Download - BORED Pile and Pile Cap Design
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Prepared By
Mohamad Shakri bin Mohmad Shariff
2009106705
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Proposed by Kementerian Pengajian inggi
Ma!aysia to "onstr#"t a Komp!eks $PPP and
Makma! Penye!idikan Berp#sat %&esear"h
'aboratory (enter) at *ni+ersity Ma!aya, K#a!a
'#mp#r-
. soi! in+estigation programme "onsists of 7
boreho!es ha+e been s#nk /ith a!! the
asso"iated dist#rbed and #ndist#rbed
samp!ings and asso"iated !aboratory tests
5 ma"kintosh probing and 5 hand a#ger ho!es
been "arried o#t by Messrs K#mp#!an $kram
Sdb Bhd %$K&.M)-
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Geological Map of the Project
Proposed Site
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rom the eo!ogi"a! map, the site may be in geo!ogi"a! formations, /hi"h are granite,phy!!ite and !imestone-
he phy!!ite formation may "onsist of state,sha!e and sandstone-
By site +isit, the area most !ike!y /ithin the"arbonifero#s age phy!!ite, s!ate, sha!e and
sandstone area-
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he gro#nd !e+e! at proje"t site rangefrom &' 31-4 to &' 52--
he p#rposed !e+e! is aro#nd &' 31-4 -
he s!ope /i!! "#t to standardie of !e+e!- or the drainage, perimeter drainage
eist aro#nd the area and a!so inside thebo#ndary a""ording the staggered stages
of the eisting "ar park-
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$*& .1 8 S$' P&$' .(&SS B&:' B:1;B:3
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$*& .2 8 S$' P&$' .(&SS B&:' B:5;B:7
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$*& . 8 S$' P&$' .(&SS B&:' B:1;B:3
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he dri!!ing of boreho!es /as terminated after a minim#m of-0m of "ontin#o#s ro"k "oring or 5 time SP +a!#es ? 50b!o/s
Based on boreho!e res#!ts, the s#bsoi! main!y "onsist of sandyS$'-
he standard Penetration test had been p!ot based on 5boreho!es %B: 1 @ B: 5) /hi"h are abo#t the same !e+e!-
he soi! !ayer and parameters had been ana!ysis and design basedon S$ res#!t-
(hemi"a! est, .tterberg 'imit est :ydrometer .na!ysis are
eamp!e tests that had been "ond#"ted- he si!t basi"a!!y ha+e !iA#id !imit aro#nd 25 to 62- si!t in B: 5
indi"ated +ery high !iA#id !imit as high as 62-
here /as no ro"k en"o#ntered in a!! the boreho!es /hi"h /ereterminated /ithin depth of 0 meter from the eisting gro#nd!e+e!-
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Prepared By
eh Maisara Binti Mohd :assan
2009762251
=or .iyatimah Binti .bd#! M#ta!ib
200990599
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'arge iameter (ast;$n $n;Sit# Pi!es %Bored
Pi!es)
Sie 8 350mm to 2m
%*p to -0m for spe"ia! "ase) 'engths 8 Caries
Str#"t#ra! (apa"ity 8 40on to 2,00ons %a!!
b#i!dings or massi+e ind#stria! "omp!ees)
(on"rete rade 8 20MPa to 5MPa %remie)
Doints 8 =one
$nsta!!ation Method 8 ri!! then (ast;$n;Sit#
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.ia! 'oad (apa"ity(on"rete, (" 8 0-25 f"#
."
Stee! , S" 8 175 .s
ota!8 (" E ."/here,
(on"rete strength, f"# 8 5=FmmG
(on"rete area, ." 8 %h h) @ .s
Pi!e sie 8 h h
Pi!e =S=o of Pi!e, = 8 .pp!ied 'oad, Papp Sing!e Pi!e (apa"ity,
H a!!
Skin ri"tion
% k=FmG )
(!ay F Si!t F Sand 8 2-5 .+erage
SP, =
ri"tiona! &esistan"e
% k=FmG )Hs 8 I p J' f
/here,
Perimeter, p 8
epth, '
Skin fri"tion, f
Point Bearing (apa"ity
% k=FmG )
H p 8 .p Ap/here,
(ross;se"tion .rea, .p
Ap 8 50 .+erage SP, =
.!!o/ab!e 'oad;Bearing(apa"ity % k= )
Ha!! 8 %Hs E Hp )F S
/here,
a"tor of safety, S
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amp!e
Pi!e ata
Soi! Profi!e
for B:7
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(ross;se"tion of
bored pi!e
P!an
+ie/
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Bored pi!ing is
#sed to remo+e
the soi! and
ro"k-
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or "ohesion!ess
soi!s s#"h as sands,
gra+e!s, si!ts, pi!ebore ho!e m#st be
s#pported #sing
stee! "asing or
stabi!iing m#ds
s#"h as bentonite
s#spension
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&einfor"ement bar
/i!! be p#t into
the bore ho!e
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(on"rete /i!! be
po#red into the
bore ho!e
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Prepared By
Lan Mohd .ri Bin Lan Mohd #bir
200991945
Khair#! .mri Bin San#si
2009106705
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Pi!e "ap defined as a "on"rete b!o"k "ast onthe head of a pi!e, or a gro#p of pi!es totransmit !oad from str#"t#re to the pi!e-
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Pi!e "ap /i!! !atera!!y stabi!ie indi+id#a!pi!es th#s in"reasing o+era!! stabi!ity of thegro#p-
Pi!e "ap m#st be rigid to transfer !oads from"o!#mn to the pi!es-
/o methods of design pi!e "apsNr#ss .na!ogy Method
Beam heory Method
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Pi!e "ap treated as an in+erted "anti!e+erbeam-
esign for the #s#a! "onditions of bending
and shear- .pp!ied to !arger gro#ps of pi!es-
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Based on tr#ss theory-
'oad from "o!#mn transmit to pi!es bytriang#!ar tr#ss a"tion-
(on"rete take as "ompressi+e members andstee! rebar as tensi!e members-
'imited #p to fi!e pi!es-
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etermine sie of pi!e "ap based on pi!espa"ing of d and edge distan"e bet/een150O250mm-
Pi!e "ap depth to be ass#med as fo!!o/sN
Lorking !oad of pi!e norma!!y based ongeote"hni"a! "apa"ity be"a#se str#"t#re"apa"ity is higher-
Pilesize
150 200 300 350 450 600 750
epth 350 600 700 900 1000 1300 1400
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etermine rebar by Beam Method or r#ssMethod-
(he"king for shear at "o!#mn fa"e and"riti"a! se"tion %20 or 1F5 of pi!e diameter)-.!!o/ shear enhan"ement-
(he"king for p#n"hing shear if pi!e spa"ingmore than d%diameter of pi!e)-
(he"king detai!ing reA#irements s#"h asan"horage, bar spa"ing and "o+er-
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P$' (.P S$=
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Based on BS 4110
esign "on"ept Beam heory Method
Strength of "on"rete, f"#? 0=Fmm2
Strength of reinf-, fy ? 360 =Fmm2- Min- "o+er to main reinf-, " ? 50mm
(o!#mn ser+i"e !oad, ? 1660 K=
(o!#mn sie ? 300mm 300mm
Bored pi!e diameter ? 600mm
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Min- "ap design %!ength)
? 2%to!eran"e of pi!e) E bored pi!e diameter
? 150mm E 600mm
? 750mm say #se 1000mm-
Min- "ap design %breadth)
? bored pi!e diameter E 2%to!eran"e of pi!e)
? 600mm E 150mm
? 750mm say #se 1000mm-
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(he"k !ength to determine min- depthN
' ? 2d%diameter of bored pi!e) E 100mm
? 2 %600mm) E 100mm
? 100mm say 1500 mmr /e "an #se ab!e Pi!e (ap epth depends on
Sie of Pi!esN
So #se 1300mm for 600mm bored pi!ediameter-
Pile size 150 200 300 350 450 600 750
epth 350 600 700 900 1000 1300 1400
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:en"e, adopt sing!e bored;pi!e "ap sie
? 1000mm 1000mm 1300mm
ffe"ti+e depthN%ass- dia- of bar ? 25mm)
? 1300mm @ 75mm ; 25mm? 100mm
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Main bar ? 0-15 bd
? 0-15 %1000)%100)
? 1950 mm2
Pro+ide 625% 2950 mm2 Q 1950 mm2) Pro+ide simi!ar bar for both /ays 625 and
tie bars for 16-
Pro+ide anti;"ra"k bar at top of pi!e "ap for
more than 0-9m ? 0-1 bh? 0-1 %1000)%1300)
? 1420mm2
Pro+ide 625% 2950 mm2 Q 1420 mm2)
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etai!ingN
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etai!ingN
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P$' (.P S$=
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etai!ingN
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etai!ingN
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BH 2
BH 3
BH 4
BH 5
BH 1
BH 7
BH 6
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. +ery good soi! /ere fo#nd at approimate!y7-5 m from gro#nd !e+e! for B:1, B:2, B:and B:3-
. bored pi!e system /ere adopted to "aterfor the !arge "o!#mn !oad and estimatedsha!!o/ penetration for pre"ast pi!e-
Bored pi!e /ith sies +arying from 500mmdia- to 750mm dia- /ere adopted in thiseer"ise-
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