8/2/2019 Overturning

1/9

Dia of pier = 0.8 m

Ht above GL = 0.5 m

Ht of soil = 0.5 m

Ht in rock = 2 m

Uplift = 81827 kg

Side thrust = 17866 kg

phi = 40

kp = 4.60

Moment due to uplift = 32730.8 kg.m

Moment due to Side thrust = 53598 kg.m

Overturning Moment = 86328.8 kg.m

Self wt = 3617.28 kg

moment due to self wt = 1446.91 kg.m

F1 = 12141.12 kg

F2 = 60705.61 kg

resltant R = 72846.73 kg

Distance d = 1.17 mmoment due to passive pres= 84987.86 kg.m

Resisting moment = 86434.77

Since Resisting moment > overturning moment

8/2/2019 Overturning

2/9

Dia of pier = 0.8 m

Ht above GL = 0.5 m

Ht of soil = 0.5 m

Ht in rock = 2 m

Uplift = 81827 kg

Side thrust = 17866 kg

phi = 40

kp = 4.60

Moment due to uplift = 32730.8 kg.m

Moment due to Side thrust = 53598 kg.m

Overturning Moment = 86328.8 kg.m

Self wt = 3617.28 kg

moment due to self wt = 1446.91 kg.m

F1 = 12141.12 kg

F2 = 60705.61 kg

resltant R = 72846.73 kg

Distance d = 1.17 mmoment due to passive pres= 84987.86 kg.m

Resisting moment = 86434.77

Since Resisting moment > overturning moment

8/2/2019 Overturning

3/9

Dia of pier = 0.8 m

Ht above GL = 0.5 m

Ht of soil = 1 m

Ht in rock = 1.8 m

Uplift = 81827 kg

Side thrust = 17866 kg

phi = 40

kp = 4.60

Moment due to uplift = 32730.8 kg.m

Moment due to Side thrust = 58957.8 kg.m

Overturning Moment = 91688.6 kg.m

Self wt = 3979.008 kg

moment due to self wt = 1591.60 kg.m

F1 = 24282.24 kg

F2 = 67990.28 kg

resltant R = 83045.28 kg

Distance d = 1.14 mmoment due to passive pres= 94409.37 kg.m

Resisting moment = 96000.97

Since Resisting moment > overturning moment

8/2/2019 Overturning

4/9

Dia of pier = 0.8 m

Ht above GL = 0.5 m

Ht of soil = 1.5 m

Ht in rock = 1.7 m

Uplift = 81827 kg

Side thrust = 17866 kg

phi = 40

kp = 4.60

Moment due to uplift = 32730.8 kg.m

Moment due to Side thrust = 66104.2 kg.m

Overturning Moment = 98835 kg.m

Self wt = 4461.312 kg

moment due to self wt = 1784.52 kg.m

F1 = 36423.37 kg

F2 = 77703.18 kg

resltant R = 97007.57 kg

Distance d = 1.12 mmoment due to passive pres= 108772.31 kg.m

Resisting moment = 110556.84

Since Resisting moment > overturning moment

8/2/2019 Overturning

5/9

Dia of pier = 0.8 m

Ht above GL = 0.5 m

Ht of soil = 2 m

Ht in rock = 1.5 m

Uplift = 81827 kg

Side thrust = 17866 kg

phi = 40

kp = 4.60

Moment due to uplift = 32730.8 kg.m

Moment due to Side thrust = 71464 kg.m

Overturning Moment = 104194.8 kg.m

Self wt = 4823.04 kg

moment due to self wt = 1929.22 kg.m

F1 = 48564.49 kg

F2 = 84987.86 kg

resltant R = 100164.26 kg

Distance d = 1.02 mmoment due to passive pres= 102440.72 kg.m

Resisting moment = 104369.93

Since Resisting moment > overturning moment

8/2/2019 Overturning

6/9

Dia of pier = 0.8 m

Ht above GL = 0.5 m

Ht of soil = 2.5 m

Ht in rock = 1.5 m

Uplift = 81827 kg

Side thrust = 17866 kg

phi = 40

kp = 4.60

Moment due to uplift = 32730.8 kg.m

Moment due to Side thrust = 80397 kg.m

Overturning Moment = 113127.8 kg.m

Self wt = 5425.92 kg

moment due to self wt = 2170.37 kg.m

F1 = 60705.61 kg

F2 = 97128.98 kg

resltant R = 118375.94 kg

Distance d = 1.04 mmoment due to passive pres= 122928.86 kg.m

Resisting moment = 125099.23

Since Resisting moment > overturning moment

8/2/2019 Overturning

7/9

Dia Depth in soil Depth in rock Volume Vol Quoted percentage increase

0.8 0.5 2 1.256 0.7536 1.67

0.8 1 1.8 1.40672 1.0048 1.40

0.8 1.5 1.7 1.60768 1.256 1.28

0.8 2 1.5 1.7584 1.5072 1.17

0.8 2.5 1.5 2.0096 1.7584 1.14

8/2/2019 Overturning

8/9

Dia of pier = 1.2 m Dia at bottom =

Ht above GL = 0.5 m

Ht of soil = 0.5 m volume =

Ht in rock = 1 m

Uplift = 81827 kg

Side thrust = 17866 kg

phi = 40

kp = 4.60

Moment due to uplift = 49096.2 kg.m

Moment due to Side thrust = 35732 kg.m

Overturning Moment = 84828.2 kg.m

Self wt = 2612.48 kg

moment due to self wt = 522.50 kg.m

F1 = 12141.12 kg

F2 = 36423.37 kg

resltant R = 24282.24 kg

Distance d = 0.63 mmoment due to passive pres= 15176.40 kg.m

Resisting moment = 15698.90

Fails in Overturning

8/2/2019 Overturning

9/9

0.4 m

1.088533 m^3 1.0048