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TitlePile Design - Great Stuff
Tags Deep Foundation Pascal (Unit)
File Size2.3 MB
Total Pages126
Document Text Contents
Page 1

For Review













A 18 APR 2012 FOR REVIEW H.I.KIM J.B.SEO S.H.JU

Rev. DATE REASON FOR REVISION DRAWN CHECKED APPROVED

EMPLOYER Kenya Electricity Generating Company Ltd.

Stima Plaza, Phase III

Kolobot Road,

P.O. Box 47936 – 00100 GPO,

Nairobi, KENYA



Tel : +254 20 3666000

Fax : +254 20 248848

EMPLOYER’S REPRESENTATIVE
Sinclair Knight Merz Ltd

Carlaw Park Commercial,

12-16 Nicholls Lane, Parnell, Auckland,

NEW ZEALAND



Tel : +64 9 928 5500

Fax : +64 9 928 5501

EPC CONTRACTOR





Hyundai Engineering Co., Ltd.

Hyundai 41 Tower, Mok 1-dong, Yangcheon-gu,

Seoul, KOREA



Tel : +82 2 2166 8573

Fax : +82 2 2643 0773

Toyota Tsusho Corporation

3-13, Konan 2-chome, Minato-ku,

Tokyo, JAPAN



Tel : +81 3 4306 3200

Fax : +81 3 4306 8908

DRAWN BY DATE PROJECT

H.I.KIM 18 APR 2012 OLKARIA IV GEOTHERMAL POWER PLANT
DESIGN BY DATE

E.J.LIM 18 APR 2012 TITLE & DESCRIPTION

CHECK BY DATE DESIGN CALCULATION –

BORED CAST IN-SITU PILE
J.B.SEO 18 APR 2012

APPROVED BY DATE

S.H.JU 18 APR 2012

DRAWING SCALE DRAWING No. Rev.

NONE ZP00700-B2CE-ECG-CLC-0001 A

Page 2

No. C O N T E N T S REF.

GENERAL

General
Design Code & Reference
Design Method
Design Data

GEOTECHNICAL PILE CAPACITY

BH-01
BH-02
BH-04
BH-05
BH-06
BH-08
BH-09
BH-10
BH-11
DBH-01
DBH-02

SUMMARY

STRUCTURAL PILE DESIGN

REV. A

TITLE : DESIGN CALCULATION - BORED CAST IN-SITU PILE

1.0

1.1
1.2

2.1



OLKARIA IV GEOTHERMAL POWER PLANT

1.3
1.4

2.0

2.6
2.7

2.5

2.10

2.2
2.3
2.4

2.8

4 0

2.9

3.0

2.11

STRUCTURAL PILE DESIGN

Cast In Situ PILE ( Φ = 600, L = 15m ) Calculation
Cast In Situ PILE ( Φ = 600, L = 18m ) Calculation
Cast In Situ PILE ( Φ = 600, L = 20m ) Calculation
Cast In Situ PILE ( Φ = 600, L = 25m ) Calculation

CONCLUSIONS

ATTACHMENT

Attachment-1: Borehole Location
Attachment-2: Borehole Logs
Attachment-3: Pile Drawing

4.1

4.3

4.0

4.4

4.2

5.0

Page 63

No. C A L C U L A T I O N REF.

OLKARIA IV GEOTHERMAL POWER PLANT
REV. A

TITLE : DESIGN CALCULATION - BORED CAST IN-SITU PILE

2) Pile parameters

a) Modulus of elasticity, E = Mpa

b) Moment of inertia, I = m4

c) Section modulus, S = m3

d) Embedded pile length D = m

e) Diameter or width, b = m

f) Ultimate compression strength for concrete, f'c = Mpa

g) Eccentricity of applied load for free-headed piles, ec =

h) Resisting moment of pile for concrete piles, My = fc' S kN-m

3) Dimensionless length factor

a) Stiffness factor

βh = ( Kh b / 4EI )
0.25 = m-1 for Cohesive soil,

0.60

25.0

0.0

530.1

0.30

25000

0.0064

0.0212

18.0

η = (Kh / EI)
0.20 = m-1 for Cohesionless soil,

b) Length factor

βh D = for Cohesive soil,

η D = for Cohesionless soil,

4) Determine if the pile is long or short

a) Cohesive soil:

where, βh D > 2.25 (long pile)

βh D < 2.25 (short pile)

b) Cohesionless soil:

where, η D > 4.0 (long pile)

η D < 2.0 (short pile)

2.0 < η D < 4.0 (intermediate pile)

→ Soil type =

Pile type =

5.35

0.00

long pile

short pile

Cohesive

long pile

0.00

61/124

Page 64

No. C A L C U L A T I O N REF.

OLKARIA IV GEOTHERMAL POWER PLANT
REV. A

TITLE : DESIGN CALCULATION - BORED CAST IN-SITU PILE

5) Soil parameters

cu = kPa

where, cu = cohesion for cohesive soil

6) Ultimate lateral load (Cohesionless, long pile)

My/cub
3 =

ec/b =
Qu/cub

2 = from the below chart
Qu = kN

22.0

592.4

74.8

32.8

0

7) Allowable lateral load capacity

Hu = kN

Ha = Hu / FSlateral = kN

592.4

296.2

62/124

Page 125

No. C A L C U L A T I O N REF.

OLKARIA IV GEOTHERMAL POWER PLANT
REV. A

TITLE : DESIGN CALCULATION - BORED CAST IN-SITU PILE

Att h t 3 Pil D iAttachment-3: Pile Drawing

123/124

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