Dpc

m,mean m,min

Mean/min measured resistance-= 4374 kN and-= 4271 kN

Characteristic resistance is Rck = min

RR m,mean m,min

Design resistance

Partial factors from Sets

Design resistance is Rcd

(R1A

vR4 j

v1.5 j v2847 j kN

Verification of compression resistance

Degree of utilization

Design is unacceptable if the degree of utilization is > 100%

Degree of utilization

Design is unacceptable if the degree of utilization is > 100%

Design Approach 2

Ignore the self-weight of pile

Characteristic total action Fck = Fgk + FQk = 2200 kN Partial factors from set A1: yg = 1.35 and yq = 1.5 Design total action is Fcd = yg Fgk + Yq FQk = 3075 kN

Characteristic resistance

Characteristic resistance is unchanged: Rck = 4271 kN Design resistance

Partial factors from sets R2: Yt = 1.1

Design resistance is Rcd =-= 3882 kN

Verification of compression resistance Degree of utilization Design is unacceptable if the degree of utilization is > 100%

Design Approach 3 Is not suitable for pile design

Design to UK National Annex to BS EN 1997-1

The UK National Annex changes both the resistance factors and the correlation factors that must be used to verify pile resistance. All other factors remain unchanged from their EN values.

Characteristic resistance

Correlation factor on mean measured resistance is Ç1 = 1.35 Correlation factor on minimum measured resistance is Ç2 = 1.08 For a pile group that can transfer load from weak to strong piles

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