Centrum Pile Calculator Sweden

Centrum pile dimension, b	235mm
Centrum pile type	Type 4
Centrum pile joint type	CPG-K2
Centrum rock point	CP-RP 235L-25-50
Nominal cover, c / production tolerance	25 / 10 mm
Concrete recipe	R1 - Standard
Class of lifespan	L100
Exposure classes of pile element	XC2, XF1

Influence of pile installation
Reduction factors for material strengths
Concrete, μ_c	0,8
Compression reinforcement, μ_sc	0,8
Tension reinforcement, μ_st	0,9
Eccentricity on rock point	Ø_tip/10

Ultimate limit state, ULS
Long-term load percentage	80%
Calculate M_Rd at normal force, N =	0 kN
Serviceability limit state, SLS
Permitted crack width, w_max	0,40 mm
Exposure class(es), crack width	XC2
Calculate M_Rd at normal force, N =	0 kN

Cohesive soil
The deflection resistance of normally consolidated cohesive soil is determined according to the Swedish Commission on Pile research Report 96:1 supplement 2.
Mean undrained shear strength, c_um	10 kPa
Conversion factor, η	0,95
c_uk = η · c_um	9,5 kPa
c_ud = 1/γ_cu · η · c_um	6,33 kPa
Long-term load percentage, a_lt	80 %

Friction soil
The deflection resistance of friction soil is determined according to the Swedish Commission on Pile Research report 96:1 supplement 2.
Soil type	Sand
Depth in soil	5 m
Below/above ground water level	Below groundwater level
Relative firmness	Medium high
Growth factor, n_h	MPa/m
Effective overburden pressure, σ'_v	50 kN/m²
Friction angle, φ_k	30^o
Friction angle, φ_d	31^o
Passive earth pressure coefficient, K_pk	3,12
Passive earth pressure coefficient, K_pd	3,12

Below groundwater level

Manual input of the deflection resistance parameters of the soil.

Relative resistance modulus, k·d

Limit resistance, q_y

Relative deflection at lim. res. y_y/d

Calculation results ULS

Compression resistance

Pile section

N_c,Rd,pile

= kN

Pile joint section

N_{c,Rd,pilejoint}

= kN

Rock point*

N_{c,Rd,rockpoint}

= kN

Pile element

N_c,Rd

= kN

*Capacity of rock point is determined for standard concrete C50/60

Tension resistance

Pile section

N_t,Rd,pile

= kN

Pile joint section

N_{t,Rd,pilejoint}

= kN

Pile element

N_t,Rd

= kN

Moment capacity at N = 0

Pile section

M_Rd,pile

= kNm

Pile joint section

M_Rd,pilejoint

= kNm

Pile element

M_Rd

= kNm

Buckling length at N_c,Rd = kN

l_cr

= m

Calculation results SLS

Compression resistance

Pile section

N_c,Rd,pile

= kN

Pile joint section

N_{c,Rd,pilejoint}

= kN

Rock point*

N_{c,Rd,rockpoint}

= kN

Pile element

N_c,Rd

= kN

*Capacity of rock point is determined for standard concrete C50/60

Tension resistance

Pile section

N_t,Rd,pile

= kN

Pile joint section

N_{t,Rd,pilejoint}

= kN

Pile element

N_t,Rd

= kN

Moment capacity at N = 0

Pile section

M_Rd,pile

= kNm

Pile joint section

M_Rd,pilejoint

= kNm

Pile element

M_Rd

= kNm

Buckling length at N_c,Rd = kN

l_cr

= m

Eccentricity on rock point

Ø_tip/10

Ø_tip/4

Dimension and type

Centrum pile dimension, b [mm]

200

235

250

270

300

350

400

Please select a pile width

Centrum rock point

50 mm tip

60 mm tip

Centrum pile type

Example invalid feedback text

Centrum pile joint type

No pile joints

Link to drawings

The following pile elements are held in stock (other piles upon request):

235 mm, Type 6, CPG-K2, CP-RP 235-25, 25 mm concrete cover, R1 Standard recipe
270 mm, Type 8, CPG-K4, CP-RP 270-25-60, 25 mm concrete cover, R1 Standard recipe

Characteristic unit load for evaluation of geotechnical bearing capacity

Unit load of pile section

Unit load of pile joint section

Unit load of rock point

Unit load of pile element, F_stuk

Nominal concrete cover, c [mm]

Concrete cover production tolerance, Δc_dev [mm]

5 (extended checking)

10 (standard)

Concrete recipe

R1 - Standard

R2 - Low vct

R3 - High strength

I2 - Infracement

Exposure class related to freeze/thaw attack

XF1

XF2

XF3

XF4

Class of lifespan

L100

L50

Exposure classes of pile element

The deflection resistance of normally consolidated cohesive soil is determined according to the Swedish Commission on Pile research Report 96:1 supplement 2.

Mean undrained shear strength

c_um

kPa

Value must be between 5 and 50. No decimals.

Conversion factor

Value must be between 0,60 and 1,10

Characteristic undrained shear strength

c_uk

kPa

Design undrained shear strength

c_ud

kPa

Long-term load percentage

a_lt

Value must be between 0 and 100

The deflection resistance of friction soil is determined according to the Swedish Commission on Pile Research report 96:1 supplement 2.

Soil type

Depth in soil

Value must be between 1 and 50

Below groundwater level

Above groundwater level

Relative firmness

Very low

Low

Medium high

High

Very high

Growth factor

n_h

MPa/m

GrowthFactorValidationText

Effective overburden pressure

σ'_v

kN/m²

Value must be between 10 and 500

Friction angle

φ_k

Value must be between 25 and 45

φ_d

Value must be between 25 and 45

Passive earth pressure coefficient

K_pk

EarthPressureCoValidationText

K_pd

EarthPressureCoValidationText

SLS

k_k·d

kPa

Value must be between 100 and 100000

q_yk

kPa

Value must be between 10 and 5000

y_yk/d

m/m

Value > 1 not allowed. Adjust your input.

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Centrum pile element

Calculation conditions

Soil strength

Calculating... Calculating...

Calculation results ULS

Calculating... Calculating...

Calculation results SLS

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