During a Standard Penetration Test (SPT), unusually low blow counts are encountered in a soil expected to be medium-dense to dense sand. This is a indication thatthe following condition is most likely present:Oa Cobbles are encounteredOb The sampler drive shoe is pluggedOr The groundwater in the borehole is much lower than in situ conditions immediately outside the boreholeOd The sample drive shoe is badly damaged or worn due to too many drivings to refusal

During a standard penetration test (SPT) , unusually low blow counts are encountered in a soil…

Answered: During a Standard Penetration Test…

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 sample having initial void ratio 0.75and thickness 20 mm is subjected toconsolidation test. Initially the dial gaugewas set to zero. At the end of consolidation,the final dial gauge reading was observedto be 0.25 mm. The final void ratio of thesample is....
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please help me... If a soil sample tested in a direct shear box of 60 mm by 60 mm and the maximum readings for normal loads of 0.3, 0.5 and 1.0kN were 202, 265 and 511 kN, determine the strength parameters corresponding to effective stress. Please find: 1) UU test; Unconsolidated Untrained (Q-test or quick test) 2) CD test; Consolidated Drained ( S-test or slow test) 3) CU test; Consolidated Untrained (R-test) 4) UC test; Unconfined Compression (σ_3=0) Thank you..
An SPT test was conducted in a dry sand (no ground water table) with a unit weight of 18kN/m3. The drill rig used had an energy efficiency rating of 60%. The recorded blow counts were 6, 7 and 8. The depth of testing was 6 m. Use the Liao and Whitman (1986) correction for overburden stress to determine the corrected SPT value at this depth. N60=? CN=? (use 3 decimals) N1(60)=? (truncated to an integer value)
Three samples of Soil were collected during soil exploration for the construction of a Highrise Building. a) Choose the most appropriate Test to determine shear strength parameters for each of the sample described as under i) Saturated Plastic Clay ii) Well Graded Sand iii) Silty Clay b) Draw typical graph between shear stress and normal stress for each of the sample described as above.
It’s a common observation that hydraulic conductivity of fine sands is greater than that of clean gravels (True or False) Standard Penetration Test (SPT) N-values can be correlated with soil’s unconfined compressive strength (True or False) If a soil sample has a 100% degree of saturation, the sample’s water content also becomes 100% (True or False) In the consolidation theory, the greater the coefficient of consolidation (cv), the faster the consolidation (True or False)
sand deposit has been identified beneath a site located adjacent to a river. The sand deposit is 15 feet thick and the top of the layer is 12 feet below the ground surface and overlain by a very stiff clay and is underlain by bedrock. The water level has been measured to be at a depth of 10 feet. The standard penetration resistance of the layer has been determined to be 12 blows per foot and a standard sampler was used; a drill rig with a safety hammer with an efficiency of 60% was used. The length of the drill rod is 10 meters and the borehole diameter is 5 inches (127 mm). The design earthquake has been designated as a moment magnitude 6-3/4 event on a nearby fault and the maximum ground acceleration is expected to be 0.40 g. The wet unit weight of the clay soils is 150 pounds per cubic foot and the wet unit weight of the sand soils is 180 pounds per cubic foot. The sands have 35% fines content according to a grain size analysis. Compute the factor of safety against liquefaction of…
Q11 Please provide justified answer asap to get a upvote
Please solve this problem and explain each step clearly, Please explain the theory and show your work clearly, I really want to understand. Thank you
A sand deposit has been identified beneath a site located adjacent to a river. The sand deposit is 15 feet thick and the top of the layer is 12 feet below the ground surface and overlain by a very stiff clay and is underlain by bedrock. The water level has been measured to be at a depth of 10 feet. The standard penetration resistance of the layer has been determined to be 12 blows per foot and a standard sampler was used; a drill rig with a safety hammer with an efficiency of 60% was used. The length of the drill rod is 10 meters and the borehole diameter is 5 inches (127 mm). The design earthquake has been designated as a moment magnitude 6-3/4 event on a nearby fault and the maximum ground acceleration is expected to be 0.40 g. The wet unit weight of the clay soils is 150 pounds per cubic foot and the wet unit weight of the sand soils is 180 pounds per cubic foot. The sands have 35% fines content according to a grain size analysis. Determine the cyclic resistance ratio, CRR. Use this…
A Cone Penetrometer Test (CPT) produces a continuous record of tip and sleeve resistance as well as pore pressure induced behind the cone tip. At a certain depth, the following are recorded: Cone Tip Resistance = 17 tsf; Friction Ration (Rf) = 2.6% The soil is most likely a O a Clayey Sit Ob Clay Sand Od Silt

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