Determine: (a) the capillary height h. of the rise of the moisture into the sand stratumabove the water table, and (b) determine the resulting negative porewater pressure u.ine sandd=0.80 mmG-266, e= 055, S-50%WTZone of capillary risekepore pressuresatarated clayG-271*- 4596+hi

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Answered: Determine: (a) the capillary height h.…

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 soil deposit exists with a level ground surface. The saturated unit weight of the soil is 125 pcf, and the water table is at the ground surface. (a) Determine the principal stresses acting at a depth 15 ft below the ground surface that results from the effective (submerged) soil weight if the lateral pressure is 0.45 times the vertical pressure. (Recall that the subsurface vertical and horizontal pressures or stresses are the principal stresses when the site surface is horizontal.) (b) What is the magnitude of the maximum shear stress relating to the effective stresses at this depth?
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 5.00m clay overlain with a 5.00m sand. The sand has a specific gravity of 2.65 and a void ratio of 0.70. The clay has a saturated unit weight of 19.22kN/cub.m, a void ratio of 0.90 and a liquid limit of 60%. The water table is located 1.00m below the ground surface and the soil above the water table is 50% saturated. A load of 75kPa is distributed on top of the ground surface. What is the overburden pressure on the mid-height of the clay layer?
11₁. خطأ درجة 0.00 من 1.00 X A new building is planned upon the site shown below. Assume that the clay solids have a specific gravity of 2.67. (for clay layer, eo=0.91, LL=50%, ysat=120pcf) & feet 7110 pct. 7 feet 17 feet ww.349, LL50%.120 pct The initial effective stress (ksf) at :the mid of clay layer is The total consolidation settlement :(inch) is The final effective stress (ksf) at the :mid of clay layer is .Your answer is incorrect X - 6.736 ▼ 2.407 مراجعة X -7.6 سؤال 1 الجواب الصحيح هو: The initial effective stress (ksf) at the mid of clay layer is: → 1.74, The total consolidation settlement (inch) is: → 7.6, The final effective stress (ksf) at the mid of clay layer is: → 2.74 |||
For a certain soil, the angle of internal friction is 30°. The coefficient of active and passive pressure. (a) 0.6, 2.4 (c) 0.5, 0.8 (b) 0.4, 1.2 (d) 0.33, 3
if sand has angle of angle of internal friction 32 degree. Determine coefficient of active earth pressure
A clay s tratum(e) thick is locatrd at depth of (6m) from the ground Sarface The natural Mo's fure Con tent of the clay is (s6%) oind Gc-275 The Sil sthafum between the ground sur face and the clay Consist of fine Sand. The water table is focuteel at deth of czm) below the ground Srface, The Sum berge d unit weiglt of fine Sand is (la.5) kNhn3 and its moist unit weight akeive woter table is (18.68 ENm) Caleutate the effective stress at the Center of the clay tayer.
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4- A 22 ft clay layer in the field (drained on one side) is normally consolidated. When the pressure is increased from 1,000 lb/f? to 3,000o 1b/ft?, the void ratio decreases from 0.9 to 0.75. The hydraulic conductivity, k, of the clay for the above loading range was found to be 2.4 x 10 in'sec. a) How long (in days) will it take for the clay layer to reach 50% consolidation? b) What is the settlement at that time (that is, at 50% consolidation)?
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.

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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. ine sand d-0.30 mm G-2.66, e= 0.55, S-50% -heja WT zone of capillary rise he pere pressure saturated clay G-271 w-45% thet