10. Konstruksi Dasar Di Kamar Melolsin

7/24/2019 10. Konstruksi Dasar Di Kamar Melolsin

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Perhitungan konstruksi dasar di

Kamar MesinC.Bottom Construction in MachinerySpaces in Way of Main Propulsion Plant

BKI vol II edition 2009 Section 8: Bottom structure

Soemartojo W.A.Agustus 2012Jurusan Teknik Sistem Perkapalan

Fakultas Teknologi Kelautan ITS SurabaaTA 2012 ! 201"


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Section 8 :BottomStructureC. Single !ottom

1.1 T#e s$antlings o% &oors are to be 'etermine' a$$or'ingto A.1.2.1 %or t#e greatest span measure' in t#e engineroom. T#e se$tion mo'ulus is not to be less t#an(

2


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Single Bottom

"


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Single Bottom

1.2 T#e )eb 'ept# o% t#e plate &oors in )a o% t#eengine %oun'ation s#oul' be as large as possible

T#e 'ept# o% plate &oors $onne$te' to )eb %rames

s#all be similar to t#e 'ept# o% t#e longitu'inal%oun'ation gir'ers.

In t#e )a o% $rank $ase* t#e 'ept# s#all not be

less t#an 0*+ #.

T#e )eb t#i$kness is not to be less t#an(

,-mm


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"ngine Seating

+


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Single Bottom

1." T#e t#i$kness o% t#e longitu'inal %oun'ation gir'ersis to be 'etermine' a$$or'ing to ".2.1.

/

".2.1 T#e t#i$kness o% t#e longitu'inal gir'ers

aboe t#einner bottom is not to be less t#an(

P single engine output in -kW


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Single Bottom

1., o $entre gir'er nee' be 3tte' in )a o%longitu'inal %oun'ation gir'ers. Inter$ostal 'o$kingpro3les are to be 3tte' instea'.T#e se$tional area

o% t#e 'o$king pro3les is not to be less t#an(

4o$king pro3les are not re5uire' )#ere a bar keelis 3tte'. 6ra$kets $onne$ting t#e plate &oors to t#ebar keel are to be 3tte' on eit#er si'e o% t#e &oors.

7


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C.2 #ou!le Bottom $ in %a& o' the main (ro(ulsion (lant

2.2 Plate &oors

Plate &oors are to be 3tte' at eer %rame.T#e &oor t#i$kness a$$or'ing to 6./.2 is to be in$rease' b(

8

9inimum + per$ent* ma:imum 1+ per$entP single engine output in -kW

T#e t#i$kness o% t#e plate &oors belo) )eb%rames is to be in$rease' in a''ition to t#eaboe proisions. In t#is $ase t#e t#i$kness o%t#e plate &oors is not to be taken less t#an t#e)eb t#i$kness a$$or'ing to Se$tion ;* A./.2.1.


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)e! thickness according toSection 9* +.,.2.

;


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2.- Side girders under anengine 'oundation

T#e t#i$kness o% si'e gir'ers un'er anengine %oun'ation top plate inserte' into t#einner bottom is to be similar to t#e t#i$kness

o% si'e gir'ers aboe t#e inner bottoma$$or'ing to ".2.1 ( Longitudinal girders

10

P single engine out(ut in /


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Side girders under engine'oundation

11

Si'egir'ers


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1u!e oil sum( tank !elo%engine.

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1u!e oil sum(tank


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eight o' engine 'oundation

1"

3he (osition o' main engine de(end on the(osition o' the (ro(eller sha't a!ove the !aseline* it is determined !& the diameter o' the(ro(eller as %ell as the t&(e o' the gear !o4


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Side girders

Si'e gir'ers

Si'e gir'ers )it# t#i$kness o% ?longitu'inal gir'ers@

are to be 3tte' un'er t#e %oun'ation gir'ers in %ull#eig#t o% t#e 'ouble bottom.

W#ere t)o si'e gir'ers are 3tte' on eit#er si'e o% t#eengine* one ma be a #al%!#eig#t gir'er un'er t#e

inner bottom %or engines up to "000 kW.

)here t%o longitudinal girders are 5tted oneither side o' the engine* their thickness ma&!e reduced !& 6 mm. 7Section 8* C* -.2.2

1,


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al' height side girders

1+

3%o side girders are 5tted*one ma& !e a$ hal' height

side girder 'or engine u( to-000 k)

3%o sidegirders

"ngine'oundation engineseating 'oundationgirder

longitudinalgirder

1u!e oilsum(tank

al'heightsidegirders

Inner !ottom tank to(

1u!e oil

sum(tank


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3%o longitudinal giders are5tted

1/

)here t%o longitudinalgirders are 5tted* thethickness ma& !e reduced !&

6 mm


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-.2 1ongitudinal girders

T#e t#i$knes o% longitu'inal gir'ers aboet#e inner bottom is not to be less t#en(

17

P see 2.2 :

single engineout ut k)


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Side girders under 'oundationgirder

Si'e gir'ers

Si'e gir'ers un'er %oun'ation gir'ers are to be

e:ten'e' into a'ja$ent spa$es an' to be$onne$te' to t#e bottom stru$ture.

T#is e:tension aba%t an' %or)ar' o% t#e engineroom bulk#ea's s#all be t)o to %our %ramespa$ing i% pra$ti$able.

o $enter gir'er is re5uire' in )a o% t#e engineseating.

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Side girders under 'oundationgirder

1;

Plate

oor

+PBulkhead

";Bulkhead

M"

Side girderunder engine'oundation

"ngine'oundation

Inner !ottom

tank to(

Side girders are to !e e4tended and to !econnected to the !ottom structure* t%o or'our 'rame s(acing i' (ractica!le

+!a't+PB


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2.6 Inner !ottom

6et)een t#e %oun'ation gir'ers* t#e t#i$kness o% t#e inner bottomplating re5uire' a$$or'ing to 6.,.1. to be in$rease' b 2 mm.

T#e strengt#ene' plate is to be e:ten'e' beon' t#e engine seatingb t#ree to 3e %rame spa$ing.

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Inner !ottom strengtheningB.6. > 2 mm

21

"4tended

- ? @'rames(acing

- ? @'rames(acing

=oundationgirders

Inner !ottom strengthening!et%een 'oundation girders*

e4tended three to 5ve 'rame

Sidegirders

i i l d


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3%in engines cou(led to one(ro(eller sha't

22

W#ere t)in engines are 3tte'* a $ontinuous top plate is tobe arrange' in general i% t#e engines are $ouple' to onepropeller s#a%t

Inner!ottom

"ngine'oundatio

n

"ngine'oundation


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-. "ngine Seating 'or lo%s(eed engines

eneral ! T#e %ollo)ing rules appl to lo) spee'engines. Seating %or me'ium an' #ig# spee'engines as )ill be spe$iall $onsi'ere'.

T#e rigi'it o% t#e engine seating an' t#esurroun'ing bottom stru$ture must be a'e5uateto keep t#e 'e%ormations o% t#e sstem 'ue to

t#e loa's )it#in t#e permissible limits.

In spe$ial $ases* proo% o% 'e%ormations an'stresses ma be re5uire'.

2"


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"ngine Seating 'or lo% s(eedengines

T#e %oun'ation bolts %or %astening t#eengine at t#e seating s#all be spa$e' nomore t#an " x' B'iameter o% %oun'ationboltsC apart %rom t#e longitu'inal%oun'ation gir'er. BSe$tion 8* D.".1.,C

W#ere t#e 'istan$e o% t#e %oun'ationbolts %rom t#e longitu'inal %oun'ationgir'er is greater* proo% o% e5uialen$e isto be proi'e'. BSe$tion 8* D.".1.,C

2,


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"ngine Seating 'or lo% s(eedengines

2+

A-d

d"ngine'oundation

Bracket

d diametero''oundation!olts

"ngine'oundation


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".2.2 W#ere t)o longitu'inal gir'ers are 3tte' oneit#ersi'e o% t#e engine* t#eir t#i$kness re5uire'a$$or'ing to ".2.1 ma be re'u$e' b , mm

".2." T#e siEes o% t#e top plate B)i't# an't#i$knessC s#all be su$ient to attain e$ientatta$#ment an' seating o% t#e engine( Seating #eig#t an' tpe o% engine

A'e5uate transerse rigi'it.

T#e t#i$kness o% t#e top plate s#all appro:imatelbe e5ual to t#e 'iameter o% t#e 3tte'!in bolts.

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T#e $ross se$tional area o% t#e top plate is not to beless t#an(

W#ere t)in engines are 3tte'* a $ontinuous top plateis to be arrange' in general i% t#e engines are $ouple'to one propeller s#a%t. 28


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2;

A-d

d"ngine'oundation

Bracket

"ngine'oundation


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-.2 1ongitudinalgirders

T#e longitu'inal gir'ers o% t#eengine seating are to be supporte'

transersel b means o% )eb%rames or )ing bulk#ea's.

T#e s$antlings o% )eb %rames are tobe 'etermine' a$$or'ing to Se$tion;* A./.(

Web %rames in ma$#iner spa$es

"0


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Top plates are pre%erabl to be $onne$te' to

longitu'inal an' transerse gir'er t#i$ker t#anappro:imate 1+ mm b means o% 'ouble beel buttjoint.

"1

i ht ' i


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eight o' engine'oundation

"2


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;e'erences

S#ip Donstru$tion Sket$#es an'otes

Kemp an' Goung* Stan%or' 9aritime>on'on* 1;8,Peraturan 6iro Klasi3kasi In'onesia

Holume II*

10. Konstruksi Dasar Di Kamar Melolsin

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