Chapter 10 Design recommendations

8/8/2019 Chapter 10 Design recommendations

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D E S I G N R E CO M M EN D AT I ON S SheecEdit ion1Reg. N o .

C O N T E N T S

G E N E R A L P H I L O S O P H Y

S H I P S B E H A V I O U R A T S E A

G U I D I N G AND S U P P O R T I N G P R I N C I P L E S

S H I P T O S H O R E R A MP S - H I N G E F O R C E SS H I P T O S H O R E R A M PS - T O R S I O NS T R U C T U R E S W I TH O U T T O P P L A T E

E F F E C T I V E T O P P L A T E W I D TH

L O C A L S T I F F E N E R - U N I F O R M L O ADL O C A L S T I F F E N E R - W H E E L L O A DT R I P P I N G E R A C K E TS

F I T T I N G R AC K U P

L 0 P - D P A D S B E T W E E N H AT C H C O A F lI N G S AN D C O V E R SS T R A P S

P I N S

W H E E L S

HATCH COVER DESIGN RULES


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DESIGN RECOMMENDATIONS Shee r 10.1I Ed i t i o n 1 , HEIReg. No.

1 GENERAL PHILOSOPHY

1 , The l i g h t e s t s t r u c t u r e i s s el do m t h e c h e a p e s t .2 . T ry t o k e e p t h e am ou nt o f w e ld down, p a r t i c u l a r l ym a n u a l w e l d , i . e . c o r n e r , c r o s s i n g s , b r a c k e t s ,c u t o u t s e t c .3 . T ry t o ke e p t h e number o f i n t e g r a l p a r t s down.4 . T ry t o r e d u c e t h e num ber o f d i f f e r e n t p l a t e

t h i c k n e s s e s , a n g l e b a r s a nd f l a t b a r s n ee d ed .

CHECK LIST

1 . I s t k e s p a n / t o p p l a t e r a t i o c o r r e c t ?

2 . Are 2 1 1 b r a c k e t s n e c e s s a r y .3 . Are c u t o u t s a nd c r o s s i n g s c o r r e c t l y s ha pe d.4. I s i t e a s y t o make a l l w e l d s .5 . I s t ? e w e l d s i z e c o r r e c t .6 . I s i t e a s y t o p a i n t a n d b l a s t a l l s u r f a c e s .7 . A re r e i n f o r c e m e n t s b e h in d f i t t i n g s a de q u a t e

i n s i z e a nd s h a p e .


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DESIGN RECOMMENDATIONS S h e e tEd~t ion1Re g . No.

2 SHIPS BEHAV IOUR AT SEA

A s a c o ns eq ue nc e o f t h e f a c t t h a t a S h i p i s a moving s t r u c t u r es u b j e c t t o f o r c e s f r om w av es , c u r r e n t an d w in d, t h e S h i p a n da s s o c i a t e d e q u i p m e n t s u c h a s H at ch C o v e rs , Ro-Ro e q u ip m e nt e t cm us t b e d e s i g n a t e d t o w i t h s t a n d t h e s t a t i c and dynam ic f o r c e swh ich may o c c u r .The s i z e of t h e s e f o r c e s c a n e a s i l y b e f o u n d i n C l a s s i f i c a t i o nS o c i e t i e s R u l e Books a n d de pe nd m o s tl y on t h e S h i p s s i z e a ndt h e l o c a t i o n of t h e e q u ip me n t .The f o l l o w i n g f i g u r e s c a n b e u s ed a s a G u ide :

M = ( Ma ss o f c o n s i d e r e d e q ui p m en t + p o s s i b l e l o a d )L o n g i t u d i n a l F o r c e : 2 0 , 1 5 x MV e r t i c a l F o r c e a t Fwd. End (1 2 0 , 7 ) MV e r t i c a l F o r c e a t @ : (1 t 0 . 2 5 ) MT r a n s v e rs e F o r c e a t W.L. : 2 G,5MT r a n s v e rs e F o r c e a t u p pe r d e ck : 2 0 . 7 M

A c om pa ct f o l d i n g p a n e l l o a d e d w i t h 2 t i e r s o f 2 0 ' C o n t a i n e r s o f2 0 T / each , 5 r o w s . W h a t w i l l t h e t r a n s v e r s e a nd l o n g i t u d i n a lf o r c e s be o n t h e f i x a t i o n d e v ic e s ?A ROUGH ESTIMATE:-

LONG = 0 , 1 5 x 2 , 20 x 5 = 30 TONNES

VERTICAL MAX = 1 , 7 x 2 x 20 x 5 = 340 TONNES


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Kvaerner Ships Equipment AB Actiondate98.09

General rule for guiding principles

Page10.3.1DESI GN RECOMENDATIONS

Am V E R guide in such a way that DEF OR iiIAT ION of structure, or unevenOPE RA TIO N can cause the guides to JAIM.

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BIn cns s of cardscks. position e uides close to liftingpo ins.

'CTrh y 'l?


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Chapter 10 Design recommendations