Y1 SITUATION: A 12 ft x 10 ft footing carries a total load of 300 tons. Standard penetration testwas conducted on the site. Test results were corrected for over burden pressure andcorrected N-values are listed as shown.Determine the average corrected N-values.Settlements of Loads on Sand (SPT)29Smas28). maximum settlement on dry sand in inchesNjuwestSmay Xa:29-() if the ground water table is located at a depth below theNuwestbase of the footing less than the half the footings width (B/2).XB PaP.Pa= effective overburden pressure at a depth B/2 below the footings base, assumingthe water table is not presentP. effective overburden pressure at the same depth with water table presentq= applied pressure in tons/ftB= in feetDepth (m)Correctod N values404060428.04410.0361203914.03616.036 40.5403939.5

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SITUATION: A 12 ft x 10 ft footing carries a total load of 300 tons. Standard penetration test was conducted on the site. Test results were corrected for over burden pressure and corrected N-values are listed as shown. Determine the average corrected N-values. Settlements of Loads on Sand (SPT) Smas 24 28 maximum settlement on dry sand in inches Nwet 29 () if the ground water table is located at a depth below the Nwest Sma =Xa base of the footing less than the half the footings width (B/2). Xs= PP. Pa= effective overburden pressure at a depth B/2 below the footings base, assuming the water table is not present P.= effective overburden pressure at the same depth with water table present q= applied pressure in tons/ft B = in feet Depth (m) Corrected N values 40 40 60 42 80 44 100 36 120 39 14.0 36 16.0 36

SITUATION: A 12 ft x 10 ft footing carries a total load of 300 tons. Standard penetration test was conducted on the site. Test results were corrected for over burden pressure and corrected N-values are listed as shown. Determine the average corrected N-values. Settlements of Loads on Sand (SPT) Smas 24 28 maximum settlement on dry sand in inches Nwet 29 () if the ground water table is located at a depth below the Nwest Sma =Xa base of the footing less than the half the footings width (B/2). Xs= PP. Pa= effective overburden pressure at a depth B/2 below the footings base, assuming the water table is not present P.= effective overburden pressure at the same depth with water table present q= applied pressure in tons/ft B = in feet Depth (m) Corrected N values 40 40 60 42 80 44 100 36 120 39 14.0 36 16.0 36

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter17: Subsoil Exploration

Section: Chapter Questions

Problem 17.10P

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