8/15/2019 PILE CAPACITY IN KHULNA SUB-SOIL
1/2
2nd I nternational C onference on
C ivil E ngineering for
S ustainable Development (ICCESD-2014 )
PILE CAPACITY IN KHULNA SUB-SOIL
Muhaimenul Alam Fiaz1*, Maum Shai!h" an# M#$ Ke%ama&
Ali M'lla(
1Undergraduate Student Department of Civil Engineering !"ulna
Universit# of Engineering and $ec"nolog#
!"ulna-%20& 'anglades" e-mail
mmfia)0*+gmail,com2 ecturer Department of Civil Engineering
!"ulna Universit# of Engineering . $ec"nolog#
!"ulna-%20& 'anglades"e-mail
masum/uetce001102+gmail,com& rofessor Department of Civil
Engineering !"ulna Universit# of Engineering . $ec"nolog#
!"ulna-%20& 'anglades" e-mail
/molla+ce,/uet,ac,bd
1$ In&%'#u)&i'n
Khulna City is situated on southern region of Bangladesh. The
soil in this region is formed by the alluvialdeposits from
different rivers (Rupsha, Vairab etc.). This region is also covered
by deep forest of undarban.!ue to tectonic forces at different
times in the past, these deep forests "ere buried underneath. #or
thesereasons, the soil is very soft, compressible having organic
matter "ith lo" bearing capacity as "ell as pile
capacity ($olla and $ali%, &'').
Khulna City is epanding "ith large development pro*ects
including construction of high rise buildings, bridgesand overhead
"ater tan%s etc. ince the bearing capacity of the sub+ soil of
Khulna is very lo", pile foundationis used for the construction of
high rise buildings and other important structures. #or most of the
pro*ects other than a large pro*ect, the o"ner does not li%e
to bear the cost of pile load test .n such cases the pile
capacity
obtained by conventional method can be used for the design of
pile foundation confidently if any published paper is
available on pile capacity of Khulna sub+soil. -nfortunately, such
published paper is not available tillno". Therefore, it is
necessary to publish such a paper.The main ob*ectives of this study
"ere to determine the pile capacity of Khulna sub+soil by
Conventional method and to compare "ith the values obtained by pile
loadtest.
"$ Me&h'#'l'+
n this study pile capacity "as determined at fourteen
sites. #or each site pile capacity at different boreholes"as
determined and by averaging the pile capacities of all the
boreholes the average pile capacity of that site"as obtained.
#inally averaging the pile capacities of all the sites the average
pile capacity in Khulna sub+soil
"as obtained. Then a graphical comparison of ile capacity
obtained by conventional method and pile load test"as made for
different diameter piles.
($ eul& an# i)ui'n
Table+&/ 0verage -ltimate ile Capacity of re+cast ile in
Khulna City by Conventional $ethod
1ength of the
ile(ft)
0verage -ltimate ile Capacity by Conventional $ethod(K2)
!ia(&34) !ia(&54) !ia(364)67 8&.7
&&58.8& &57.35
68 85'.83 &379.9: &'3:.66
87 ::7.6' &9&'.9' 3&6:.7
:7 ::5.83 &983.'8 336&.&8
7 95.: &8&6.67 368:.57
:' CC;!+37&6
