SIST EN ISO 12215-10:2021

SLOVENSKI STANDARD
oSIST prEN ISO 12215-10:2018
01-oktober-2018
Mala plovila - Konstrukcija trupa in zahtevane lastnosti - 10. del: Obremenitve in
pritrditve ladijske opreme na jadrnici (ISO/DIS 12215-10:2018)
Small craft - Hull construction and scantlings - Part 10: Rig loads and rig attachment in
sailing craft (ISO/DIS 12215-10:2018)
Kleine Wasserfahrzeuge - Rumpfbauweise und Dimensionierung - Teil 10:
Takelagelasten und Takelagezubehör von Segelbooten (ISO/DIS 12215-10:2018)
Petit navires - Contruction de la coque et échantillonnage - Partie 10: Charges dans le
gréement et points d'attache du gréement dans les bateaux à voiles (ISO/DIS 12215-
10:2018)
Ta slovenski standard je istoveten z: prEN ISO 12215-10
ICS:
47.020.10 Ladijski trupi in njihovi Hulls and their structure
konstrukcijski elementi elements
47.080 ýROQL Small craft
oSIST prEN ISO 12215-10:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 12215-10:2018

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oSIST prEN ISO 12215-10:2018
DRAFT INTERNATIONAL STANDARD
ISO/DIS 12215-10
ISO/TC 188 Secretariat: SIS
Voting begins on: Voting terminates on:
2018-07-30 2018-10-22
Small craft — Hull construction and scantlings —
Part 10:
Rig loads and rig attachment in sailing craft
Petit navires — Contruction de la coque et échantillonnage —
Partie 10: Charges dans le gréement et points d'attache du gréement dans les bateaux à voiles
ICS: 47.080
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 12215-10:2018(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2018

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oSIST prEN ISO 12215-10:2018
ISO/DIS 12215-10:2018(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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Email: copyright@iso.org
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Published in Switzerland
ii © ISO 2018 – All rights reserved

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oSIST prEN ISO 12215-10:2018
ISO/DIS 12215-10:2018(E)

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Purpose and application of the document . 3
5.1 Purpose of the document . 3
5.2 The simplified method . 4
5.3 The developed method . 4
6 Design stresses . 5
6.1 General . 5
6.2 Design load vs Safety factor . 7
7 Developed method: general assessments, design moment . 8
7.1 General . 8
7.2 Design moment: righting or heeling . 9
7.2.1 Preliminary . 9
7.2.2 Principle of design . 9
7.2.3 Multihulls and form stable sailing craft with reduced sails .11
7.2.4 Downwind longitudinal force F and nose trimming moment HM ,
DOWN DOW
running under spinnaker alone — "Normal" (S 6) or "Exceptional" (S 8) .11
c c
7.2.5 Maximum righting moment RM , exceptional case, reaching under
MAX
spinnaker .11
7.2.6 Heeling force F and heeling moment HM while broaching
BROACH BROACH
under spinnaker, exceptional case .12
7.2.7 Minimum sail configuration and Righting / Heeling moment to be analysed .12
7.3 Rig dimensions, and default values for areas, forces and points of application .13
7.4 Wing masts .17
7.5 Resultant forces in sails. .18
8 Loads in rigging elements .19
8.1 Preliminary .19
8.2 Force in forestay, inner forestay, mainsail leech and on halyards .19
8.2.1 General.19
8.2.2 Force in forestay, inner forestay, mainsail leech and on halyards connected
with Sag .
MS 20
8.2.3 Force in forestay to balance the longitudinal component of forces from aft
set shrouds, fixed/running backstays, mainsail leech .20
8.3 Force in backstay, running backstays, or equivalent .20
8.3.1 General.20
8.3.2 Fractional rig with fixed backstay, no running backstay and aft angled
spreaders .21
8.3.3 Case of rigs without fixed or running backstay .21
8.4 Load in all other rig elements .23
8.4.1 General.23
8.5 Example of rig load calculation .23
9 Structural components to be assessed .24
10 Rig attachment calculation — Developed method .24
10.1 Mast step and its connection to the craft's structure .24
10.2 Chainplates and their connections to the craft's structure.24
10.3 Design details of chainplates and their connection to the structure .25
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10.3.1 General.25
10.3.2 Wrapped /strapped FRP chainplates .25
11 Calculation methods .26
11.1 General .26
11.2 General guidance for assessment by 3-D numerical procedures .26
11.2.1 Material properties .26
11.2.2 Boundary assumptions .26
11.2.3 Load application .26
11.2.4 Model idealisation .26
11.3 Assessment by ‘Strength of Materials’ based methods .27
11.3.1 Limitations .27
12 Compliance .27
13 Information in the owner's manual .28
14 Information to the boat builder .28
Annex A (normative) Application declaration of ISO 12215-10 .29
Annex B (Informative) Information on metal and bolts .30
Annex C (normative) Simplified "Established practice" mast step calculation .34
Annex D (normative) Simplified "Established practice" chainplate calculation .42
Annex E (informative) Simplified "Established practice" calculation of transverse rig elements .61
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2013/53/EU aimed to be covered .67
Bibliography .68
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oSIST prEN ISO 12215-10:2018
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Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO's adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.
.The committee responsible for this document is ISO/TC 188, Small craft, together with CEN/BT/WG 69,
Small craft.
th
This document is the 10 part of ISO 12215. A list of all parts in the ISO 12215- series can be found on
the ISO website.
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oSIST prEN ISO 12215-10:2018
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Introduction
The reason underlying the preparation of ISO 12215- series is that scantlings rules and recommended
practices for small craft differ considerably, thus limiting the general worldwide acceptability of craft.
This document determines the loads and design stresses on rig of sailing small craft and on the
elements transmitting these loads to the rest of the structure (chainplates, mast step, etc.). It also gives,
in Annexes, "established practice" methods for determination of mast step or chainplates, but other
engineering methods may be used provided the design loads and design stresses are respected. This
document has been set towards the minimal requirements of the current practice.
The dimensioning according to this document is regarded as reflecting current practice, provided
the craft is correctly handled in the sense of good seamanship and equipped and operated at a speed
appropriate to the prevailing sea state.
This document is not a design standard and designers/builders are strongly cautioned from attempting
to design craft such that nearly all structural components only just comply.
This document only considers the loads exerted when sailing. Any loads that may result from other
situations are not considered in this document. The connection between the rig attachment and the
structure is required to be stronger than the rig attachment itself. It is therefore considered that
unforeseen overload will not entail its detachment from the structure, and that the watertight integrity
will be maintained.
Like the other parts of ISO 12215, this document was developed to assess the structure of recreational
craft up to 24 m L , but it may also be used for sailing craft of greater length and up to 24 m Load line
H
length (See Note in the scope).
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oSIST prEN ISO 12215-10:2018
DRAFT INTERNATIONAL STANDARD ISO/DIS 12215-10:2018(E)
Small craft — Hull construction and scantlings —
Part 10:
Rig loads and rig attachment in sailing craft
1 Scope
This part of ISO 12215 applies to the determination of:
— the loads in rig elements, and
— the load and scantlings of rig attachments and mast step,
on monohull and multihull sailing craft.
This document is not planned to be applicable to racing craft designed only for professional racing.
The scope of ISO 12215 was initially developed for craft below 24 m hull length L , but it may be applied
H
for craft up to 24 m load line length (see Note) and beyond, with the necessary critical mind.
Scantlings derived from this International Standard are primarily intended to apply to recreational
craft, including charter vessels.
2
Throughout this document, and unless otherwise specified, dimensions are in (m), Areas in (m ),
2
masses in kg, forces in (N), moments in (Nm), stresses and elastic modulus in (1N / mm = 1 Mpa).
Unless otherwise stated, the craft shall be assessed in m condition.
LDC
NOTE The load line length is defined in the OMI "International Load Lines Convention 1966/2005", it may
be larger than LH for craft with overhangs. This length also sets up, at 24 m, the lower limit of several IMO
conventions.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 8666, Small craft — Principal data
ISO 12215-5:2018, Small craft — Hull construction and scantlings Part 5: Design pressures for monohulls,
design stress, scantlings determination
ISISO 12215- 6 Small craft Hull construction-Scantlings —Part 6: Structural arrangements and details
ISO 12215-7, Small craft Hull construction-Scantlings —Part 7:Multihulls
ISO 12215-8, Small craft — Hull construction and scantlings — Part 8: Rudders
ISO 12217-2, Small craft — Stability and buoyancy assessment and categorization — Part 2: Sailing boats
of hull length greater than or equal to 6 m
3 Terms and definitions
For the purposes of this part of ISO 12215, the following terms and definitions apply.
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oSIST prEN ISO 12215-10:2018
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3.1
design categories
description of the sea and wind conditions for which a boat is assessed to be suitable
Note 1 to entry: The characteristics for the different design categories are in line with the European Recreational
Craft Directive 2013/53/EU.
3.2
loaded displacement mass
m
LDC
mass of the craft, including all appendages, when in the fully loaded ready for use condition as defined
in ISO 12217
3.3
sailing craft
craft for which the primary means of propulsion is wind power, as defined in ISO 12217
Note 1 to entry: In ISO 12215, non-sailing craft are considered as motor craft.
3.4
monohull
craft with only one hull
3.5
multihull
craft with two or more hulls with a connecting wet deck/platform or beams above the loaded waterline,
as opposed to a tunnel boat or scow
3.6
mast step
element fitted at the bottom of the mast that supports the mast compression and transmits it to the rest
of the structure
3.7
pillar
compression post
in a deck stepped rig, element that transmits the mast compression to the rest of the structure
3.8
chainplate
rig attachment
component(s) to which the rig elements are attached and that transmit their load to the rest of the
structure, this includes tie rods, where relevant
EXAMPLE Metal chainplate (see Annex D).
3.9
connection of mast step, pillar or chainplate to the structure
all elements or group of elements connecting the rig attachment to the structure of the craft. Some of
these elements may be part of the chainplate
EXAMPLE Bolts, lamination.
4 Symbols
Unless specifically otherwise defined, the symbols, factors and parameters shown in Table 1 are the
ones used in the main core or this document.
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oSIST prEN ISO 12215-10:2018
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Table 1 — Symbols, factors, parameters
Symbol Unit MAIN CORE - Designation/Meaning of symbol Reference
1 - Main dimensions of the craft
Beam between centres of buoyancy: between centre of buoyancy of hulls,
B m Table 5
CB
for catamarans and between C of centre hull and CB of float, for trimarans
B
B m Beam between chainplates (from port to starboard) Table C.1
CP
m 7.5
L Length of waterline in m conditions
WL LDC
kg Mass of displacement in fully loaded condition according to ISO 8666 3.2 ,Clause 7
m
LDC
2 - Main dimensions of the rig and connected data
2
m Sail area, index i defining the sail name or combination Table 5, etc.
A
i
N Force, the index I defining which force it corresponds 7.5
F
i
H
Nm Heeling moment with index , , etc Table 5
UP D
Mi
knots Design apparent wind speed Table 5, etc.
V
A i
R
Nm Righting moment with index i= , , etc Table 5
UP D
M i
See Table 8 for detailed dimension of rig , areas, etc
3 - Factors
1 Design category factor Table 3
k
DC
1 Dynamic load factor Table 10
k
DYN
1 Foresail centre of pressure height factor Table 8
k
HFS
1 Mainsail centre of pressure height factor Table 8
k
HMS
1 Load case factor Tables 3& 7
k
LC
1 Material factor Table 2
k
MAT
1 Roach factor Table 8
k
ROACH
1 Factor assessing heel angle of multihulls Table 5
k
θ
S 1 N° of sail configuration Table 6
C
S 1 Safety factor against i , the index i being y (yield) or u (ultimate) Table 6
Fi
2
N/mm Stress, where i may be LIM, u, uw, yw,uc, ut, uf 5
s ,σ
ii
knots Design apparent wind speed Table 5, etc.
V
Ai
degree Heel angle in sail configuration i Table 5
θ
i
5 Purpose and application of the document
5.1 Purpose of the document
This standard defines the design loads and design stresses on rig elements of a sailing craft and allows
to check the mast step and chainplates and their connection to the craft's structure:
1) by a simplified method or
2) by a developed method.
The developed method also allows the knowledge of the rig loads which are needed to assess the global
loads in the structure of multihulls in ISO 12215-7.
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5.2 The simplified method
This method requires:
— the use of "Established practice" methods of Annex C for the calculation of the mast step/mast pillar
and its connection;
— the use of "Established practice" methods of Annex D for chainplates (metal or FRP) and its
connection.
In that case Annexes C and D are normative.
The use of the simplified method for chainplate avoids the calculation of rig loads to be made by the boat
builder, but Clause 14 requires Mast/rig manufacturer to provide the design load of each rig element,
dimensions of end fittings, etc. See Clause 14 for details.
5.3 The developed method
This method requires the full determination of the rig loads or mast compression. The assessment of the
mast step/chainplates and their connection to the craft can then be checked either by the "established
practice" methods of normative Annexes C & D or by any relevant engineering method, including finite
elements method (FEM).
NOTE The actual dimensioning of mast and rig being a complex mast bending & buckling problem, where the
tuning of rig elongation is paramount, it is voluntarily left out of the scope of this document, even if the values of
the loads defined are useful information for this purpose.
Table 2 sums up the steps to follow for either methods.
Table 2 — Choice of the assessment process
Step Applicable methods Clause & Table
1) SIMPLIFIED METHOD for Mast step or Chainplate
Based on simple mast compression assessment or rig diameter/strength
1.1 Design stress Clause 6 &Table 3
1.2 For mast step and connection: use the "established" method of Annex C Annex C
1.3 For chainplate and connection: use the "established" method of Annex D Annex D
Clause 12&
1.4 Checking compliance & fill the application declaration
Annexe A
1.5 Information in the owner's manual Clause 13
1.6 Information to the boatbuilder Clause 14
2) DEVELOPED METHOD for Rig load, Mast step or Chainplate
Computation of all the loads in the rig
2.1 Design stress Clause 6 &Table 3
Developed method : General assessments Clause 7 &:
HM Design moment upwind: heeling or righting 7.2 & Table 5
D
F & HM Downwind Force and Heeling moment Table 6
DOWN DOWN
2.2
Sail configuration, design heeling/righting moment & apparent wind speed Table 7
Rig dimensions and default values Table 8
Transverse forces in the mainsail and foresails Table 9
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Table 2 (continued)
Step Applicable methods Clause & Table
Forces in rigging elements Clause 8 &:
Forces in forestay, inner forestay, mainsail leech and halyards 8.2 & Table 10
2.3
Forces in backstay or running backstay or equivalent 8.3 & Table 10
Loads on other rig elements 8.4
2.4 Structural components to be assessed Clause 9
Rig attachment calculation
Clause 10 &:
Mast step and its connection: use the "established" method of Annex C or
another calculation method according to Clause 10 10.1 and/or Anne C
2.5
For chainplate and connection: use the "established" method of Annex D or 10.2 and/or Annex D
another calculation method according to Clause 10
10.3
Design details of chainplates and their attachment
2.6 Calculation methods Clause 11
Clause 12 &:
2.7 Compliance to this document and application declaration
Annex A
2.8 Information in the owner's manual Clause 13
2.9 Information to the boatbuilder Clause 14
6 Design stresses
6.1 General
The design stresses defined in Table 3 are the same as the ones used in ISO 12215-9, except that the
dynamic factor k increases the loads for craft that are light and therefore have a "dynamic
DYN
behaviour", see Table 10.
This document differentiates tw
...