aashto-pile

8/10/2019 AASHTO-Pile

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Depth 120 ft N value at toe 50 inputInterval 5 ft outputDivision 24

24 in55 pcf Note

5 ft

5--10 10--15 15--20 20--25 25--30 30--35 35--4021.5 26.5 31.5 36.5 41.5 46.5 51.50.87 0.80 0.74 0.68 0.63 0.57 0.53

32.32 36.7 40.1 42.8 44.8 46.1 46.7 Final Qs = 36.7 76.8 119.6 164.4 210.5 257.3

Total Capacity (Ultimate)-kip = 225.14 265.28 308.12 352.93 399.02 445.75F.S = 2

FINAL FINAL FINAL Total Capacity (Service)-kip 112.57 132.64 154.06 176.46 199.51 222.88

FINAL ANSWER

Use this methodMethod-2qt = 60 Ksf Qt = qt * At

188 Kip

Better not to use this method.Method-1 Ksf qt = 84

(B) Toe resistance- 78

Main Equation Qs = 3.14 * B * yi * Zi * i * zi

Qsi Kip =

yi Effective soil unit weight =zi ith increment of pile length (ft) =

Zi Depth of midpoint of the ith interval (ft) = Load transfer factor of ith interval (ft) =

AASHTO METHOD (1992) Page - 79 Specification for road highway

(A) Skin friction page - 78

B Diameter of pile =


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40--45 45--50 50--55 55-60 60-65 65-70 70-75 75-80 80-85 85-90 90-95 95-100 100-105 105-110 110-11556.5 61.5 66.5 71.5 76.5 81.5 86.5 91.5 96.5 101.5 106.5 106.5 111.5 116.5 121.50.48 0.44 0.39 0.35 0.31 0.27 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.2546.8 46.2 45.1 43.4 41.3 38.6 37.3 39.5 41.7 43.8 46.0 46.0 48.1 50.3 52.5

304.0 350.2 395.3 438.7 480.0 518.6 555.9 595.4 637.1 680.9 726.9 772.9 821.0 871.3 923.8 kip

492.51 538.72 583.81 627.23 668.49 707.06 744.40 783.91 825.57 869.39 915.38 961.36 1009.50 1059.80 1112.25 kip45.98 48.14 50.30 52.46

246.26 269.36 291.90 313.62 334.24 353.53 372.20 391.95 412.79 434.70 457.69 480.68 504.75 529.90 556.13 kip

196.8845

241.88


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N SutDepth 120 ft input 0 0Interval 5 ft output 2 0.25Division 24 4 0.5

8 124 in 16 2

16> 25 ft

5--10 10--15 15--20 20--25 25--30 30--35 35--40 40--45

0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.552 2 2 2 1 2 2 2

0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.254.32 4.32 4.32 4.32 4.32 4.32 4.32 4.32

4.3 8.6 13.0 17.3 21.6 25.9 30.2F.S 2

7.07 7.07 7.07 7.07 7.07 7.07 7.07 7.077.07 11.38 15.70 20.02 24.34 28.65 32.97 37.29

5.69 7.85 10.01 12.17 14.33 16.49 18.64

Qt/Sut = Nc*At = 28.26Nc = 6.0(1+.2(D/B)) = 9 eq.4.6.5.1.3-2

Qs =3.14*B* *Su*ZiThis values has been

taken from Tank

Load transfer factor of ith interval (ft) =

Sui

Total Capacity (Service)-kip

N Values From Soil Report

Qs Kip

Ultimate capacity of pile

Qsi

B Diameter of pile =

zi ith increment of pile length (ft) =


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45--50 50--55 55-60 60-65 65-70 70-75 75-80 80-85 85-90 90-95 95-100 100-105 105-110

0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.552 2 2 2 2 2 2 2 2 2 50 50 50

0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 2.00 2.00 2.004.32 4.32 4.32 4.32 4.32 4.32 4.32 4.32 4.32 4.32 34.54 34.54 34.5434.5 38.9 43.2 47.5 51.8 56.1 60.4 64.8 69.1 73.4 107.9 142.5 177.0

7.07 7.07 7.07 7.07 7.07 7.07 7.07 7.07 7.07 7.07 56.52 56.52 56.5241.61 45.92 50.24 54.56 58.88 63.19 67.51 71.83 76.15 80.46 164.46 199.00 233.5420.80 22.96 25.12 27.28 29.44 31.60 33.76 35.91 38.07 40.23 82.23 99.50 116.77


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