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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