
49
Example: Furukawa F19 hydraulic hammer, pile RRs115/8, piling class PTL2, pile length 10
m
.
Piles have two R
d
values: 535
kN
and 560
kN
.
The end-of-driving settlement corresponding to R
d
value 535
kN
given in the table is 32
mm
/30
s
.
The R
d
value 560
kN
is converted to a geotechnical ultimate resistance (R
c
) as follows: 1.764 * 560
kN
= 988
kN
. Based
on the end-of-driving graph, the end-of-driving settlement is about 16
mm
/30
s
.
10
PTL1
100
20
95
30
77
10
PTL2
32
20
17
30
5
10
PTL2
<2 (1045)*
20
<2 (990)*
30
<2 (955)*
10
PTL3
<2 (1045)*
20
<2 (990)*
30
<2 (955)*
10
PTL3
<2 (1045)*
20
<2 (990)*
30
<2 (955)*
793
450
955
535
1058
860
1190
661
1322
749
Hammer efficiency 80%
Pile length
[m]
Piling class
<2 (xxx)* = mobilised geotechnical resistance xxx kN when
settlement <2mm/30s
Settlement
R
c
[kN]R
R
d
[kN]
Pile length L = 10m
Pile length L = 20m
Pile length L = 30m
Settlement