SIST EN 508-3:2021
(Main)Roofing and cladding products from metal sheet - Specification for self-supporting products of steel, aluminium or stainless steel sheet - Part 3: Stainless steel
Roofing and cladding products from metal sheet - Specification for self-supporting products of steel, aluminium or stainless steel sheet - Part 3: Stainless steel
This Part of EN 508 specifies requirements for self-supporting roofing products for discontinuous laying made from stainless steel sheet with or without additional metallic and/or organic coatings.
The standard establishes general characteristics, definitions, classifications and labelling for the products, together with requirements for the materials from which the products can be manufactured. It is intended to be used either by manufacturers to ensure that their products comply with the requirements or by purchasers to verify that the products comply before they are despatched from the factory. It specifies the requirements for products which enable them to meet all normal service conditions.
The standard applies to all discontinuously laid self-supporting external profiled sheets for roofing with the exception of tiles with a surface area less than 1 m2 and produced by stamping. These profiled roof sheets are designed to keep wind, rain and snow out of the building and to transfer any resultant loads and infrequent maintenance loads to the structure.
No requirements for supporting construction, design of roof system and execution of connections and flashings are included.
Dachdeckungs- und Wandbekleidungselemente aus Metallblech - Spezifikation für selbsttragende Dachdeckungsprodukte aus Stahlblech, Aluminiumblech oder nichtrostende Stahlblech - Teil 3: Nichtrostender Stahlblech
Dieser Teil von EN 508 legt Anforderungen an selbsttragende Dacheindeckungsprodukte, Dachbekleidungs-produkte, Außenwandbekleidungsprodukte, Fassadenpaneel-, Kassettenprofil- und Dachpfannenprodukte zur überlappenden Verlegung fest, die aus nichtrostendem Stahl, mit oder ohne zusätzliche metallische und/oder organische Beschichtung, gefertigt wurden.
Dieses Dokument legt die allgemeinen Merkmale, Definitionen, Klassifizierungen und die Beschriftung für die Produkte fest sowie die Anforderungen an die Werkstoffe, aus denen die Produkte hergestellt werden können. Sie ist dafür bestimmt, entweder vom Hersteller verwendet zu werden, um sicherzustellen, dass seine Produkte den Anforderungen entsprechen, oder vom Käufer, um zu überprüfen, ob die Produkte den Anforderungen entsprechen, bevor sie das Werk verlassen. Sie legt die Anforderungen an Produkte fest, unter denen diese allen normalen Einsatzbedingungen gerecht werden können.
Dieses Dokument gilt für alle außen verwendeten, überlappend verlegten, selbsttragenden Profilbleche für Dacheindeckungsprodukte, Dachbekleidungsprodukte, Außenwandbekleidungsprodukte, Fassadenpaneel-, Kassettenprofil- und Dachpfannenprodukte, sie gilt nicht für Dachpfannen mit einer Oberfläche < 1 m2 und gepresste Dachpfannen. Diese Profilbleche zur Dacheindeckung sind so ausgelegt, dass das Eindringen von Wind, Regen und Schnee in das Gebäude verhindert wird und dass alle daraus und alle aus nicht ständig durchgeführten Instandhaltungsarbeiten resultierenden Lasten auf das Bauwerk übertragen werden.
Dieses Dokument gilt nicht für Produkte für tragende Zwecke, d. h. es gilt für Produkte zur Verwendung in Konstruktionen der Klasse III (nach EN 1993-1-3), es gilt nicht für Produkte in Konstruktionen der Klassen I und II (nach EN 1993-1-3), die durch Sicherstellung der Plattenschubfestigkeit bzw. des Widerstandes gegen ständige statische Belastungen (mit Ausnahme des Eigengewichts des Metallblechs) zur globalen oder lokalen Stabilität des Bauwerks beitragen.
Anforderungen an die Unterkonstruktion, die Konstruktion des Dachsystems und an die Ausführung der Verbindungen und an Kehlbleche sind nicht Gegenstand dieser Norm.
Produits de couverture et bardage en tôle métallique - Spécification pour les produits autoportants en tôle d'acier, d'aluminium ou d'acier inoxydable - Partie 3 : Acier inoxydable
La présente partie de l'EN 508 spécifie les prescriptions relatives aux produits autoportants pour toiture,
couverture, bardages extérieur et intérieur et cloisons, plateaux et tuiles pour pose en discontinu en tôle
d'acier inoxydable avec ou sans revêtement métallique et/ou organique supplémentaire.
Le présent document établit les caractéristiques générales, les définitions, les classifications et
l'étiquetage applicables aux produits, de même que les prescriptions relatives aux matériaux à partir
desquels les produits peuvent être fabriqués. Il est destiné à être utilisé soit par des fabricants en vue de
démontrer que leurs produits sont conformes aux prescriptions, soit par des acheteurs pour vérifier que
les produits sont conformes avant leur expédition de l’usine. Il spécifie les prescriptions relatives aux
produits pour leur permettre de répondre à toutes les conditions normales en service.
Le présent document s'applique à toutes les plaques autoportantes nervurées extérieures de couverture,
de bardages intérieurs et extérieurs, de cloisons posées en discontinu, à l'exception des tuiles d'une
surface inférieure à 1 m2 et produites par emboutissage. Ces plaques profilées sont conçues pour
empêcher le vent, la pluie et la neige de pénétrer dans le bâtiment et pour transmettre à la structure
porteuse les charges qui en résultent ainsi que les charges non permanentes dues aux opérations
d'entretien.
Le présent document ne couvre pas les produits pour applications structurelles, c'est‐à‐dire qu'il couvre
les produits utilisés dans la classe structurelle III (selon EN 1993‐1‐3), il ne couvre pas les produits
destinés aux constructions de classes structurelles I et II (selon EN 1993‐1‐3) destinés à contribuer à la
stabilité globale ou partielle de la structure du bâtiment ou apportant un contreventement ou une
résistance aux charges statiques permanentes (à l'exclusion du poids propre de la plaque métallique).
Aucune prescription relative à la structure porteuse, à la conception du système de toiture et à la
réalisation des assemblages et des finitions n'est incluse.
Pločevina za pokrivanje streh in oblaganje sten - Specifikacije za samonosilne proizvode iz jeklene, aluminijeve pločevine ali pločevine iz nerjavnega jekla - 3. del: Nerjavno jeklo
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 508-3:2021
01-december-2021
Nadomešča:
SIST EN 508-3:2008
Pločevina za pokrivanje streh in oblaganje sten - Specifikacije za samonosilne
proizvode iz jeklene, aluminijeve pločevine ali pločevine iz nerjavnega jekla - 3.
del: Nerjavno jeklo
Roofing and cladding products from metal sheet - Specification for self-supporting
products of steel, aluminium or stainless steel sheet - Part 3: Stainless steel
Dachdeckungs- und Wandbekleidungselemente aus Metallblech - Spezifikation für
selbsttragende Dachdeckungsprodukte aus Stahlblech, Aluminiumblech oder
nichtrostende Stahlblech - Teil 3: Nichtrostender Stahlblech
Produits de couverture et bardage en tôle métallique - Spécification pour les produits
autoportants en tôle d'acier, d'aluminium ou d'acier inoxydable - Partie 3 : Acier
inoxydable
Ta slovenski standard je istoveten z: EN 508-3:2021
ICS:
77.140.50 Ploščati jekleni izdelki in Flat steel products and semi-
polizdelki products
91.060.20 Strehe Roofs
SIST EN 508-3:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 508-3:2021
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SIST EN 508-3:2021
EN 508-3
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2021
EUROPÄISCHE NORM
ICS 91.060.20 Supersedes EN 508-3:2008
English Version
Roofing and cladding products from metal sheet -
Specification for self-supporting products of steel,
aluminium or stainless steel sheet - Part 3: Stainless steel
Produits de couverture et bardage en tôle métallique - Dachdeckungs- und Wandbekleidungselemente aus
Spécification pour les produits autoportants en tôle Metallblech - Spezifikation für selbsttragende
d'acier, d'aluminium ou d'acier inoxydable - Partie 3 : Dachdeckungsprodukte aus Stahlblech,
Acier inoxydable Aluminiumblech oder nichtrostende Stahlblech - Teil 3:
Nichtrostender Stahlblech
This European Standard was approved by CEN on 11 July 2021.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC 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
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 508-3:2021 E
worldwide for CEN national Members.
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SIST EN 508-3:2021
EN 508-3:2021 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions, symbols and abbreviations . 6
3.1 General . 6
3.2 Materials . 6
3.3 Profile definitions . 7
3.4 Geometry . 9
3.5 Symbols and abbreviations . 12
4 Requirements . 12
4.1 General . 12
4.2 Materials . 12
4.2.1 Grades. 12
4.2.2 Chemical composition . 13
4.2.3 Physical properties . 13
4.2.4 Surface finishes of stainless steel . 13
4.2.5 Tin coated stainless steel . 13
4.2.6 Organic coated stainless steel . 14
4.3 Products . 14
4.3.1 Mechanical resistance . 14
4.3.2 Design (calculation and tests) of mechanical resistance . 14
4.3.3 Dimensions . 15
4.3.4 Dimensional tolerances for the profiled sheets . 15
4.3.5 Safety in case of fire . 15
5 Test methods . 16
5.1 Material properties . 16
5.2 Mechanical properties . 16
6 Designation. 16
7 Marking, labelling, packaging . 16
7.1 Marking and labelling . 16
7.2 Packaging and special ordering conditions . 17
7.3 Transport, storage and handling . 17
Annex A (informative) Physical properties . 18
Annex B (normative) Dimensional tolerances . 19
Annex C (informative) Test methods for concentrated load . 39
Bibliography . 40
2
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SIST EN 508-3:2021
EN 508-3:2021 (E)
European foreword
This document (EN 508-3:2021) has been prepared by Technical Committee CEN/TC 128 “Roof covering
products for discontinuous laying and products for wall cladding”, the secretariat of which is held by NBN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2022, and conflicting national standards shall be
withdrawn at the latest by April 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 508-3:2008.
In comparison with EN 508-3:2008, the following technical changes have been made:
— scope of the document has been extended to cladding products;
— grades have been added;
— clarification has been done about tolerances of liner trays.
These changes or additions can be found in the following clauses and subclauses: Clause 1; Clause 2; 3.2.3;
4.2.1; 4.2.4; 4.3.5; 4.3.5.2; 4.3.5.3; Annex A and the Bibliography.
EN 508, Roofing and cladding products from metal sheet — Specification for self-supporting products of
steel, aluminium or stainless steel sheet, consists of the following parts:
— Part 1: Steel;
— Part 2: Aluminium;
— Part 3: Stainless steel.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
3
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SIST EN 508-3:2021
EN 508-3:2021 (E)
Introduction
Figure 1 indicates the position of this document in the CEN framework of standards concerning roofing
products of metal sheet.
Figure 1 — Framework of standards
In this document the performance of the product has been defined in terms of calculation and a number
of type tests.
The performance of a roof or cladding constructed with these products depends not only on the
properties of the product as required by this document, but also on the design, construction and
performance of the roof or cladding as a whole in relation to the environment and conditions of use.
4
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SIST EN 508-3:2021
EN 508-3:2021 (E)
1 Scope
This part of EN 508 specifies requirements for self-supporting products for roof covering, wall cladding,
lining, liner tray and tile products for discontinuous laying made from stainless steel sheets with or
without additional metallic and/or organic coatings. Sheets intended to be used with insulation and
membranes are also covered.
This document establishes general characteristics, definitions, classifications and labelling for the
products, together with requirements for the materials from which the products can be manufactured. It
is intended to be used either by manufacturers to ensure that their products comply with the
requirements or by purchasers to verify that the products comply before they are dispatched from the
factory. It specifies the requirements for products which enable them to meet all normal service
conditions.
This document applies to all discontinuously laid self-supporting external profiled sheets for roof
covering, wall cladding, lining, liner trays and tile products with the exception of tiles with a surface area
2
less than 1 m and produced by stamping. These profiled roof sheets are designed to keep wind, rain and
snow out of the building and to transfer any resultant loads and infrequent maintenance loads to the
structure.
This document does not cover products for structural purposes, i.e. it does cover products used in
structural class III (according to EN 1993-1-3), it does not cover products used in constructions of
structural classes I and II (according to EN 1993-1-3) intended to contribute to the global or partial
stability of the building structure by providing racking resistance or resistance to permanent static loads
(excluding self-weight of the metal sheet).
No requirements for supporting construction, design of roof or cladding, lining, tile system and execution
of connections and flashings are included.
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.
EN 10088-1, Stainless steels - Part 1: List of stainless steels
EN 10088-4, Stainless steels - Part 4: Technical delivery conditions for sheet/plate and strip of corrosion
resisting steels for construction purposes
EN 14782, Self-supporting metal sheet for roofing, external cladding and internal lining - Product
specification and requirements
EN ISO 9445-1, Continuously cold-rolled stainless steel - Tolerances on dimensions and form - Part 1:
Narrow strip and cut lengths (ISO 9445-1)
EN ISO 9445-2, Continuously cold-rolled stainless steel - Tolerances on dimensions and form - Part 2: Wide
strip and plate/sheet (ISO 9445-2)
5
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SIST EN 508-3:2021
EN 508-3:2021 (E)
3 Terms and definitions, symbols and abbreviations
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1 General
3.1.1
self-supporting product
product which will, by virtue of its material and shape, support all applied loadings (e.g. snow, wind, foot
traffic) and transmit these loadings to spaced structural supports
3.2 Materials
3.2.1
stainless steel sheet
steel sheet with at least a content of 10,5 % chromium and max. 1,2 % carbon
Note 1 to entry: For roofing or cladding products the stainless steel grades are:
— ferritic;
— austenitic with or without molybdenum;
— austenitic ferritic (duplex); and
— higher alloyed grades.
3.2.2
tin coated stainless steel
stainless steel continuously coated with tin by electrodeposition
3.2.3
organic coated stainless steel
stainless steel or tin coated stainless steel which is continuously (factory-) painted by roller or spray
process
2
Note 1 to entry: EN 10169:— refers to this type of coated steel.
6
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SIST EN 508-3:2021
EN 508-3:2021 (E)
3.3 Profile definitions
3.3.1
trapezoidal profiled sheet
self-supporting sheet which is designed to allow it to be side and end lapped, the crowns of which may
be rounded and, in addition, the crowns, webs and valleys may be stiffened
Note 1 to entry: See Figures 2, 3, 4 and 5.
Figure 2 — Part of typical trapezoidal profile
Figure 3 — Part of typical trapezoidal profile with rounded crowns
Figure 4 — Part of typical trapezoidal profile with stiffened crown and web
Figure 5 — Part of typical trapezoidal profile with stiffened valley
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SIST EN 508-3:2021
EN 508-3:2021 (E)
3.3.2
sinusoidal profiled sheet
self-supporting sheet which is designed to allow it to be side and end lapped, comprising a series of arc
shaped crowns and valleys interconnected with tangential webs
Note 1 to entry: See Figure 6.
Key
1 depth 3 overlap
2 pitch 4 angle
Figure 6 — Part of typical sinusoidal profiled sheet
3.3.3
standing seam sheet
concealed fix sheet
self-supporting sheet profiled in such a way that the fixings are hidden within the construction and are
not exposed to the weather
Note 1 to entry: The profile shape is designed to allow the formation of side laps on site.
Note 2 to entry: As these types of roof covering products are used in proprietary roofing systems, no structural
requirements are given within this document.
Note 3 to entry: See Figures 7 and 8.
Note 4 to entry: These products are normally designed by testing.
Figure 7 — Typical standing seam profile
Figure 8 — Typical concealed fix profile
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SIST EN 508-3:2021
EN 508-3:2021 (E)
3.3.4
tile profile
part of typical tile profiled sheets that can allow the sheet to be side and/or end lapped
Note 1 to entry: The tile profiles can include transverse steps.
Note 2 to entry: As these types of roof covering products are used in proprietary systems, no structural
requirements are given within this document.
Note 3 to entry: See Figure 9 a), b) and c).
Note 4 to entry: These products are normally designed by testing.
Figure 9 — Typical tile profiles
3.4 Geometry
Note 1 to entry: The names for various parts of typical trapezoidal profiled sheets are given in Figures 10 and 11,
with additional definitions for sinusoidal profiles in Figure 6 and tile profiles in Figure 12.
9
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SIST EN 508-3:2021
EN 508-3:2021 (E)
Key
1 cover width 7 depth
2 valley stiffener 8 valley
3 rib 9 pitch
4 web stiffener 10 crown
5 trough 11 drainage groove
6 web 12 crown stiffener
Figure 10 — Definitions of the parts of typical trapezoidal profiled sheets
10
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SIST EN 508-3:2021
EN 508-3:2021 (E)
Key
1 bend radius 4 overlap
2 end lap 5 underlap
3 web angle 6 side lap in principle the same on tiles
Figure 11 — Definitions of the parts of typical trapezoidal profiled sheets
Key
1 height of the step 3 number of steps
2 length of the step 4 end lap
Figure 12 — Definitions of the parts of typical tile
11
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SIST EN 508-3:2021
EN 508-3:2021 (E)
3.5 Symbols and abbreviations
For the purposes of this document, the following symbols and abbreviations apply.
X Stainless steel
X .+SE Tin coated stainless steel
SP Polyester paint coating
SP-SI Silicone-modified polyester paint coating
PVDF Polyvinylidene fluoride paint coating
PUR Polyurethane paint coating
PUR-PA Polyurethane-modified polyester paint coating
PVC(P) Polyvinylchloride(plastisol) coating applied by coil coating process
PVC(F) Polyvinylchloride (plastisol) film coating
PVF(F) Polyvinylfluoride film coating
PE(F) Polyethylene film coating
PET(F) Polyethylene terephthalate film coating
PP(F) Polypropylene film coating
4 Requirements
4.1 General
The product shall be manufactured from materials complying with 4.2.
The supplier of the materials is responsible for carrying out the tests necessary to verify that the materials
supplied to the manufacturer comply with the requirements and should provide appropriate inspection
documents (according to EN 10204) on request.
NOTE The symbols and abbreviations to be used to designate the steel grade, the type and mass of coating are
those of the standards referred to in Clause 2.
Product testing shall be provided to a defined schedule and carried out by the manufacturer or by an
approved body or by an independent third party. A permanent quality system shall be adopted by the
1
manufacturer .
4.2 Materials
4.2.1 Grades
The grades of stainless steel shall be selected depending on the corrosion conditions of the local
environment, durability requirements and aesthetic considerations.
Material for self-supporting roll formed and brake pressed profiles shall be one of the grades of steel as
given in Table 1.
1
E.g. quality management system based on EN ISO 9001.
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EN 508-3:2021 (E)
Table 1 — Grades
Steel grade Steel designation
Steel name Steel number
a
Ferritic with organic coating 1.4000
X6Cr13
a
Ferritic with or without organic coating 1.4016
X6Cr17
X6CrMo17–1 1.4113
X2CrTiNb18 1.4509
X3CrTi17 1.4510
X2CrMoTi18–2 1.4521
X6CrMoNb17–1 1.4526
Austenitic with or without organic X5CrNi18–10 1.4301
coating
X2CrNi18–9 1.4307
Austenitic/Molybdenum with or without X5CrNiMo17–12–2 1.4401
organic coating
X2CrNiMo17–12–2 1.4404
a
Profiled sheets made from these grades may not be permitted for use in some countries.
4.2.2 Chemical composition
The chemical composition of stainless steel shall be in accordance with EN 10088-4.
4.2.3 Physical properties
The physical properties for stainless steel shall be in accordance with EN 10088-1.
NOTE Some physical properties are given in Annex A, for information.
4.2.4 Surface finishes of stainless steel
All normal stainless steel finishes can be used including bright finish, 2b according to EN 10088-4, and
dull finish, 2d and 2a according to EN 10088-4 and other low or high reflective finishes.
4.2.5 Tin coated stainless steel
4.2.5.1 Coating
The coating shall be homogeneous and shall not present any discontinuities which could impair the use
of the product.
After a bend test carried out with a bend angle of 180 ° and a diameter of the mandrel equal to 1t
(t thickness of the product), there shall be no peeling of the coating.
4.2.5.2 Coating mass
2
The nominal coating mass shall be the total mass of both surfaces expressed in g/m .
2
The nominal coating mass shall be ≥ 10 g/m . The minimum values of the coating mass shall be
2 2
respectively 10 g/m and 8 g/m when determined by a triple spot test or a single spot test.
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EN 508-3:2021 (E)
4.2.6 Organic coated stainless steel
The main organic coatings suitable for application to stainless steel substrates are given in Table 2.
2
NOTE Further information is given in EN 10169:— .
Organic coatings shall be selected dependent upon the processing and service conditions, including
specific climatic conditions.
Table 2 — Organic coatings and specified minimum thicknesses
Coating Symbol Number of Minimum permitted
layers per nominal coating thickness in
a
µm per side
side
Polyester SP 2 25
Silicone-modified polyester SP-SI 2 25
Polyurethane PUR 2 25
Polyvinylidenefluoride PVDF 2, 3, 4 25
Polyvinylchloride (Plastisol) PVC (P) 2 80
a
Including primer but excluding protective films.
4.3 Products
4.3.1 Mechanical resistance
The manufacturer shall state the cross-sectional, material and member characteristics required for
design.
The product for roof shall resist the design loads from self-weight, insulation (if applicable), eventual
membranes, snow, wind and maintenance. These loads shall be factored such that they will not impair
the performance (mechanical stability, and serviceability) of the roof.
NOTE 1 The load level, the levels of safety and permissible deflection are defined in national building regulations.
The product for cladding shall resist the design loads from self-weight, eventual insulation and wind.
These loads shall be factored such that they will not impair the performance (mechanical stability, and
serviceability) of the cladding.
NOTE 2 The load level, the levels of safety and permissible deflection are defined in national building regulations.
4.3.2 Design (calculation and tests) of mechanical resistance
The provisions applicable shall be observed for the design and Ultimate Limit State (ULS) and
Serviceability Limit State (SLS) verifications.
The mechanical performance of the product shall be declared together with the details of which values
have been used for its determination in the place of use.
NOTE Conditions in the place of use can include national regulations.
For calculation and testing either national regulations or EN 1993-1-4 for stainless steel may be used.
Calculation and test methods referred to in this document mainly deal with trapezoidal sheets. Tiles,
standing seam sheets and concealed fix sheets are used in proprietary roofing and cladding systems, no
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EN 508-3:2021 (E)
structural requirements are given within this document for these products. These products should
normally be designed by testing.
4.3.3 Dimensions
4.3.3.1 General
The dimensions of the product shall be fixed in order that the roof constructed with these products can
fulfil its functions.
4.3.3.2 Thickness
Measurements of the thickness of manufactured products, such as profiled sheets, shall be made not less
than 40 mm from the edges in accordance with EN ISO 9445-1 and EN ISO 9445-2.
Products shall be classified according to tolerance on thickness as follows:
— class 1: full minus nominal normal tolerance according to EN ISO 9445-1 and EN ISO 9445-2;
— class 2: 1/2 minus nominal normal tolerance according to EN ISO 9445-1 and EN ISO 9445-2;
— class 3: zero minus tolerance.
For products of class 3, mechanical resistance is calculated using the minimum thickness of the steel core
guaranteed by the manufacturer.
NOTE National regulations can state the class of product that it will be possible to use.
4.3.4 Dimensional tolerances for the profiled sheets
Tolerances for the profile shape of the product and methods of measurement shall be in accordance with
Annex B.
4.3.5 Safety in case of fire
4.3.5.1 Reaction to fire
When required, the necessary information for determining the reaction to fire specifying the boundary
conditions used for its determination shall be stated. The provisions shall be applicable with the end use
conditions.
The performance shall be defined according to the “euroclass system” (as in 4.3.5.2 and 4.3.5.3).
EN 14782 defines the single burning item (SBI) specimen when required, including direct and extended
application rules.
The national regulations fix the level of reaction to fire required for each building.
4.3.5.2 Resistance to fire
When required, the necessary information for determining the resistance to fire specifying the boundary
conditions used for its determination shall be stated. The provisions shall be applicable with the end use
conditions.
The national regulations fix the level of reaction to fire required for each building.
When required, the performance shall be defined according to the euroclass system.
NOTE The resistance to fire concerns only the E, I and W classification and does not concern the R-
classification.
15
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4.3.5.3 External fire roof performance
When required, the performance shall be defined according to the euroclass system.
NOTE The external fire roof performance can be BROOF(t1), BROOF(t2), BROOF(t3) or BROOF(t4).
5 Test methods
5.1 Material properties
Test methods for material properties are given in EN 10088-4 and for tin coated stainless steel in
3
accordance with EN 10202:— .
5.2 Mechanical properties
The performance of the product under distributed load shall be determined in accordance with 4.3.1 and
4.3.2.
When required (i.e. for roof products), the performance of the product under concentrated load shall be
declared by the manufacturer with reference to EN 14782. See Annex C for national standards on test
methods for determining concentrated load.
The performance of the product under concentrated load shall be stated by the manufacturer with
reference to the method used to determine the results.
NOTE Safety under the load from people and the risk of permanent deformation is dependent on many factors,
such as slope of roof, method of installation, see EN 1990.
6 Designation
Products covered by this document shall be designated as follows:
— type of product use (cladding, roofi
...
SLOVENSKI STANDARD
oSIST prEN 508-3:2020
01-september-2020
Pločevina za pokrivanje streh - Specifikacije za samonosilne proizvode iz jeklene,
aluminijeve pločevine ali pločevine iz nerjavnega jekla - 3. del: Nerjavno jeklo
Roofing products from metal sheet - Specification for self-supporting products of steel,
aluminium or stainless steel sheet - Part 3: Stainless steel
Dachdeckungsprodukte aus Metallblech - Festlegungen für selbsttragende
Bedachungselemente aus Stahlblech, Aluminiumblech oder nichtrostendem Stahlblech -
Teil 3: Nichtrostender Stahl
Produits de couverture en tôle métallique - Spécification pour les plaques de couverture
en tôle d'acier, d'aluminium ou d'acier inoxydable - Partie 3 : Acier inoxydable
Ta slovenski standard je istoveten z: prEN 508-3
ICS:
77.140.50 Ploščati jekleni izdelki in Flat steel products and semi-
polizdelki products
91.060.20 Strehe Roofs
oSIST prEN 508-3:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 508-3:2020
DRAFT
EUROPEAN STANDARD
prEN 508-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2020
ICS 91.060.20 Will supersede EN 508-3:2008
English Version
Roofing products from metal sheet - Specification for self-
supporting products of steel, aluminium or stainless steel
sheet - Part 3: Stainless steel
Produits de couverture en tôle métallique - Dachdeckungsprodukte aus Metallblech - Festlegungen
Spécification pour les plaques de couverture en tôle für selbsttragende Bedachungselemente aus
d'acier, d'aluminium ou d'acier inoxydable - Partie 3 : Stahlblech, Aluminiumblech oder nichtrostendem
Acier inoxydable Stahlblech - Teil 3: Nichtrostender Stahl
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 128.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
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.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 508-3:2020 E
worldwide for CEN national Members.
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Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions, symbols and abbreviations . 6
3.1 General . 6
3.2 Materials . 6
3.3 Profiles . 6
3.4 Product geometry . 9
3.5 Symbols and abbreviations . 11
4 Requirements . 12
4.1 General . 12
4.2 Materials . 12
4.3 Products . 13
5 Test methods . 15
5.1 Material properties . 15
5.2 Structural properties . 15
6 Designation. 15
7 Marking, labelling, packaging, special ordering conditions, transport, storage and
handling . 16
7.1 Marking and labelling . 16
7.2 Packaging and special ordering conditions . 16
7.3 Transport, storage and handling . 16
Annex A (informative) Physical properties . 17
Annex B (normative) Dimensional tolerances . 18
Annex C (informative) Test methods for concentrated load . 37
Bibliography . 38
2
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European foreword
This document (prEN 508-3:2020) has been prepared by Technical Committee CEN/TC 128 “Roof
covering products for discontinuous laying and products for wall cladding”, the secretariat of which is
held by NBN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 508-3:2008.
EN 508 Roofing and cladding products from metal sheet — Specification for self-supporting products of
steel, aluminium or stainless steel sheet consists of the following parts:
— Part 1: Steel;
— Part 2: Aluminium;
— Part 3: Stainless steel.
In comparison with EN 508-3:2008, the scope of the document has been extended to cladding products.
Grades have been added.
These changes or additions can be found in the following Clauses and subclauses: Clause 1; Clause 2;
3.2.3; 4.2.1; 4.2.4; 4.3.5; 4.3.5.2; 4.3.5.3; Annex A and the Bibliography.
3
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Introduction
Figure 1 indicates the position of this document in the CEN framework of standards concerning roofing
products of metal.
Figure 1 — Framework of standards
In this document the performance of the product has been defined in terms of calculation and a number
of type tests.
The performance of a roof constructed with these products depends not only on the properties of the
product as required by this document, but also on the design, construction and performance of the roof
as a whole in relation to the environment and conditions of use.
4
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1 Scope
This Part of EN 508 specifies requirements for self-supporting products for roof covering, wall cladding,
lining, liner tray and title products for discontinuous laying made from stainless steel sheet with or
without additional metallic and/or organic coatings.
This document establishes general characteristics, definitions, classifications and labelling for the
products, together with requirements for the materials from which the products can be manufactured.
It is intended to be used either by manufacturers to ensure that their products comply with the
requirements or by purchasers to verify that the products comply before they are despatched from the
factory. It specifies the requirements for products which enable them to meet all normal service
conditions.
This document applies to all discontinuously laid self-supporting external profiled sheets for roof
covering, wall cladding, lining, liner tray and title products with the exception of tiles with a surface
2
area less than 1 m and produced by stamping. These profiled roof sheets are designed to keep wind,
rain and snow out of the building and to transfer any resultant loads and infrequent maintenance loads
to the structure.
This document does not cover products for structural purposes, i.e. it does cover products used in
structural class III (according to EN 1993-1-3), it does not cover products used in constructions of
Structural Classes I and II (according to EN 1993-1-3) intended to contribute to the global or partial
stability of the building structure by providing racking resistance or resistance of permanent static
loads (excluding self-weight of the metal sheet).
No requirements for supporting construction, design of roof system and execution of connections and
flashings are included.
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
EN 10088-1, Stainless steels — Part 1: List of stainless steels
EN 10088-4, Stainless steels — Part 4: Technical delivery conditions for sheet/plate and strip of corrosion
resisting steels for construction purposes
EN 10202, Cold reduced tinmill products — Electrolytic tinplate and electrolytic chromium/chromium
oxide coated steel
EN 14782, Self-supporting metal sheet for roofing, external cladding and internal lining — Product
specification and requirements
EN ISO 9445-1, Continuously cold-rolled stainless steel — Tolerances on dimensions and form — Part 1:
Narrow strip and cut lengths (ISO 9445-1)
EN ISO 9445-2, Continuously cold-rolled stainless steel — Tolerances on dimensions and form – Part 2:
Wide strip and plate/sheet (ISO 9445-2)
5
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3 Terms and definitions, symbols and abbreviations
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1 General
3.1.1
self-supporting product
product which will, by virtue of its material and shape, support all applied loadings (e.g. snow, wind,
foot traffic) and transmit these loadings to spaced structural supports
3.2 Materials
3.2.1
stainless steel
steel sheets with at least a content of 10,5 % chromium and max 1,2 % carbon
Note 1 to entry: For roofing products the stainless steel grades are:
— ferritic;
— austenitic with or without molybdenum;
— austenitic ferritic (duplex); and
— higher alloyed grades.
3.2.2
tin coated stainless steel
stainless steel continuously coated with tin by electrodeposition
3.2.3
organic coated stainless steel
stainless steel or tin coated stainless steel which is continuously (factory-) painted by roller or spray
process
Note 1 to entry: EN 10169-1 refers to this type of coated steel.
3.3 Profiles
3.3.1
trapezoidal profiled sheet
self-supporting sheet which is designed to allow it to be side and end lapped, the crowns of which may
be rounded and, in addition, the crowns, webs and valleys may be stiffened
Note 1 to entry: See Figures 2 to 5.
6
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Figure 2 — Part of typical trapezoidal profile
Figure 3 — Part of typical trapezoidal profile with rounded crowns
Figure 4 — Part of typical trapezoidal profile with stiffened crown and web
Figure 5 — Part of typical trapezoidal profile with stiffened valley
3.3.2
sinusoidal profiled sheet
self-supporting sheet which is designed to allow it to be side and end lapped, comprising a series of arc
shaped crowns and valleys interconnected with tangential webs
Note 1 to entry: See Figure 6.
Figure 6 — Part of typical sinusoidal profiled sheet
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3.3.3
standing seam and concealed fix sheet
self-supporting sheet profiled in such a way that the fixings are hidden within the construction and are
not exposed to the weather
Note 1 to entry: See Figures 7 and 8.
Note 2 to entry: The profile shape is designed to allow the formation of side laps on site.
Note 3 to entry: As these types of roof covering products are used in proprietary roofing systems, no structural
requirements are given within the present standard.
Note 4 to entry: These products are normally designed by testing.
Figure 7 — Typical standing seam profile
Figure 8 — Typical concealed fix profile
3.3.4
tile profiles
parts of typical tile profiled sheets that can allow the sheet to be side and/or end lapped
Note 1 to entry: See Figures 9 (a) b) and (c)).
Note 2 to entry: The tile profiles may include transverse steps.
Note 3 to entry: As these types of roof covering products are used in proprietary systems no structural
requirements are given within this document.
Note 4 to entry: These products are normally designed by testing.
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Figure 9 — Typical tile profiles
3.4 Product geometry
Note 1 to entry: The names for various parts of typical trapezoidal profiled sheets are given in Figures 10a) and
10b), with additional definitions for sinusoidal profiles in Figure 11 and tile profiles in Figure 12.
a) Definitions of the parts of typical trapezoidal profiled sheets
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b) Definitions of the parts of typical trapezoidal profiled sheets
Key
1 Bend radius 4 Overlap
2 End lap 5 Underlap
3 Web angle 6 Side lap in principle the same on tiles
Figure 10 — Definitions of the parts of typical profiled sheets
Key
1 Depth
2 Pitch
Figure 11 — Definitions of the parts of typical sinusoidal profiled sheets
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Key
1 Height of the step
2 Length of the step
3 Number of steps
4 End lap
Figure 12 — Definitions of the parts of typical tile
3.5 Symbols and abbreviations
For the purposes of this document, the following symbols and abbreviations apply.
X Stainless steel
X .+SE Tin coated stainless steel
SP Polyester paint coating
SP-SI Silicone-modified polyester paint coating
PVDF Polyvinylidene fluoride paint coating
PUR Polyurethane paint coating
PUR-PA Polyurethane-modified polyester paint coating
PVC(P) Polyvinylchloride(plastisol) coating applied by coil coating process
PVC(F) Polyvinylchloride (plastisol) film coating
PVF(F) Polyvinylfluoride film coating
PE(F) Polyethylene film coating
PET(F) Polyethylene terephthalate film coating
PP(F) Polypropylene film coating
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4 Requirements
4.1 General
The product shall be manufactured from materials complying with 4.2
The supplier of the materials is responsible for carrying out the tests necessary to verify that the
materials supplied to the manufacturer comply with the requirements and should provide appropriate
inspection documents (according to EN 10204) on request.
NOTE The symbols and abbreviations to be used to designate the steel grade, the type and mass of the
metallic coating are those of the standards referred to in Clause 2.
Product testing shall be provided to a defined schedule and carried out by the manufacturer or by an
1)
approved body. A permanent quality system shall be adopted by the manufacturer .
4.2 Materials
4.2.1 Grades
The grades of stainless steel shall be selected depending on the corrosion conditions of the local
environment, durability requirements and aesthetic considerations.
Material for self-supporting roll formed and brake pressed profiles shall be one of the grades of steel as
given in Table 1.
Table 1 — Grades
Steel grade Steel designation
Steel name Steel number
Ferritic with organic coating a 1.4000
X6Cr13
Ferritic with or without organic coating a 1.4016
X6Cr17
X6CrMo17–1 1.4113
X2CrTiNb18 1.4509
X3CrTi17 1.4510
X2CrMoTi18–2 1.4521
X6CrMoNb17–1 1.4526
Austenitic with or without organic X5CrNi18–10 1.4301
coating
X2CrNi18–9 1.4307
Austenitic/Molybdenum with or without X5CrNiMo17–12–2 1.4401
organic coating
X2CrNiMo17–12–2 1.4404
a
Profiled sheets made from these grades may not be permitted for use in some countries.
4.2.2 Chemical composition
The chemical composition of stainless steel shall be in accordance with EN 10088-4.
1
) E.g. quality management system based on EN ISO 9001.
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4.2.3 Physical properties
The physical properties for stainless steel shall be in accordance with EN 10088-1.
NOTE Some physical properties are given in Annex A, for information.
4.2.4 Surface finishes of stainless steel
All normal stainless steel finishes can be used including bright finish, 2b according to EN 10088-4, and
dull finish, 2d and 2a according to EN 10088-4 and other low or high reflective finishes.
4.2.5 Tin coated stainless steel
4.2.5.1 Coating
The coating shall be homogeneous and shall not present any discontinuities which could impair the use
of the product.
After a bend test carried out in accordance with EU 12 with a bend angle of 180° and a diameter of the
mandrel equal to 1t (t thickness of the product), there shall be no peeling of the coating.
4.2.5.2 Coating mass
2
The nominal coating mass shall be the total mass of both surfaces expressed g/m .
2
The nominal coating mass shall be ≥ 10 g/m . The minimum values of the coating mass shall be
2 2
respectively 10 g/m and 8 g/m when determined by a triple spot test or a single spot test.
4.2.6 Organic coated stainless steel
The main organic coatings suitable for application to stainless steel substrates are given in Table 2.
NOTE Further information is given in EN 10169-1, EN 10169-2 and EN 10169-3.
Organic coatings shall be selected dependent upon the processing and service conditions, including
specific climatic conditions.
Table 2 — Organic coatings and specified minimum thicknesses
Coating Symbol Number of Minimum permitted
layers per nominal coating thickness in
a
µm per side
side
Polyester SP 2 25
Silicone-modified polyester SP-SI 2 25
Polyurethane PUR 2 25
Polyvinylidenefluoride PVDF 2, 3, 4 25
Polyvinylchloride (Plastisol) PVC (P) 2 80
a
Including primer but excluding protective films.
4.3 Products
4.3.1 Mechanical resistance
The product for roof shall resist the design loads from self-weight, insulation (if applicable), eventual
membranes, snow, wind and maintenance. These loads shall be factored such that they will not impair
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the performance of the roof. The load level, the levels of safety and permissible deflection are defined in
national building regulations.
The product for cladding shall resist the design loads from self-weight, eventual insulation and wind.
These loads shall be factored such that they will not impair the performance of the roof. The load level,
the levels of safety and permissible deflection are defined in national building regulations.
4.3.2 Calculation and tests of mechanical resistance
The mechanical performance of the product shall be declared together with the details of which
values have been used for its determination in the place of use.
NOTE Conditions in the place of use can include national regulations.
For calculation and testing either national regulations or EN 1999-1-4 may be used.
Calculation and test methods referred to in this document mainly deal with trapezoidal sheets. Tiles,
standing seam sheets and concealed fix sheets are used in proprietary roofing and cladding systems, no
structural requirements are given within this document for these products. These products should
normally be designed by testing.
4.3.3 Dimensions
4.3.3.1 General
The dimensions of the product shall be fixed in order that the roof constructed with these products can
fulfil its functions.
4.3.3.2 Thickness
Measurements of the thickness of manufactured products, such as profiled sheets, shall be made not
less than 40 mm from the edges in accordance with EN ISO 9445.
Products shall be classified according to tolerance on thickness as follows:
— class 1: full minus nominal normal tolerance according to EN ISO 9445;
— class 2: 1/2 minus nominal normal tolerance according to EN ISO 9445;
— class 3: zero minus tolerance.
NOTE 1 For products of class 3, mechanical resistance is calculated using the minimum thickness of the steel
core guaranteed by the manufacturer.
NOTE 2 National regulations will state the class of product that it will be possible to use.
4.3.4 Dimensional tolerances for the profiled sheets
Tolerances for the profile shape of the product and methods of measurement shall be in accordance
with Annex B.
4.3.5 Safety in case of fire
4.3.5.1 Reaction to fire
The performance shall be defined according to the Euroclass system. EN 14782 defines the Single
Burning Item (SBI) specimen when required, including direct and extended application rules.
NOTE National regulations fix the reaction to fire level required for different building types.
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4.3.5.2 Resistance to fire
When required, the performance shall be defined according to the Euroclass system.
NOTE The resistance to fire concerns only the E, I and W classification and does not concern the R-
classification.
4.3.5.3 External fire roof performance
When required, the performance shall be defined according to the euroclass system.
NOTE The external fire roof performance can be Broof t1, Broof t2, Broof t3 or Broof t4.
5 Test methods
5.1 Material properties
Test methods for material properties are given in EN 10088-4 and for tin coated stainless steel in
accordance with EN 10202.
5.2 Structural properties
The performance of the product under distributed load shall be determined in accordance with 4.3.1
and 4.3.2.
When required (i.e. for roof products), the performance of the product under concentrated load shall be
declared by the manufacturer with reference to the relevant European standards (i.e. EN 14782).
The performance of the product under concentrated load shall be stated by the manufacturer with
reference to the method used to determine the results.
NOTE 1 Safety under the load from people and the risk of permanent deformation is dependent on many
factors, such as slope of roof, method of installation, etc.
NOTE 2 Methods for testing the strength under concentrated load are not yet available on a European level.
Information on national standards is given in Annex C. Rules for installation are given in some national codes.
6 Designation
Products covered by this document shall be designated as follows:
— type of product according to the designation of the manufacturer;
— European standard number;
— nominal thickness and thickness class (see 4.3.3.2);
— material (designation of material) (see 3.5 and 4.2);
— length and in addition for tiles length of step.
EXAMPLE Profile 45 for roofing and cladding, thickness 0,6 mm, class 1; Length 4200 mm; X5CrNi18–10;
EN 508-3.
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7 Marking, labelling, packaging, special ordering conditions, transport, storage
and handling
7.1 Marking and labelling
At least the following information shall be marked on every pack, coil, bundle or delivery unit:
— name or registered identification of the manufacturer;
— product designation (see Clause 6);
— order or manufacturing batch number;
— dimension and quantity;
— gross mass (kg).
7.2 Packaging and special ordering conditions
The packaging requirements and any special requirements to take account of particular conditions shall
be agreed between manufacturer and purchaser at the time of ordering.
7.3 Transport, storage and handling
Any instruction regarding transport, storage and handling shall be clearly visible on the package.
The packages should be supported by means of battens providing sufficient space to permit good
ventilation while avoiding any permanent deformation of the sheets. The packages should be inclined in
order to promote drainage.
The packages should be stored under a covered warehouse or under a cover made from tarpaulin over
a frame. The frame should allow sufficient space between tarpaulin and packages to allow air to
circulate.
NOTE 1 For decorative applications material can be delivered with a protective film.
At delivery, the goods should be handled with care to maintain the quality of the product.
The products should be dispatched and stored in conditions which protect them from humidity and
condensation.
NOTE 2 Moisture, especially condensation in packages, can cause stains. If lengthy exposure in a humid
atmosphere is likely there can be further aesthetic change of the products.
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Annex A
(informative)
Physical properties
Physical properties relevant to the material grades used are listed in Table A.1.
Table A.1 — Relevant physical properties
Steel Steel Density Thermal Electrical Average Modulus of
grade number conductivity resistivity dilatation elasticity
20 °C 20 °C coefficient 20 °C
20 °C
3 −6 −1 2
g/cm 2 10 K kN/mm
W
Ω x mm
mx K
m
1.4000 30 0,6 10,5
1.4016 25 0,6 10,0
1.4113 25 0,7 10,0
1.4509 7,7 25 0,7 10,0 220
Ferritic
1.4510 25 0,6 10,0
1.4521 23 0,8 10,4
1.4526 30 0,7 11,7
1.4301
Austenitic 7,9 15 0,73 16,0 200
1.4307
Austenitic 1.4401
/molybde 8,0 15 0,75 16,0 200
1.4404
num
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Annex B
(normative)
Dimensional tolerances
B.1 Tolerances for trapezoidal sheets
B.1.1 General
The following tolerances shall apply to measurements in the factory, before delivery and shall be
corrected for temperature variations to 20 °C where appropriate.
The tolerances are maxima, a roofing system may require smaller tole
...
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