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[NTRODUCTION
hammer
IS
As
Dr.
The initial
safe safety ty fact factor ors. s. dynamic
In th
resu result lt
rs in
ri
re
il in
ty and
1950 1950's 's
developed
or esti estima mati ting ng capa capa it
CURR CURREN EN PROC PROCED EDUR URES ES MEASUREMENT
an
driv driv abil abilit ity. y.
FOR
1975,
ns
nc
ng
is often
ob em
....
Figure
W in d w s P D
ng
mm me DA ng ne
m.
in
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w h c h re usua ly nd ng n-
is o f e n
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1996).
al.
et
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which As a n a l e rn a ti v
PDA.
by
wn
m in u at
me
ng
nd
Modern
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wi
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equipment, ns pi
to
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th
nt
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nt
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ng
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If problems
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AL
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AM
TESTING
me
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ng
mp
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n am i
AL
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mp
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the
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328
re ne
nn
DA
ne
site practicall Why
instantaneously.
in
in improved
resistance available.
32
concern.
]0
fills
than 10
2,5
restrike
driven
US
PRACTICE
IS
to
to refusal.
their
transrnrssion
iterativel
investigated
If specified.
33
it
ra
te in
ts Pile Foundations"(ASCE
performed, In
Building Co
me
is most re en revision).
rm
(me)
ri
re
1n
in
the ta
le te te
to
To perform
331
the
at
by
in
th
drum
impl
(Beim
1998).
me hanica
evaluated.
release)
CONCLUSIONS
full
PDA with subsequent
capacity
value sufficient
to
In
If
full soil resistance
fa ilitat
completi
th
ou dation .5
an
activated
an REFERENCES Beim,
WORLDW1D
esta lish
lo al
J., G r
C.
PRACTICE
ractic
10
D. .• Proceedings. deep
lo
io
foun dations.
te in
Austria.
As ociates.
USA
Inc.
report. G.
nm
Cleveland F.
art. first Proceedings. internationa conference on th applicatio stresswave theory to piles. Stockholm. Sweden
installation;
((lh Inte nattonal Co fe ence Experience, Proceedings. ic ti Theory 10 Piles. on Stress-Wave Orla do lorida 33
ussein
M. Liki s, G., te
ha
Orlando, Florida, USA. Superp sition
or evaluating
st es -w ve theo
L ik in s G . . R au s h c
il
capacity
Proceedings.
to piles. Sao Paulo, Brazil nk n, M. Thcndean. .,
wave theory In piles, rlan o, lorida Rausche. F. Goble, Likins, de mi ti pi le capacity. geotechntca engmeenng.
SA.. 19)15. Dvnami S C i: : J 01 m 1 C I o f
Other Referenced Standards testin
of piles. Ole
foundations, ASCE 20-96. US Army Corps of Engineers, 1993. si fo ndatio s, nginee in manual (E 110- -29(6)
two volumes. ic ti Officials, "AASHTO" Designation
highwa
298-93. ti
1992. International
1993.
ta
io
bridges, (Sixteenth edition)
driven pile foundation esig
ti
pecification
(Sec nd Edition) fo driven bearin
piles.
Building Code 20UOSection J807.2.K.3
33