settlement…

Q: A 10 m * 30 m mat foundation is to be built on the surface of a 20 m thick layer of unsatu-rated…

A: Given : Length L=30 m and width B=10 m thickness of soil layer =20 mUniform pressure stress…

Q: friction angle of soil (ϕ’)? Also find out the failure plane angle (Ѳ) in this case? c. Find the…

A: Given data σ3=300 kN/m2 σdf=250 kN/m2

Q: A circular foundation 2m in diameter is shown in the figure below. A normally consolidated clay…

A: Given Data:Dia of Foundation =2mClay Layer Thickness =5mCc=0.16 , e0=0.85Assuming Weight Density of…

Q: 1- A square rigid foundation measuring 6 ft X 6 ft in plan is supported by 30 ft (H) of layered soil…

A: Settlement of foundation Soils will inevitably deform under the strain of foundation constructions.…

Q: 2 A 2-m clay layer in the field has a current effective stress, o6= 70 kN/m². There is a net stress…

A: 2 m clay layer effective stress = 70 N/mm2 net increse stress = 180 kN/mm2 primary consolidation =?…

Q: Given that B =1 m, L = 3 m, and Q = 110 kN, the soil characteristics given in the figure are Cs =…

A: Given Data : B =1 m L = 3 m, and Q = 110 kN, Cs = 1/5 Cc, Ꝺ’c= 40 kN/m2.

Q: Question Attached

A: for gravel porosity n=0.3 and void ratio e=n1-n=0.31-0.3=0.75given dry density γdry=16 KN/m3we…

Q: A square column foundation with base of 1.56 m is shown in the figure. It carries an axial load of…

Q: For a construction project, 10 ft of compacted earth fill is placed in preparation for erecting a…

A: The expression for the surface load is given by, Here, q is the surface load, A is the area of the…

Q: A square column foundation with base of 1.40 m is shown in the figure. It carries an axial load of…

Q: Q2- An oil storage tank 19 m in diameter is located 2.5 m below the surface of a deposit of clay 15…

Q: A planned construction site is underlain by a thick deposit of normally consolidated clay soil. A…

Q: For a shallow foundation measuring (1.7 m x 2.2 m) as shown below:, Estimate the elastic settlement…

A: Elastic settlement : All soils experience elastomeric settling. In sandy soils, elastic settling is…

Q: Determine the consolidation settlement of the 4-m thick clay layer shown in the figure that will…

A: a) The overburden pressure at any location is the pressure due to the weight of the overlying…

Q: A water tank is to be constructed on the soil deposit shown in the figure below. A circular footing…

A: To find settlement due to primary consolidation

Q: Q-1) Determine the immediate settlement of the foundation shown in Figure (1). The undrained elastic…

A: The given figure is shown blow:

Q: An oil storage tank 35 m in diameter is located 2 m below the surface of a deposit of clay 32 m…

Q: A square footing 3 m by 3 m supports a building column load that results in a foundation bearing…

Q: 10.10 A 300 mm x 450 mm plate was used in carrying out a plate loading test in a sand, where the…

A: The subgrade reaction is defined as the load per unit deformation, Subgrade reaction, k = Load…

Q: Calculate the final voids ratio of a thin clay layer when the vertical stress increases by (Ad 65…

A: Step 1

Q: A normally consolidated clay layer 4.69 m. thick has a void ratio of 1.07. Liquid limit is equal to…

Q: Refer to Figure 11.48. A square foundation, 2.5 x 2.5 m in size, supports a col- umn load of 478 kN.…

A: calculate the unit weight of clay given values is w=19% and G=2.71 γsat=γw G1+w1+Gwysat=21.3 KN/m3…

Q: Estimate the probable final settlement

A: Given- a bed of sand 12 m thick is underlain by a compressible stratum of normally loaded clay which…

Q: For the foundation shown in Figure (2), calculate the immediate settlement for a creep time of (8…

A: Solution: Given: σol = 160 kPa t = 8 years Strip footing = 8 m x 10 m Schmertmann method:…

Q: A bed of sand 12 m thick is underlain by a compressible stratum of normally loaded clay, 6 m thick.…

A: Given: The thickness of sand layer is 12 m. The thickness of clay layer is 6 m. The depth of water…

Q: 4) Refer to Figure 11.41. Given that B =1 m, L = 3 m, and Q = 110 kN, the soil characteristics given…

A: NOTE : Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: Circular foundation diameter B = 2m G.S. 1.0m Sand q = 150 kN/m² y = 17 kNhm² 0.5m W.T. Sand 0.5m 7…

A: Given data-

Q: A 2.5m thick clay is to support a footing as shown below. Assume that the pressure increase Ao' is…

Q: A plate loading test was carried out on a medium dense sand, using a 300 mm wide square plate, and…

A: Given Plate loading test on medium dense sand width, a=300mm=0.3m K0.3=100 MN/m3

Q: Circular foundation diameter B = 2m G.S. 1.0m Sand q = 150 kN/m² y = 17 kNhm² 0.5m W.T. Sand 0.5m…

A: Consolidation settlement: It is defined as the water is squeezed out of the soil and the soil…

Q: Refer to Figure 11.48. A square foundation, 2.5 × 2.5 m in size, supports a col- umn load of 478 kN.…

A: Since we only answer up to 3 sub-parts, we’ll answer the first3. Please resubmit the question and…

Q: Q-f Calculate the settlement of the bridge pier shown in Fig. Q-f (page 3) due to primary…

Q: A normally consolidated clay layer 3.12 m. thick has a void ratio of 1.14. Liquid limit is equal to…

Q: Problem #59 The subsoil profile of a proposed site of construction is shown below, a square footing…

Q: A normally consolidated clay layer 5.86 m. thick has a void ratio of 1.10. Liquid limit is equal to…

A: Given data in question Depth Void ratio Liquid limit Average stress Increased stress Pre…

Q: A 2 m wide square foundation is placed at a depth of 1.5 m, in a very thick homogeneous sand deposit…

A: Given, Df=1.5 mγ=18.5 kN/m3t=25 Square footing =2 m

Q: A clay soil is subjected to a triaxial test under unconsolidated–undrained conditions. At failure,…

Q: The results of 4 drained direct shear tests of an over-consolidated clay are as follows Determine…

A: Given data- Test No Normal Force, N Shear force, N 1 120 114 2 220 179 3 320 239 4 420…

Q: A normally consolidated clay layer 4.38 m. thick has a void ratio of 1.06. Liquid limit is equal to…

A: Asked: To determine the consolidation settlement of the given clay layer. Given: Thickness of the…

Q: An oedometer test is performed on a normally consolidated clay stratum that is 350 cm thick and it…

Concept explainers

Foundation construction

Question

10.9 A plate loading test was carried out on a medium dense
sand, using a 300 mm wide square plate, and ko.3 was deter-
mined as 100 MN/m³. Determine the coefficient of subgrade
reaction for a 2.5 m wide square foundation and a 2.5 m X
3.5 m rectangular foundation.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

A 300 mm 450 mm plate was used in carrying out a plate loading test in a sand, during which the plate settled 5 mm under the applied pressure of 250 kN/m2. a. What is the coefficient of subgrade reaction for a 300 mm wide square plate? b. What would be the coefficient of subgrade reaction of a 2 m 3 m foundation?
Refer to Figure 7.1. A flexible foundation measuring 1.5 m x 3 m is supported by a saturated clay. Given: Df = 1.2 m, H = 3 m, Es (clay) = 600 kN/m2, and qo = 150 kN/m2. Determine the average elastic settlement of the foundation.
For a normally consolidated clay layer, given:Thickness = 3.7 mVoid ratio = 0.82Liquid limit = 42Average effective stress on the clay layer 5 110 kN/m2 How much consolidation settlement would the clay undergo if the average effective stress on the clay layer is increased to 155 kN/m2 as the result of the construction of a foundation?
2.An oil storage tank 35 m in diameter is located 2 m below the surface of a deposit of clay 32 m thick, the water table being at the surface: the net foundation pressure is 105 kN/m2. A firm stratum underlies the clay. The average value of mv for the clay is 0.14 m^2/MN and that of pore pressure coefficient A is 0.65. The undrained value of Young’s modulus is estimated to be 40 MN/m^2 Determine the total settlement under the centre of the tank.
The subgrade reaction of a sandy soil obtained from the plate load test (plate dimensions 1 m × 0.7 m) is 18 MN/m3. What will be the value of k on the same soil for a foundation measuring 5 m × 3.5 m?
A 5.1 m thick clay soil with a current overburden pressure of 89 kPa is going to experience an additional stress of 89 kPa after a new structure is built. If it was determined that the clay is normally consolidated has an initial void ratio of 1.2, a recompression index of 0.07, and a compression index of 0.47. Determine the total amount of settlement that is expected to occur. Provide your answer in meters to 3 decimal places.
An oil storage tank 35min diameter is located 2m below the surface of a deposit of clay 32mthick, which overliesa firm stratum, as shown in the scheme below. The net foundation pressures at the foundation level equal105 kN/m2. The average values of mv and pore pressure coefficient A for the clay are 0.14 m2/MN and 0.65,respectively. The undrained value of Young’s modulus is estimated to be 40 MN/m2. Determine the total settlement(excluding settlement due to secondary compression or creep) under the centre of the tank.
A square footing 3 m by 3 m supports a building column load that results in a foundation bearing pressure of 200 kPa. The deep sand stratum underlying the foundation has an average unit weight of 17.0 kN/m3 and is classified as medium-dense. Use the subgrade reaction method to estimate the foundation settlement.
A mat foundation is shown in Figure P8.6. The design considerations are L = 12 m, B = 10 m, Df = 2.2 m, Q = 30 MN, x1 = 2 m, x2 = 2 m, x3 = 5.2 m, and preconsolidation pressure σ'c < 105 kN/m2. Calculate the consolidation settlement under the center of the mat.
For a construction project, 10 ft of compacted earth fill is placed in preparation for erecting a building. At one of the building’s interior locations, a machine foundation 20 ft square will be installed at floor level to support equipment weighing 2,000 kips. What net stress increase results below the center of the machine in the original soil mass, 5 ft under the natural ground surface? Assume a unit weight of 125 pcf for the compacted fill. Assume the Boussinesq conditions apply.
Assume that the void ratio variation with respect to pressure relationship shown in Figure 4(a)is representative of the clay shown in Figure 4(b ). Determine the settlement in the clay layerunder the centre of footing. Assume, specific gravity G = 2. 7.
A square foundation, 2.5x2.5m in size, supports a column load of 478 kN. The soil characteristics are given in the following figure. Field monitoring indicated that the foundation settlement was 46mm at the end of 2 years. (a) Estimate the average stress increase in the clay layer due to the applied load. (b) Estimate the primary consolidation settlement. (c) What is the degree of consolidation after 2 years? (d) Estimate the coefficient of consolidation for the pressure range. (e) Estimate the settlement in 3 years.