EN ISO 12215-5-2008 en Small craft - Hull construction and scantlings - Part 5 Design pressures for monohulls design stresses scantlings determination (Incorporates Amendment A1 20.pdf

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1、BRITISH STANDARDBS EN ISO 12215-5:2008Small craft Hull construction and scantlings Part 5: Design pressures for monohulls, design stresses, scantlings determinationICS 47.080 BS EN ISO +A1:2014BS EN ISO 12215-5:2008+A1:2014ISBN 978 0 580 79380 6Amendments/corrigenda issued since publicationDate Comm

2、ents30 September 2014 Implementation of ISO amendment 1:2014 with CEN endorsement A1:2014. Annex ZA updatedThis British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 May 2008 The British Standards Institution 2014. Published by BSI Standards Limited

3、2014National forewordThis British Standard is the UK implementation of EN ISO 12215-5:2008. It is identical to ISO 12215-5:2008 incorporating amendment 1:2014. It supersedes BS EN ISO 12215-5:2008, which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the

4、 text by tags. Tags indicating changes to ISO text carry the number of the ISO amendment. For example, text altered by ISO amendment 1 is indicated by .The UK participation in its preparation was entrusted to Technical Committee GME/33, Small craft.A list of organizations represented on this subcomm

5、ittee can be obtained on request to its secretary.The publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.EUROPEAN STANDARDNORME EUROPENN

6、EEUROPISCHE NORMEN ISO 12215-5April 2008ICS 47.020.10; 47.080English VersionSmall craft - Hull construction and scantlings - Part 5: Designpressures for monohulls, design stresses, scantlingsdetermination (ISO 12215-5:2008)Petits navires - Construction de la coque et chantillonnage- Partie 5: Pressi

7、ons de conception pour monocoques,contraintes de conception, dtermination delchantillonnage (ISO 12215-5:2008)Kleine Wasserfahrzeuge - Rumpfbauweise undDimensionierung - Teil 5: Entwurfsdrcke frEinrumpffahrzeuge, Entwurfsspannungen, Ermittlung derDimensionierung (ISO 12215-5:2008)This European Stand

8、ard was approved by CEN on 28 December 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning s

9、uch nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language

10、 and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembou

11、rg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of

12、exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 12215-5:2008: EEN ISO 12215-5:2008+A1July 2014Foreword This document (EN ISO 12215-5:2008) has been prepared by Technical Committee ISO/TC 188 “Small craft“in collaboration with Technical Committee C

13、EN/SST01 “Shipbuilding and maritime structures” the secretariat of which isheld by CMC. This European Standard shall be given the status ofa national standard, either by publication of an identical text or by endorsement, at the latest by October 2008, and conflicting national standards shall be wit

14、hdrawn atthe latest by October 2008.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any orall such patent rights. This document has been prepared under a mandate giv

15、en to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). For relationship with EC Directive, see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the natio

16、nal standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, CzechRepublic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,Lithuania, Luxembourg, Malta, Netherlands, Norway, Pola

17、nd, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement noticeThe text of ISO 12215-5:2008 has been approved by CEN as a EN ISO 12215-5:2008 without anymodification. BS EN ISO 12215-5:2008BS EN ISO 12215-5:2008+A1:2014EN ISO 12215-5:2008+A1:2014EN IS

18、O 12215-5:2008/A1:2014 (E) 3 Foreword This document (EN ISO 12215-5:2008/A1:2014) has been prepared by Technical Committee ISO/TC 188 “Small craft” in collaboration with CCMC. This Amendment to the European Standard EN ISO 12215-5:2008 shall be given the status of a national standard, either by publ

19、ication of an identical text or by endorsement, at the latest by January 2015, and conflicting national standards shall be withdrawn at the latest by January 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC

20、 shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s)

21、, see informative Annex ZA, which is an integral part of this document. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denma

22、rk, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement not

23、ice The text of ISO 12215-5:2018/Amd 1:2014 has been approved by CEN as EN ISO 12215-5:2008/A1:2014 without any modification. Foreword to amendment A1Endorsement noticeiiiContents PageIntroduction.vi1Scope.12Normative references.13Terms and definitions.24Symbols.45General.66Dimensions, data and area

24、s76.1 Dimensionsand data76.2 Areas77Pressure adjusting factors97.1 General.97.2 Design category factor kDC97.3 Dynamic load factor nCG97.4 Longitudinal pressure distribution factor kL107.5Area pressure reduction factor kAR.117.6Hull side pressure reduction factor kZ127.7Superstructure and deckhouse

25、pressure reduction factor kSUP.137.8Light and stable sailingcraft pressure correcting factor for slamming kSLS.138Design pressures148.1Motor craft design pressure148.2Sailing craft design pressure168.3Watertight bulkheads and integral tank boundaries design pressure168.4 Design pressures for structu

26、ral components where kARwould beu 0,25.189Dimensions of panels and stiffeners199.1 Dimensions of plating panels199.2 Dimensions of stiffeners2310 Plating Scantling equations2510.1 Thickness adjustment factors for plating2510.2 FRP single-skin plating2810.3 Metal plating Aluminium alloyand steel2910.

27、4Laminated wood or plywood single-skinplating3010.5 FRP sandwich plating.3110.6 Single-skin plating minimum thickness.3511 Stiffening members requirements3611.1 General.3611.2 Properties adjustment factors for stiffeners3711.3 Design stresses for stiffeners.3711.4 Requirements for stiffeners made wi

28、th similar materials.3811.5 Requirements for stiffeners made with dissimilar materials.3911.6 Effective plating4011.7 Overall dimensions of stiffeners.4111.8 Structuralbulkheads4311.9 Structural support forsailing craft ballast keel.44BS EN ISO 12215-5:2008BS EN ISO 12215-5:2008+A1:2014ISO 12215-5:2

29、008+A1:2014iv 12 Owners manual.4412.1 General.4412.2 Normal modeof operation.4412.3 Possibility of outer skin damage.44Annex A (normative) Simplified method for scantling determination45Annex B (normative) Drop test for boats of 0,07(mLDC)2/3where ASis the totalprofile area of all sails that may be

30、set at one time when sailing close hauled, as defined in ISO 8666 and expressed in square metresNOTE In the rest of this part of ISO 12215, non-sailing craft are considered as motor craft. 3.4 second moment of areaIfor a homogeneous material, it is the sum of the component areas multiplied by the sq

31、uare of the distance from centre of area of each component area to the neutral axis, plus the second moment of area of each component area about anaxis passing through its own centroid, and is expressed in centimetres to the fourth or millimetres to the fourth NOTE The second moment of area is also

32、referred to in other documentation as the moment of inertia and for brevityas “second moment” within this part of ISO 12215. 3.5 section modulus SMfor a homogeneous material, it is the second moment of area divided by the distance to any point from theneutral axisat which the stress is to be calcula

33、ted and is expressed in cubic centimetres or cubicmillimetresNOTE The minimum section modulus is calculated to the furthest point from the neutral axis. 3.6 displacement craft craft whose maximum speed in flat water and mLDCconditions, declared byits manufacturer, is such thatWL5VL30, in degrees, V,

34、 formotor craft, the maximum speed in calm water declared bythe manufacturer, with the craft in mLDCconditions. This speed shall not be taken as 3,0, that value or the value from Equation (2) shall be used. CG0,17LDC0,5 Vnm= (2) In any case, nCGneed not be taken 7. NOTE2The limitation on nCGin this

35、paragraph is due to the limitation of speed by the crew to keep the slammingaccelerations within acceptable comfort and safety limits. The crew of “super sports” or racing boats accept a harder ridethan a family cruiser, but need special body support, shock damping seats or equipment to prevent inju

36、ry from high gs. 7.3.3 Dynamic load factor nCGfor sailing craft and displacement motor craftFor sailing craft, nCGis not used for pressure determination. It is only used in the calculation of kLfor whichpurpose the value of nCGshall be taken as 3. For motor craft where nCG, determined using Equation

37、 (1), is1 forWL0,6xLu (3) L1k = forWL0,6xLwhere nCGis determined in accordance with 7.3, but for the purposes of determination of kL, nCGshall notbe taken 6; WLxLis the position of the centre of the panel or middle of stiffener analysed proportional to LWL, where WLxL= 0 and 1 are respectively the a

38、ft end and fore end of LWL. where x is the longitudinal position of the centre of the panel or middle of stiffener forward ofaft end of LWLinmLDCconditions, in metres. The overhangs fore and aft shall have the same value of kLas their respective end of the waterline. BS EN ISO 12215-5:2008BS EN ISO

39、12215-5:2008+A1:2014ISO 12215-5:2008+A1:201411NOTE In the graph the only represented intermediate value of nCGbetween 3 and 6 is 4,5; for other intermediatevalues, kLshall be determinedeither by calculation according to Equation (3) or by interpolation in the graph. Figure 3 Longitudinal pressure di

40、stribution factor kL7.5Area pressure reduction factor kAR7.5.1 General The area pressure reduction factor kARtakes into account the variation of pressure loads due to panel orstiffener size. 0,15RLDCAR0,3D0,1kmkA= (4) where kRis the structural component and boat type factor: kR=1,0 for bottom side a

41、nd deck panels and stiffeners of planing motor craft operating inplaning mode; kR= 1,5 3 104 b for bottom side and deck panels of sailing craft, displacement motor craftand planing motor craft operating in displacement mode; 4Ru1210kl= for bottom side and deckstiffeners of sailing craft, displacemen

42、t motor craftand planing motor craft operating in displacement mode; mLDCis the loaded displacement mass defined in 3.2, in kilograms;BS EN ISO 12215-5:2008BS EN ISO 12215-5:2008+A1:2014ISO 12215-5:2008+A1:201412 ADis the design area, in square metres: ()6D10Alb= for plating, but shall not be taken

43、262,510b ; ()6Du10Als= for stiffeners but need not be taken 1. 7.5.3 Minimum values of kARkARshall not be taken at less than the values given in Table 3. Table 3 M inimum values of kARSide and bottom sandwich panels aDesign categorySide and bottom single-skin panels and stiffeners Deck and superstru

44、ctures sandwich and single-skin panels and stiffeners WL0,4xLuWL0,40,6xL800 mm above deck and upper tiers 0,35 Walking area Upper tiers aMinimum deck pressure 5 kN/m3Non-walkingarea aElements not exposed to weather shall be considered as upper tiers.7.8Light and stable sailing craft pressure correct

45、ing factorfor slamming kSLSThe light and stable sailing craft pressure correcting factor kSLStakes into account higher slamming pressures encountered on light and stable sailing craft when sailing upwind (i.e at an angle of up to 90 off true wind). Itis defined below. In design category C and D: kSL

46、S= 1 In design categoryA and B: kSLS= 1 if3WLLDC5mL0,50,5MAX60WLSLS0,33LDC10GZ Lkm60, with all stability-increasing devices such as canting keels orwater ballast at their most effective position, in fully loadedcondition, measured in metres. If the maximum righting lever occurs at a heel angle 60, t

47、he value at 60 shall be taken. The crew shall be considered in upwind hiking position in the calculation of the above GZMAX 60.BS EN ISO 12215-5:2008BS EN ISO 12215-5:2008+A1:2014ISO 12215-5:2008+A1:201414 8 Design pressures 8.1Motor craft design pressure 8.1.1 General The bottom pressure ofmotorcra

48、ft shall be the greater of (see NOTE 1) the displacement mode bottom pressure PBMDdefined in 8.1.2 or the planing mode bottom pressure PBMPdefined in 8.1.3. For motorcraft of design categories A and B, the side pressure shall be the greater of (see NOTE 3) the displacement mode side pressure PSMDdef

49、ined in 8.1.4 or the planing mode side pressure PSMPdefined in 8.1.5.Formotorcraft of design categoriesC and D, the side pressure shall be the one corresponding to planing ordisplacement mode: the “mode” to consider is the one where the bottom pressure, planing or displacement isthe greater (see NOTE 4). NOTE1The reason behind this double requirement is that, in rough seas, craft th