2. The subsoil at the site consists of a A m thick homogeneous layer of dense sand having the following properties:kNYD = BGs = C$ = D°The natural ground water table lies at E m below the ground surface.a. Determine the shear strength of the soil along a horizontal plane through the middle of the sand layer.b. If during monsoon, the water table rises to the ground level, determine the shear strength of the soil along a horizontal plane through the middleof the sand layer.c. Determine the change in shear strength at the bottom of the sand layer.Problem Data:Last Digit ofStudent NumberABCD6.14172.6533

Answered: Image /qna-images/answer/c43d6baa-a638-4671-ad16-15a0f700e661.jpg

Answered: 2. The subsoil at the site consists of…

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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A dense silt layer has the following properties: e=0.30, D10=10µm and capillary constant = 0.20cm2 Free ground water level is 8m below the ground surface. Determine the vertical effective stress (kPa) at 5m depth (point A). Assume unit weight of solids = 26.5 KN/m3 and that the soil above the capillary rise and ground surface is partially saturated at 50%.
A huge marble boulder on a quarry site sits on the ground. This marble is 10 m by 10 m and has a height of 16 m. The boulder is situated on a 6 m thick soil with e = 0.70, S = 65%, and G, = 2.68, then by a 5 m thick clay with e = 0.80, G, = 2.71 and LL = 48. The water table exists in between the sand-clay interface. The specific gravity of the marble is 2.60. Assuming that the clay is normally consolidated... Q: What is the primary consolidation settlement of the clay layer in mm using approximate method? Round off your answer to the nearest whole number.
A stratified soil is to be analyzed for stresses. The stratified soil is composed of sand, silt, clay and gravel. The 2.80-m thick gravel underlays the 3.60-m thick clay while the 4.0-m thick sand which overlays the 3.0-m thick silt is overlain by the gravel. Ground water table is at a depth of 8.0-m from the surface of the stratified soil. Soils above GWT are dry. Use the given soil properties below, draw the complete soil profile and perform the following requirements: For sand: Yd = 16.35 kN/m³, Ysat = 19.62 kN/m³ For silt: Yd = 19.35 kN/m³, Ysat = 22.22 kN/m³ For clay: Yd = 17.35 kN/m³, Ysat = 20.82 kN/m³ For gravel: Yd = 18.35 kN/m³, Ysat = 21.52 kN/m³ Note for 1a, 1b, 1c, and 1d that there is no capillary rise in the soils. Draw completely the soil profile. 1a. Effective stress at the middle of the sand 1b. Effective stress at the middle of the silt 1c. Effective stress at the middle of the clay 1d. effective stress at the middle of the gravel
A soil profile shown is subjected to a load of 48 kN/m2 at the ground surface. The preconsolidation pressure of the clay Pc = 160 kPa. Determine the settlement of the clay layer caused by primary consolidation. Use Cs = 1/5 Cc. 48 kN/m2 ground surface 4m Sand Ys =16 kN/m³ ground water țablę 6m Y sat =18 kN/m³ Clay 3m 6m Ysat =19 kN/m³ Ans. 71 mm
A rectangular barge 8.9 m wide draft in seawater of 2.35 m. It's center of gravity is 2.65 m above the bottom of the barge. Determine the following if it has 12 m long and 3.5 m high: 1. Initial metacentric height (in meter) 2. Righting or overturning moment when the barge tilts until one side is just at the point of submergence.
1. A soil profile is shown in the figure. A uniformly distributed load of 75kPa is applied at the ground surface. The clay is normally consolidated. Compute the compression index Compute the primary consilidation settlement
The soil profile at a site consists of a 2.0 m thick sand layerat the top, underlain by a 3.0 m thick clay layer. The watertable lies at a depth of 1.0 m below the ground level. Thebulk and saturated unit weights of the sand are 16.0 kN/m3and 19.0 kN/m3, respectively. The properties of the clay are:water content = 45.0%, specific gravity of the soil grains =2.70, compression index = 0.65, swelling index = 0.08, andoverconsolidation ratio = 1.5.a. The ground level is raised by placing a 1.5 m high compactedfill with unit weight of 20.0 kN/m3. What is theconsolidation settlement?b. When the consolidation due to the fill is completed,it is proposed to construct a warehouse imposing a uniform pressure of 40.0 kN/m2. What would be theconsolidation settlement due to the construction of thewarehouse?
A dense silt layer has the following properties: e =0.406 D10= 10.1 um Capillary constant = 0.209 sq.cm Free ground water level is 8m below the ground surface. 1.) Find the height of capillary rise in the siltin meters. 2) Find the vertical effective stress at 6m depth. Assume ys = 26.51 kn/m3 and the soil above capillary action rise and ground surface is partially saturated at 79%.
Determine total stress at end of silt layer
A soil formation is composed of 5 m thick clay and 5 m thick sand being the sand above the clay. The ground water table (GWT) is located at 2 m below the ground surface. 40 kPa 2 m Sand Ydry = 17.66 kN/m^3 VGWT Sand 3 m Y sat = 20.93 kN/m^3 LI = 64% PL = 20% w = 40% 5 m Clay eo = 0.60 G. = 2.60 1. Calculate the primary compression index. [ Select ] 2. Calculate the primary consolidation settlement of the normally consolidated clay layer if there is a surcharge of 40 kPa acting on the ground surface. [ Select] 3. Calculate the secondary settlement of the clay layer 5 years after the completion of the primary consolidation settlement. Time for completion of primary settlement is 2 years. Use C, = 0.02. [Select ]
A 3m deep sand layer has a specific gravity of 2.68 and a void ratio of O.60. Under this layer is a 2.5m deep clay profile with a specific gravity of 2.7 and a moisture content of 30%. The water table is observed at 1m below the ground surface. Determine the effective soil pressure at the midweight of clay.
A normally consolidated clay layer is 18 m thick. Natural water content is 45 %, saturated unit weight is 18 kN/m3 , grain specific gravity is 2.7 and liquid limit is 63 %. The vertical stress increment at the center of clay layer due to foundation load is 9 kPa. Ground water table is at the surface. Determine the settlement.

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