Bsi bs en 12573 3 2000

/home/gencode/overflow/cen/w12573p3/125 1 676 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |[.]

Part 3: Design and calculation for single

skin rectangular tanks

This British Standard, having

been prepared under the

direction of the Sector

Committee for Materials and

Chemicals, was published under

the authority of the Standards

Committee and comes into effect

on 15 November 2000

 BSI 11-2000

ISBN 0 580 34919 5

Amendments issued since publication

National foreword

This British Standard is the official English language version of EN 12573-3:2000.The UK participation in its preparation was entrusted to Technical CommitteePRI/62, Static thermoplastic tanks, which has the responsibility to:

Ð aid enquirers to understand the text;

Ð present to the responsible European committee any enquiries on theinterpretation, or proposals for change, and keep the UK interests informed;

Ð monitor related international and European developments and promulgatethem in the UK

A list of organizations represented on this committee can be obtained on request toits secretary

Cross-references

The British Standards which implement international or European publicationsreferred to in this document may be found in the BSI Standards Catalogue under thesection entitled ªInternational Standards Correspondence Indexº, or by using theªFindº facility of the BSI Standards Electronic Catalogue

A British Standard does not purport to include all the necessary provisions of acontract Users of British Standards are responsible for their correct application

Compliance with a British Standard does not of itself confer immunity from legal obligations.

&(1PHPEHUVDUHERXQGWRFRPSO\ZLWKWKH&(1&(1(/(&,QWHUQDO5HJXODWLRQVZKLFKVWLSXODWHWKHFRQGLWLRQVIRUJLYLQJWKLV(XURSHDQ 6WDQGDUGWKHVWDWXVRIDQDWLRQDOVWDQGDUGZLWKRXWDQ\DOWHUDWLRQ8SWRGDWHOLVWVDQGELEOLRJUDSKLFDOUHIHUHQFHVFRQFHUQLQJVXFKQDWLRQDO VWDQGDUGVPD\EHREWDLQHGRQDSSOLFDWLRQWRWKH&HQWUDO6HFUHWDULDWRUWRDQ\&(1PHPEHU

7KLV(XURSHDQ6WDQGDUGH[LVWVLQWKUHHRIILFLDOYHUVLRQV(QJOLVK)UHQFK*HUPDQ $YHUVLRQLQDQ\RWKHUODQJXDJHPDGHE\WUDQVODWLRQ XQGHUWKHUHVSRQVLELOLW\RID&(1PHPEHULQWRLWVRZQODQJXDJHDQGQRWLILHGWRWKH&HQWUDO6HFUHWDULDWKDVWKHVDPHVWDWXVDVWKHRIILFLDO YHUVLRQV

&(1PHPEHUVDUHWKHQDWLRQDOVWDQGDUGVERGLHVRI$XVWULD%HOJLXP&]HFK5HSXEOLF'HQPDUN)LQODQG)UDQFH*HUPDQ\*UHHFH ,FHODQG,UHODQG,WDO\/X[HPERXUJ1HWKHUODQGV1RUZD\3RUWXJDO6SDLQ6ZHGHQ6ZLW]HUODQGDQG8QLWHG.LQJGRP

(8523($1 &200,77(( )25 67$1'$5',=$7,21

& 2 0 , 7 e  ( 8 5 2 3 e ( 1  ' (  1 2 5 0 $ / , 6 $ 7 , 2 1 ( 8 5 2 3 b, 6 &+ ( 6  2 0 , 7 ( (  ) h 5  12 5 0 8 1 *

&HQWUDO6HFUHWDULDWUXHGH6WDVVDUW%%UXVVHOV

‹&(1 $OOULJKWVRIH[SORLWDWLRQLQDQ\IRUPDQGE\DQ\PHDQVUHVHUYHG

ZRUOGZLGHIRU&(1QDWLRQDO0HPEHUV 5HI1R(1(

3DJH

Foreword 3

1 Scope 3

2 Normative references 4

3 Definitions, symbols and abbreviations 4

3.1 Definitions 4

3.2 Symbols and abbreviations 4

4 General considerations in design calculations 5

5 Unstiffened tanks sitting on a continuous flat rigid surface 6

5.1 General 6

5.2 Aspect ratio x/y < 0,5 7

5.3 Aspect ratio 0,5 ˆ x/y ˆ 4 7

5.4 Aspect ratio x/y > 4 8

6 Tanks with rim stiffening supported on a continuous flat rigid surface 8

6.1 Calculation of the skin thickness 8

6.2 Calculation of rim stiffeners 10

7 Tanks with intermediate horizontal stiffeners supported on a continuous flat rigid surface 11

7.1 General 11

7.2 Calculation of the minimum skin thickness 11

7.3 Calculation of the horizontal stiffeners 13

8 Tanks with cross-ribbed horizontal and vertical stiffeners supported on a continuous rigid surface 14

8.1 Calculation of the minimum skin thickness, base thickness and properties of horizontal stiffeners 14

8.2 Calculation of the properties of vertical stiffeners 14

9 Rectangular tanks with U-frame 15

9.1 General 15

9.2 Calculation of the skin thickness of the side walls 15

9.3 Determination of the tank base 15

9.4 Calculation of the U-frame stiffening 16

10 Determination of the tank cover 16

10.1 General 16

10.2 Freely supported tank cover 16

10.3 Fixed tank cover 17

10.4 Stiffened tank cover 19

Annex A (informative) Construction details for rectangular tanks 21

Annex B (informative) Special cases 30

Annex C (informative) A-deviations 32

Bibliography 33

7KLV(XURSHDQ6WDQGDUGKDVEHHQSUHSDUHGE\7HFKQLFDO&RPPLWWHH&(17&7KHUPRSODVWLFVWDWLFWDQNVWKH6HFUHWDULDWRIZKLFKLVKHOGE\%6,

7KLV(XURSHDQ6WDQGDUGVKDOOEHJLYHQWKHVWDWXVRIDQDWLRQDOVWDQGDUGHLWKHUE\SXEOLFDWLRQRIDQLGHQWLFDOWH[WRUE\HQGRUVHPHQWDWWKHODWHVWE\6HSWHPEHUDQGFRQIOLFWLQJQDWLRQDOVWDQGDUGVVKDOOEHZLWKGUDZQDWWKHODWHVWE\6HSWHPEHU

2YHUSUHVVXUH1PPEDU

/RZSUHVVXUH1PPEDU

3ODWHWKHRU\ZDVXVHGDVWKHEDVLVRIWKHFDOFXODWLRQLQWKLVGRFXPHQW5HIHUHQFHWRPHPEUDQHWKHRU\LVJLYHQLQ

$QQH[%

7KLV (XURSHDQ 6WDQGDUG LQFRUSRUDWHV E\ GDWHG RU XQGDWHG UHIHUHQFH SURYLVLRQV IURP RWKHU SXEOLFDWLRQV 7KHVHQRUPDWLYH UHIHUHQFHV DUH FLWHG DW WKH DSSURSULDWH SODFHV LQ WKH WH[W DQG WKH SXEOLFDWLRQV DUH OLVWHG KHUHDIWHU )RUGDWHG UHIHUHQFHV VXEVHTXHQW DPHQGPHQWV WR RU UHYLVLRQV RI DQ\ RI WKHVH SXEOLFDWLRQV DSSO\ WR WKLV (XURSHDQ6WDQGDUGRQO\ZKHQLQFRUSRUDWHGLQLWE\DPHQGPHQW RUUHYLVLRQ)RUXQGDWHGUHIHUHQFHVWKHODWHVW HGLWLRQRIWKHSXEOLFDWLRQUHIHUUHGWRDSSOLHV

S

DYHUDJHDUHDORDG

)LJXUH3ULQFLSDOGLVWULEXWLRQRIEHQGLQJPRPHQWVLQDWDQNZLWKULPVWLIIHQLQJ

7KHGHIOHFWLRQRIWKHULPVWLIIHQHUVVKDOOEHFDOFXODWHGDVDPHDQEHWZHHQDIUHHO\VXSSRUWHGI  DQGDIL[HGEHDPI  ZLWKDXQLIRUPDOO\GLVWULEXWHGORDG7KHULPVWLIIHQLQJWDNHVXSWKRIWKHZDOOORDGDVXQLIRUPDOO\GLVWULEXWHGORDG7RDOORZWKHULPVWLIIHQLQJWREHDVVXPHGDVDIL[HGVXSSRUWLWVGHIOHFWLRQVKDOOQRWEHJUHDWHUWKDQ

RIWKHOHQJWKRUGHSWK7KHVPDOOHUGLVWDQFHKDVWKHJUHDWHVWHIIHFW7KHGHIOHFWLRQRIWKHULPVWLIIHQHUVKDOOEHFDOFXODWHGDFFRUGLQJWRHTXDWLRQ 

7KHWKLFNQHVVRIWKHEDVHVKDOOEHRIVLPLODUPDJQLWXGHWRWKHDFWXDOWKLFNQHVVRIWKHVNLQ

&DOFXODWLRQRIWKHPLQLPXPVNLQWKLFNQHVV

*HQHUDO

7KHPHWKRGRIFDOFXODWLRQIRUWKHLQGLYLGXDOSDQHOVGHSHQGVXSRQWKHLUSRVLWLRQDQGWKHLUDVSHFWUDWLRV7KHIUHHSDQHOGHSWK\QQ  VKDOOEHVXEVWLWXWHGIRU\LQWKHHTXDWLRQ

&DOFXODWLRQIRUWKHWRSSDQHO

7KHHTXDWLRQVGHWDLOHGLQVKDOOEHXVHG,QWKLVFDVHWKHSUHVVXUHDWWKHVWLIIHQHULPPHGLDWHO\DGMDFHQWWRWKHULPVWLIIHQHU VKDOO EH VXEVWLWXWHG LQ WKH HTXDWLRQV IRU WKH VXUIDFH SUHVVXUH S  7KH GHSWK RI WKH WRS SDQHO VKDOO EHVXEVWLWXWHGIRUWKHRYHUDOOWDQNGHSWK\ 

SQQ