Download - Tugas 3 MPK
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SI3251
METODA PELAKSANAAN KONSTRUKSI
TUGAS 3
Amira Maryana
15012025
PROGRAM STUDI TEKNIK SIPIL
FAKULTAS TEKNIK SIPIL DAN LINGKUNGAN
INSTITUT TEKNOLOGI BANDUNG
2015
A. 1.CAT D11 TRACTOR
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Di!"#a$%i&
Crankcase capacity : 6.5
gallons
Power : 270 HP (diesel fuelengine)
.!." Price : #p
$.%&5.000.000'
ransport Cost : #p
2$7.500.000'
*ork + operating conditions :
a,erage
-al,age ,alue : #p
&5.650.000'
!perating /ours : &250
/oursyear
1nterest' a' 1nsurance'
-torage : &2.53
uel cost : #p %.200'litre
4uricant cost : #p
&&0.%00litreie for c/anging oil : &5
/ours
ilter cost : 253 luricant
cost
!perator cost : #p
65.500'/our
8et/od of depreciation :
straig/t line
9,erage producti,ity 220
c/r
seful life : years
Di#anya!an&
"erapa iaya produksi;
'a(a)an&
!*
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Owning cost=Rp720.831.945
1250=Rp576.666
!P@#91
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ire replaceent cost : #p
600.000&500 operating /ours
!perator cost : #p
76.500'/our
8et/od of depreciation :
straig/t line
#ental cost : #p
22&.500'/our
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Di#anya!an&
"reake,en operating /ours
'a(a)an&
!*
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"erapa laa kontraktor /arus enyipan /auler seelu diBual;
'a(a)an&
!P@#91
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AAV=( (#+1 ) Rp2.615 .700.000 )+( (#1 ) Rp392.255.000)
2#
Rp1.503 .977.500+Rp1.111.722.500
#
ITIS cost=12 (Rp1.503 .977.500+Rp1.111.722.500# )Rp180.477.300+
Rp133.406.700
#
Annual owning cost=Rp2.223.345 .000
# yr +(Rp180.477.300+Rp133.406.700# )
Rp180.477.300+Rp2.356 .751.700
#
!wning cost A #p %7&.06
Rp180.477.300+Rp2.356 .751.700
#
# =Rp871.069
2.356 .751.700
#2
+180.477.300
# =871.069
871.069#2180.477.300#2.356 .751.700=0
#=2.4758years=2.5years
B. 1.SCRAPER + *AULER
Di!"#a$%i&
*/eel tractor' operating 650 ao,e sea le,el
eperatur $5C
a. Decepatan $5 k/r. @pty weig/t : $0 tons
Di#anya!an&
a.
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>engan graFk' untuk kecepatan $7 k/r nilai ripull adala/
&.&000kg atau &. tons
>iasusikan' fullyloaded : 50 tons
Totalresistance=1.9
50 100=3.8
. ari interpolasi tael ?7' faktor koreksi untuk 5 dan 2&$2.?6
ft ao,e sea le,el adala/ 0.%55
Traction=Rolling Resistance (RR )9susikan total weig/t 50 tons
RR=3.8 50=1900 $g
RR=!orrection %actor !oe% RR total weight
1900=0.8955!oe% RR (67501000 )1900=29999.25 !oe% RR
!oe% RR=0.0633
B. 2.DUMP TRUCK + *AULER
Di!"#a$%i&
>ensity : 7.7 ton$
>istance : $00 ' down/ill $0
CoeEcient of traction : 0.$6
#olling resistance factor : $5 kgton
!wnweig/t : 27 ton' can carry a $0 tons atau ?.5 $
Power : &0 HP
Di#anya!an&
a. >apatkan ergerak pada kecepatan 25 k/r;. *eig/t distriution dri,ing w/eel saat 503 epty atau 553 fully
loaded
'a(a)an&
a. 503 epty
&seable power (traction )=0.36 (0.5272000 )
=9720 lb s
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A"ailable power=3751901
15.54=4584.9421 lb s
Rolling resistance=77.1927=2084.13 lb s
'rae resistance=1054000=5400lb s
Totalresistance=RR+'R=2084.13+5400=7484.13 lb s
Totalresistance (7484.13 lbs )>A"ailable power (4584.9421 lbs )
8aka' tidak dapat ergerak
. 553 fully loaded
&seable power ( traction )=0.36 (0.55 (27+30 )2000 )=22572 lbs
A"ailable power=3751901
15.54=4584.9421 lbs
Rolling resistance=77.19 (27+30 )=4399.83 lbs
'rae resistence=10 (54000+60000 )=11400lbsTotalresistance=RR+RR=4399.83+11400=15799.83 lbsTotalresistance (15799.83 lbs )>A"ailable power(4584.9421 lbs)8aka' tidak dapat ergerak
B. 3.,*ELL TRACTOR
Di!"#a$%i&
Power : $00 HP
8aiu speed : 5.75 k/r
a. @ngine operating 53 eEciency
=ear -peed (k/r)irst 5.75
-econd &0.?/ird &%.?ourt/ $2.5
. ractor weig/t : 2.2 ton-lope : G2.03
#olling resistance : $% kgton
Di#anya!an&
a. 8aiu ripull dari traktor. 8aiu eternal pull ole/ traktor
'a(a)an&
a. 8aiu ripull dari traktor
@EsiensiA53
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Rimpull=375 (Pe%%
spee (mph)
First gear=3753000.95
3.57=29936.97 lbs
Secon gear=
3753000.95
6.46 =16544.12 lbs
Thir gear=3753000.95
11.43=9350.39lbs
Fourth gear=3753000.95
20.19=5293.46 lbs
. 8aiu eternal pull ole/ traktorTotalresistance=RR+'R=2219.2+1168=3387.2 lbs)a*imum e*ternal pull=RimpullTRFirst 'ear=29936.973387.2=26549.77 lbsSecon 'ear=16544.123387.2=13156.92 lbs
Thir 'ear=9350.393387.2=5963.19 lbsFourth'ear=5293.463387.2=1906.26 lbs