H.W1: For the raft foundation with dimensions of 20 m show immediate and consolidation settlement of the clay layer. V = 80 MN W.T 2 m Raft (20 mx20 m) eo=0.9 eF0.8 E=10 MPa 4 m Clay v=0.45 Ysat.= 20 kN/m

H.W1: For the raft foundation with dimensions of 20 m show immediate and consolidation settlement of the clay layer. V = 80 MN W.T 2 m Raft (20 mx20 m) eo=0.9 eF0.8 E=10 MPa 4 m Clay v=0.45 Ysat.= 20 kN/m

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: The profile at a site consists of 5m of sand overlying 10m of compressible clay, which in turn…

A: The excess pore water pressure is developed in the clay layer by immediately placing the surcharge…

Q: A plan of a foundation 1 m x 2 m is shown in Figure 4-2. a. Estimate the consolidation settlement of…

A: Given DataFoundation dimensions: 1 m×2 m Net stress increase, q0 = 170 kN/m2 Sand layers:Upper sand:…

Q: A3-m thickness of compacted earth fill is placed across an area as preparation for constructing an…

A: The equipment load of 500 KN will not act as a point load as foundation will disperse the coming…

Q: Question-3: A soil profile is shown in Figure 3.1. If a uniformly distri kPa, is applied at the…

A: Given, Compression index Cc=0.27 Recompression index Cr=0.045 Uniformly distributed load∆σ=100…

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

Q: 11. A massive hillside of rhyolite contains joint planes that dip at an angle of 40° toward a stream…

A: Given Data: The dimensions of block are given as: L=1.5mW=4.5mH=3mρ=2.76Mg/m3θ=40°

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) Determine the total and effective principal stresses. (b) Recommend the shear strength…

Q: The profile at a site consists of 5 m of sand overlying 10 m of compressible clay, which in turn…

A: The excess pore water pressure developed immediately after placing the stress of 200 kPa is…

Q: gradation of gravel-sized piece 36. A gravelly sand channel slopes away from a reservoir, through…

A: Given Data: Slope (i) =2330.5or75100 i =0.75 Channel Dimensions, Thickness (t)=6 ft Width (b)=15 ft…

Q: Estimate the total settlement of the clay layer if the load distribution is for a building which…

Q: 8.4 A rectangular foundation is shown in Figure P8.2, given B= 2 m, L=4m q= 240 kN/m², H= 6m, and D;…

Q: Foundation BXL Df Ao Soil u, = Poisson's ratio E, = modulus of elasticity H %3D

A: Given data initial void ratio, eo=0.8 Compression index, CC=0.25 Average effective presure, σo'=110…

Q: Estimate the ultimate consolidation settlement under the centerline of a 25 x 25 meter mat…

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: In a consolidation test, when the load is changed from 50 kN/m² to 100 kN/m², then the void ratio…

A: Given data- A consolidation test- Load is changed from 50 kN/m2 to 100 kN/m2, Void ratio changes…

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

H.W1: For the raft foundation with dimensions of 20 mx20 m shown in the figure, determine the
immediate and consolidation settlement of the clay layer.
V = 80 MN
W.T
2 m
Raft (20 mx20 m)
eo=0.9
eF0.8
E=10 MPa
4 m
Clay
v=0.45
Ysat.= 20 kN/m³
Sand
Hint: Ae = e, - ef

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1:The given data is:

VIEW

Step 2:Calculating immediate settlement:

VIEW

Step 3:Calculating consolidation settlement:

VIEW

Step by step

Solved in 3 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 circular foundation 2m in diameter is shown in the figure below. A normallyconsolidated clay layer 5m thick is located below the foundation. Determine the consolidation settlement of the clay. 1- method 2:1 2- consolidation settlement Cc method
* 3 m b. Is the clay overconsolidated? c. What would be the consolidation settlement beneath the center of the mat? 6m A 15 m X 20 m mat foundation shown in Figure P10.7 car- ries a building load of 36 MN and is placed at 3.0 m depth below the ground level. 5 m For the clay layer, the consolidation tests show that the preconsolidation pressure at the middle of the clay layer is 210 kN/m². a. Find the net applied pressure on the underlying ground. Q Sand Clay y = 16.5 kN/m³ Ysat 19.0 kN/m³ e = 0.82 Ce=0.35 and C, = 0.06 =
Known: B = 1m, L = 2m, Q = 100kN Estimate the consolidation settlement and How long will it take to reach 90% consolidation?
4. A square foundation will be constructed at ground surface. The subsoil profile is shown in the figure below. The mat will have a net uniform load of 500 psf at El. O. The mat will have a net uniform load (Induce stress) at El. -15 of 360 psf, the primary consolidation settlement (in.) of the clay layer directly below the center of the foudnation is? fr ORIGINAL GROUND SURFACE ELEV. O ft ELEV-5 ft. ELEV-10 ft ELEV-20 ft 30 ft SAND Y = 115 pcf MAT FOUNDATION SAND Y = 105 pcf GROUNDWATER TABLE NORMALLY CONSOLIDATED CLAY SATURATED UNIT WEIGHT = 95 pcf COMPRESSION INDEX C₂ = 0.29 VOID RATIO=1.0
Estimate the total consolidation settlement (primary & secondary) after 2 years and 3 months after the completion of primary consolidation settlement of an over consolidated clay layer under the bridge pier as shown below. The pier's dimensions are (2 m x 3 m). Use Yw= 10 kN/m³ and note that the time for completion the primary consolidation is 3 years. | Qo= 960 kN G.W.L 1m Sand Ya=16.5 kN/m 2 m Ysat = 18 kN/m³ Silty Sand Ya=17.5 kN/m 3 m Ysat = 18.5 kN/m3 Clay Ya=20 kN/m , Ysat = 21 kN/m3 e, = 0.6 , Ae=0.04 , o= 78.3 kN/m2 4 m Cc= 0.4, Cs= 0.1, Ca= 0.02
50. Whle drlling a well a rock layer Is encountered at 10000 ft. depth with an excess preSsure (overpressure) of 150 psl. An overpressure zone has fluld pressures In excess of the hydrostatic gradlent. If the overburden density Is 2400 kg/m* and the flutd column Is water what Is the effective stress at this depth? a. b. 57.68 MPa 4127.6psl d. 5549.0psl