Determine: (a) the capillary height h, of the rise of the moisture into the sand stratum above the water table, and (b) determine the resulting negative porewater pressure #. fine sand d=0.30 ma G₁-2.66,-0.55, S-50% zone of capillary rise saturated clay G₂-271 he + pore pressure - WT

Determine: (a) the capillary height h, of the rise of the moisture into the sand stratum above the water table, and (b) determine the resulting negative porewater pressure #. fine sand d=0.30 ma G₁-2.66,-0.55, S-50% zone of capillary rise saturated clay G₂-271 he + pore pressure - WT

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter2: Geotechnical Properties Of Soil

Section: Chapter Questions

Problem 2.22P

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Question

Determine: (a) the capillary height h, of the rise of the moisture into the sand stratum
above the water table, and (b) determine the resulting negative porewater pressure u.
fine sand
d=0.30 man
G₁=2.66, a=0.55, S-50%
zone of capillary rise
saturated clay
G₂-271
ke
+
pore pressure
+he
WT

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PROBLEM 1: A layer of sand 4.5m thick with specific gravity of 2.60, degree of saturation of 85%, and porosity of 41.18% with a 5 m thick of clay with specific gravity of 2.65 and a water content of 0.28. Ground water table is located at the interface of the two soils. Compute the depth below the ground surfac would the effetive stress be 100kPa. B. Compute the effective stress at a depth 8m below the ground surface. C. Compute the depth of excavation required to reduce the effective stress by 60 kPa
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Adry sand is known to have an angle of internal friction equal to 36°. A triaxial test is planned, where the confining pressure will be 40 kPa. What maximum axial stress (major principal stress) should be predicted?
Soil mechanics ضحثعفجضمبتةئزذز
Subject: Soil mechanics
The water table in a deposit of uniform sand is located at 2m below the ground level. Assuming the soil above the water table be dry N and the void ratio is 0.75. The effective stress (in k- rounded off to nearest integer) at a depth of 5m below the ground level is N =9.81k-2 Take G = 2.65 and yw W m m 2'
I need an answer. Asap subject: soil mechanics choices are indicated
geotech. engineering A Thick layer of clay underlies a sand formation having a thickness of 4m. the groundwater is located 2m below the ground surface. The specific gravity of sand and clay is 2.65 with sand having an average void ratio of 0.52. the clay has a water content of 42%. Degree of saturation above the water table is 0.37. a. Compute the moist unit weight of the sand b. Total stress at a depth 10 m below the ground surface c. Effective stress at a depth of 10 m below the ground surface
Table 1.2 Layer No. Thickness, H Soil Parameters e = 0.51, Gs = 2.52 e = 0.56, Gs = 2.65, S = 61% w = 20%, e = 0.51 1 6.2 ft 2.1 ft 3 3.56 m H2 | Dry sand | Clay; zone of capillary rise Clay Rock Determine: a.Effective stress at ground water surface. b.Effective stress at the immediate zone of capillary at clay layer below the dry sand. c.Effective stress at the interface of clay and rock layer.
8. Due to uniformly distributed load on the ground surface, stress increase at the middle of the clay layer is 4p = 1000 lblft2, H1 = 8 ft, H2 = 15 ft, and H3 =17 ft. Sand: d: Ydry = 110 pcf, Ysat Clay: Ysat = 120 pcf, Cc = 15-4- T ↓ ↓ ↓ ↓ Sand 115 pcf 0.36, eo = 0.9 clay Sand Clay If the clay is normally consolidated, estimate the primary consolidation settlement in inches.
Choices: ( ) -76.7 ( ) -67.2 ( ) 72.6 ( ) -76.2 ( ) 67.2 ( ) -62.7