CEN/TC 128

Date: 2024-11

prEN 508‑2:2025

Secretariat: NBN

Roofing and cladding products from metal sheet — Specification for self-supporting products of steel, aluminium or stainless steel sheet — Part 2: Aluminium

Dachdeckungs- und Wandbekleidungselemente aus Metallblech — Spezifikation für selbsttragende Bedachungselemente aus Stahlblech, Aluminiumblech oder nichtrostendem Stahlblech — Teil 2: Aluminium

Produits de couverture et bardage en tôle métallique — Spécification pour les plaques de couverture en tôle d'acier, d'aluminium ou d'acier inoxydable — Partie 2 : Aluminium

Contents Page

European foreword 3

Introduction 4

1 Scope 5

2 Normative references 5

3 Terms and definitions, symbols and abbreviations 5

3.1 General 6

3.2 Material definitions 6

3.3 Profile definitions 6

3.4 Symbols and abbreviations 12

4 Requirements 12

4.1 General 12

4.2 Materials 13

4.2.1 Aluminium 13

4.2.2 Organic coatings 14

4.2.3 Anodizing 14

4.3 Products 14

4.3.1 Mechanical resistance 14

4.3.2 Design (calculation and tests) of mechanical resistance 15

4.3.3 Dimensions 15

4.3.4 Dimensional tolerances for the profiled sheet 15

4.3.5 Safety in case of fire 16

5 Test methods 16

5.1 Material properties 16

5.2 Surface properties 16

5.3 Mechanical properties 16

6 Marking, labelling and packaging 17

6.1 Marking and labelling 17

6.2 Packaging and special ordering conditions 17

6.3 Transport, storage and handling 17

Annex A (normative) Dimensional tolerances 19

Annex B (informative) Test methods for concentrated load 36

Bibliography 37

European foreword

This document (prEN 508‑2:2025) has been prepared by Technical Committee CEN/TC 128 “Roof covering 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 508‑2:2019.

prEN 508‑2:2025 includes the following significant technical changes with respect to EN 508‑2:2019:

— The list of aluminium alloys suitable for roofing and cladding products has been extended.

— These changes or additions can be found in the following Clauses and subclauses: 4.2.1.

This document has been prepared under a standardization request addressed to CEN by the European Commission. The Standing Committee of the EFTA States subsequently approves these requests for its Member States.

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.

Introduction

Table 1 indicates the position of this document in the CEN framework of standards concerning roofing and cladding products of metal sheet.

Table 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 as a whole in relation to the environment and conditions of use.

This part of EN 508 specifies requirements for self-supporting external profiled sheets for roof covering, wall cladding, lining and liner tray products for discontinuous laying made from aluminium sheet with or without surface treatment (additional organic coatings or anodising).

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 made available on the market before being 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 and liner trays 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.

This document does not cover products for structural purposes, i.e. it does cover products used in structural class III (according to EN 1999‑1‑4), it does not cover products used in constructions of structural classes I and II (according to EN 1999‑1‑4) 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 or cladding system and execution of connections and flashings are included.

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 485‑1, Aluminium and aluminium alloys — Sheet, strip and plate — Part 1: Technical conditions for inspection and delivery

EN 485‑4, Aluminium and aluminium alloys — Sheet, strip and plate — Part 4: Tolerances on shape and dimensions for cold-rolled products

EN 1396, Aluminium and aluminium alloys — Coil coated sheet and strip for general applications — Specifications

EN 14782, Self-supporting metal sheet for roofing, external cladding and internal lining — Product specification and requirements

EN ISO 7599, Anodizing of aluminium and its alloys — Method for specifying decorative and protective anodic oxidation coatings on aluminium (ISO 7599)

For the purposes of this document, the terms and definitions given in EN 485‑1 and the following apply.

ISO and IEC maintain terminology 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/

NOTE Wherever the term aluminium is used it is meant unalloyed or alloyed aluminium.

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, insulation, membrane), and transmit these loadings to spaced structural supports

3.2.1

temper

material conditions after a production stage, for example mechanical treatment and/or heat treatment, intended to give the material physical and/or metallurgical properties

3.2.2

organic coated aluminium sheet

painted, post coated, laminated or coil coated (continuously organic coated) aluminium on one or on both sides

3.2.3

anodized aluminium sheet

aluminium with an anodic coating, produced by an electrolytic oxidation process in which the surface of the aluminium is converted to a mainly oxide coating having protective, decorative or functional properties

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, web and valley may be stiffened

Note 1 to entry: See Figures 2, 3, 4 and 5.

Note 2 to entry: The names for various parts of typical trapezoidal profiled sheets are given in Figure 6 and Figure 7.

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

Key

Figure 6 — Definitions of the parts of typical trapezoidal profiled sheets

Key

Figure 7 — Definitions of the parts of typical trapezoidal profiled sheets

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 8.

Note 2 to entry: Additional definitions for sinusoidal profiles in are given in Figure 9.

Key

Figure 8 — Part of typical sinusoidal profiled sheet

Key

Figure 9 — Definitions of the parts of typical sinusoidal profiled sheets

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: The profile shape is designed to allow the formation of side laps on site.

Note 2 to entry: As these types of roof covering and cladding products are used in proprietary roofing and cladding systems, no structural requirements are given within this part of EN 508.

Note 3 to entry: These products are normally designed by testing.

Note 4 to entry: See Figures 10 and 11.

Figure 10 — Typical standing seam profile

Figure 11 — Typical concealed fix profile

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 part of EN 508.

Note 3 to entry: These products are normally designed by testing.

Note 4 to entry: See Figures 12a, 12b and 12c.

Note 5 to entry: Additional definitions for tile profiles are given in Figure 13.

Figure 12 — Typical tile profiles

Key

Figure 13 — Definitions of the parts of typical tile

For the purposes of this document, the following symbols and abbreviations apply.

The product should 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 used to designate the aluminium alloy, the type and thickness of the organic coating are those of the standards referred to in Clause 2.

Product testing should be provided to a defined schedule. A permanent quality system should be adopted by the manufacturer^[1]1.

Aluminium alloys given in Table 2 are suitable provided that their properties conform to the values given in the relevant material standards (EN 485‑2, EN 573‑3).

Table 2 — Alloys of aluminium

Temper shall be chosen so that the ultimate tensile strength is not lower than 150 MPa.

Alloy and temper are chosen to give corrosion resistance, strength and formability. Specification of alloy, temper and coating finish should be agreed between purchaser and supplier at the time of ordering.

Tolerances on shape and dimensions shall be in accordance with EN 485‑4.

The main external weather resistant organic coatings suitable for application to aluminium substrates are given in Table 3.

Table 3 — Factory applied organic coatings

NOTE Aluminium sheet is used either without coating or with organic coatings mainly for aesthetic reasons.

It should be noted that different coating systems behave in different ways under various climatic conditions. The primer and/or adhesive should be chosen taking into account which type of substrate, pre-treatment and top coat are used.

Reverse side painting or coating is used if being required for handling and storage reasons as well as for corrosion protection in some installation conditions.

Performance and test methods for coil coated aluminium shall be in accordance with EN 1396.

Special coatings or films may be applied to the reverse side to reduce the dripping of moisture caused by condensation.

Roofing and cladding products may have also anodised surfaces.

Product specifications for anodised aluminium shall be in accordance with EN ISO 7599.

The manufacturer shall state the cross‐sectional, material and member characteristics required for design and use‐related verification at the place of use.

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 cladding.

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 roof.

NOTE 2 The load level, the levels of safety and permissible deflection are defined in national building regulations.

The mechanical performance of the product shall be declared together with 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.

General

The dimensions of the product shall be fixed in order that the roof or cladding constructed with these products can fulfil its functions.

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 −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 −2;

— class 2: 1/2 minus nominal normal tolerance according to EN ISO 9445‑1 and −2;

— class 3: zero minus tolerance.

NOTE 1 For products of class 3, mechanical resistance is calculated using the minimum thickness of the aluminium core provided by the manufacturer.

NOTE 2 National regulations can state the class of product that it will be possible to use.

Tolerances for the profile shape of the product and methods of measurement shall be in accordance with Annex B.

General

Aluminium is non-combustible. It will not burn and will not support combustion. Its melting point is approximately 630 °C. As a result it will melt in an intense fire. It is essential that the effect of a fire is evaluated after studying the whole structure.

Reaction to fire

The performance shall be defined according to the “euroclass system” (as in 4.3.5.2 + 4.3.5.3). 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 the different building types.

Non-organically coated products are considered to satisfy the requirements for performance Class A1 of the characteristic reaction to fire in accordance with the provisions of EC Decision 96/603, as amended, without the need for testing.

Products with a polyester coating having a maximum nominal thickness of 25 μm and a PCS up to 1 MJ/m2 (included) or a mass ≤ 70 g/m2 are considered to satisfy the requirements for reaction to fire performance Class A1 without further testing in accordance with Commission decision 2010/737/EC.

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).

Test methods for material properties are given in the appropriate material standards as detailed in 4.2.

Test methods for surface properties are given in EN 1396.

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.

The performance of the product under concentrated load shall be quoted 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, etc.

Designation

Products covered by this document shall be designated as follows:

— type of product use (e.g. cladding, roofing, etc.);

— reference to this document (prEN 508-2:2025);

— 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, the length of the step.

EXAMPLE Profile 45 for roofing and cladding, thickness 0,9 mm, class 1;

length 4200 mm; EN AW-3103, H18

Side 1: PVDF 25 µm colour RAL 24

Side 2: AY 25 µm colour RAL 10

EN 508‑2

At least the following information shall be attached to every pack, 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).

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.

Any instructions 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 package 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 Moisture, in particular condensation inside packages, can lead to the formation of stains (e.g. black marks), and if there is prolonged contact with moisture, can cause aesthetic change.

During transportation, dark spots can appear on light surfaces as a result of friction in contact with uncoated aluminium when packing allows movement between neighbouring surfaces.

NOTE 2 If severe service conditions are expected during transportation, storage or processing, the product can be supplied with an additional protection of a temporary, strippable film, wax or oil.

Type, thickness, adhesion properties, formability, tear strength and light fastness should be taken into consideration when choosing protective films. All protective films can be exposed to outdoor weathering for only a limited period without deterioration.

1. 
   (normative)
   
   Dimensional tolerances
   1. Tolerances for trapezoidal sheets
      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 or cladding system may require smaller tolerances for the sheets to fit together to form a functional roof or cladding on one building.

Methods suitable for the measurement of the values are given in A.4.

The following values are defined with tolerances:

• • 1. Depth of profile

The depth of the profile (h) shall be measured as the distance between the crown and valley measured on the same side of the sheet (see Table A.1 and Figure A.1), at 200 mm from the sheet end.

Table A.1 — Tolerance on depth of profile

Dimensions in millimetres

Figure A.1 — Depth of profile

• • 1. Depth of stiffeners

The depth of any stiffeners, on crown, valley or web shall be measured on a line across the sheet at 200 mm from the end.

Tolerances: ± 1 mm.

• • 1. Pitch

The pitch of the profile (see Figure A.2) shall be the distance between the centre of adjacent ribs, measured at 200 mm from sheet ends.

Key

Figure A.2 — Pitch

• • 1. Widths of crown and valley

The widths of a crown (b1) and valley (b2) (see Figure A.3) shall be measured at 200 mm from the sheet ends.

Tolerances:

Figure A.3 — Widths of crown and valley

• • 1. Cover width

The cover width, w, shall be stated by the manufacturer.

Measurements of cover width w1 and w2 shall be taken at a distance of 200 mm from the sheet ends as shown in Figure A.4. Both measurements shall be within the specified tolerance selected for the appropriate sheet profile depth (h).

A third measurement w3 of cover width shall be made across the centre line of the sheet to determine the contraction or bulging of the profile. This w3 measurement shall be within the stated tolerance referred to the average value for w1 and w2 (i.e. ).

NOTE h is the nominal profile depth (see A.1.2).

Dimensions in millimetres

Key

Figure A.4 — Cover width

• • 1. Radius of bends

The measurement shall be carried out on the inside radii at a distance of at 200 mm from one end of the sheet as shown in Figure A.5.

Tolerances:

Dimensions in millimetres

Key

Figure A.5 — Radius of bends

• • 1. Deviation from straightness

The deviation of straightness from the theoretical straight line shall be defined as the dimension δ in Figure A.6.

Tolerance: 2,0 mm/m of sheet length, not exceeding 10 mm.

Dimensions in millimetres

Key

Figure A.6 — Deviation of straightness

• • 1. Deviation from squareness

The deviation from squareness of the profiled sheet end shall be defined as the dimension S in Figure A.7.

Tolerance: S ≤ 0,5 % of the nominal cover width (w).

NOTE The nominal cover width (w) is specified in A.1.6.

Figure A.7 — Squareness

• • 1. Length

The length (l) shall be measured along the centre axis of the sheet as shown in Figure A.8.

Specific requirements may be agreed upon by the manufacturer and the purchaser at the time of ordering.

Key

Figure A.8 — Sheet length

• • 1. Deviation of side lap

The deviation from a straight edge of the sheet side lap shall be defined as dimension D in Figure A.9.

Tolerance: Maximum deviation D =  ± 2 mm on a length of 500 mm.

Dimensions in millimetres

Figure A.9 — Side lap deviation

Alternatively to the preceding requirement, it may be agreed that the side lap ripple shall be such that, in the conditions of the test defined in A.4.12, the tongue of the gauge will not completely penetrate between the two sheets when overlapped, 500 mm or more away from the two ends.

• • 1. Curve radius and angles

The radius and angle of curved profiled sheets shall be defined as shown in Figure A.10.

Tolerances for either the internal or the external radius and the angle shall be agreed between the supplier and the purchaser at the time of ordering.

NOTE The radius can be measured either to the internal or external surface of the profiled sheet.

Key

Figure A.10 — Curved sheet

• 1. Tolerances for sinusoidal profiles

No tolerances for sinusoidal profiles are given in this document.

NOTE Sinusoidal profiles are produced for a wide range of uses in addition to roofing or cladding, and tolerances can be found in national standards.

• 1. Tolerances on tiles
     1. General

The tolerances are maxima; the producer may give tighter tolerances for the product to fit the system and achieve easy installation. Methods suitable for the measurements of the values are given in A.4.

The following values are defined with tolerances:

• • 1. Depth of tile

The depth of a tile (h) shall be defined by the distance between the surfaces of crown and valley measured on the same side of the sheet, see Figure A.11

Tolerances: ± 2 mm

Dimensions in millimetres

Figure A.11 — Depth of tile

• • 1. Web angular displacement (Figure A.12)

Tolerances: ± 2°

Key

Figure A.12 — Web angular displacements

• • 1. Pitch

The pitch (p) of the profile (see Figure A.13) shall be the distance between the centre of adjacent ribs. Measurements shall be taken on the top surface directly over the step.

NOTE The step is illustrated in Figure A.16.

Key

Figure A.13 — Pitch

• • 1. Width of crown and valley (Figure A.14)

Tolerances: ± 1 mm

Key

Figure A.14 — Width of crown and valley

• • 1. Cover width

The nominal cover width (w) (see Figure A.15) shall be stated by the manufacturer.

Tolerances: ± 0,5 % of the nominal cover width.

Key

Figure A.15 — Cover width

• • 1. Radius of bends

The measurement shall be carried out on the inside radii (r) as shown in Figure A.16.

Tolerances: ± 1,5 mm

Key

Figure A.16 — Radius of bends

• • 1. Deviation from straightness

The deviation from straightness or parallel bulging of both edges from the theoretical straight line is defined as the dimension δ in Figure A.17.

Tolerance: δ ≤ 2 mm/m, maximum 9 mm on the total length.

Figure A.17 — Deviation from straightness

• • 1. Deviation from squareness

The deviation from squareness of the tile sheet end shall be defined as dimension (S) in Figure A.18.

Tolerances: ± 6 mm

Figure A.18 — Deviation from squareness

• • 1. Length

The length shall be measured along the centre line of the tile sheet.

Tolerances: ± 2 mm on each step

±6 mm on total length of the tile sheet.

• • 1. Contraction or bulging

Contraction or bulging over the length of the tile sheet from the theoretical straight edge shall be defined as the dimension δ in Figures A.19 a) and b).

Tolerances: ± 2 mm per metre sheet length with a maximum of 9 mm

Key

Figure A.19 — Contraction or bulging

• 1. Methods for measuring profiles
     1. General

The measurements shall be made in the factory, before delivery and corrected to a temperature of 20 °C where appropriate.

Measurements of depth of profile depth of stiffeners, pitch, crown, valley and cover width shall be carried out at 200 mm from the profiled sheet end.

When measurements are taken, the profiled sheet should be placed on at least three equally spaced supports which are on a rigid flat surface.

Measurements of distances shall be taken with an instrument capable of taking measurements to an accuracy of at least 0,1 mm for linear measurements up to and including 10 mm, an accuracy of at least 0,5 mm greater than 10 mm and up to and including 1 000 mm and an accuracy of at least 1,0 mm when measuring distances exceeding 1 000 mm. When measuring radii, the instrument shall be capable of taking measurements to an accuracy of at least 0,5 mm.

The following methods shall be used, unless another method has been demonstrated to provide results of the required accuracy.

• • 1. Depth of profile

The depth of each valley across the sheet shall be measured by means of a template or a measuring rule at both sides of the valley as illustrated in Figure A.20. The tolerances in A.1.2 and A.3.2 apply to the average value for each valley.

Dimensions in millimetres

Key

Figure A.20 — Dimensional check for depth of profile h

• • 1. Depth of stiffeners

The depth of each stiffener shall be measured on a line across the sheet by means of a template or measuring rule. The tolerance in A.1.3 applies to each stiffener.

• • 1. Pitch

The measurements shall be made by one of the following methods, of which a) most closely corresponds to the definition (see 3.4):

a) as the distance measured between two plates placed on the webs, as illustrated in Figure A.21;

b) as the deviation from a template;

c) by means of a profile gauge as illustrated in Figure A.22.

Key

Figure A.21 — Dimensional check for pitch

Key

Figure A.22 — Dimensional check for pitch p and cover width w using calibrated gauge

• • 1. Width of crown and valley

The widths of crowns and valleys shall be measured on a line across the sheet by means of a template or as the distance between two plates placed on the appropriate webs as illustrated for a crown in Figure A.23.

The appropriate tolerance in A.1.4 or A.3.5 applies to each measurement.

Figure A.23 — Dimensional check for width of crown

• • 1. Cover width

The cover width of the sheet shall be measured across the sheet at three positions as the distance between two plates placed on the side webs (method analogous to A.4.4) or by means of a gauge as illustrated in Figure A.23.

• • 1. Radius of bends

The radius of bends shall be measured on the inside of the bend. The appropriate tolerance in A.1.7 and A.3.7 applies to each bend.

• • 1. Straightness

The straightness of a sheet shall be measured from a thin cord stretched between two points on the same edge at 200 mm from each end of the sheet. The measurement shall be made at the centre of the sheet.

• • 1. Squareness

The squareness of a profiled sheet shall be determined as illustrated in Figures A.7 and A.19.

• • 1. Length

The length shall be measured along the theoretical centre axis of the sheet as illustrated in Figure A.8.

• • 1. Side laps

The deviation (D) of the side lap edge shall be measured as the distance from a 500 mm straight edge as illustrated in Figure A.24.

Dimensions in millimetres

Key

Figure A.24 — Dimensional check for deviation of side lap using gauge

• • 1. Side lap ripple

A method to check the side lap ripple consists of trying to insert the tongue of a rigid gauge 1,5 mm thick between the side ribs of two sheets which are overlapped in the normal method of laying on supports located in the same horizontal plane as shown in Figure A.25.

Dimensions in millimetres

Key

Figure A.25 — Method of checking edge ripple

When the side lap includes a stiffening bend (see Figure A.26), the zone covered by the stiffening bend of the side lap is not taken into account; the depth of the gauge tongue should in this case be increased accordingly.

Key

Figure A.26 — Side lap with a stiffening bend

1. 
   (informative)
   
   Test methods for concentrated load

No European Standard test methods for determining concentrated load are available but the following standards may be referred to:

— DIN 18807‑7, Trapezoidal sheeting in buildings - Part 7: Aluminium trapezoidal sheeting and their connexions; determination of load bearing capacity by test;

— NF P34‑503‑1, Profiled sheeting made of coated or non-coated steel sheet and panels - Part 1: Bending tests under linear loads and/or under concentrated loads;

— NF P34‑503‑2, Profiled sheeting made of coated or non-coated steel sheet and panels — Part 2: National complements to the tests defined in NF EN 1993‑1‑3;

— NT Build 036, Floor and roof components: Resistance to concentrated static load.

Bibliography

[1] EN 485‑1, Aluminium and aluminium alloys — Sheet, strip and plate — Part 1: Technical conditions for inspection and delivery

[2] EN 485‑2, Aluminium and aluminium alloys — Sheet, strip and plate — Part 2: Mechanical properties

[3] EN 515, Aluminium and aluminium alloys — Wrought products — Temper designations

[4] EN 573‑3, Aluminium and aluminium alloys — Chemical composition and form of wrought products — Part 3: Chemical composition and form of products

[5] EN 1999‑1‑4:2023, Eurocode 9 — Design of aluminium structures — Part 1-4: Cold-formed structural sheeting

[6] EN 10204, Metallic products — Types of inspection documents

[7] EN 12258‑1, Aluminium and aluminium alloys — Terms and definitions — Part 1: General terms

[8] EN ISO 9001, Quality management systems — Requirements (ISO 9001)

[9] DIN 18807‑7, Trapezoidal sheeting in buildings — Part 7: Aluminium trapezoidal sheeting and their connexions; determination of load bearing capacity by test

[10] NF P34‑503‑1, Profiled sheeting made of coated or non-coated steel sheet and panels — Part 1: Bending tests under linear loads and/or under concentrated loads

[11] NF P34‑503‑2, Profiled sheeting made of coated or non-coated steel sheet and panels — Part 2: National complements to the tests defined in NF EN 1993‑1‑3

[12] NT Build 036, Floor and roof components: Resistance to concentrated static load

1. 1 E.g. a quality management system based on EN ISO 9001. ↑