ISO 10904:2011
(Main)Fibre-cement corrugated sheets and fittings for roofing and cladding
Fibre-cement corrugated sheets and fittings for roofing and cladding
ISO 10904:2011 specifies technical requirements and methods for the inspection and testing of straight short and long fibre-cement profiled sheets and their fibre-cement fittings designed to provide the weather-exposed surfaces on roofs and internal and external walls of buildings. Products covered by ISO 10904:2011 can be used for other purposes, provided they comply with the appropriate national or international application code or standard. Some of the requirements of ISO 10904:2011 can apply, after agreement between manufacturer and purchaser, to curved profiled sheets. The type tests described in ISO 10904:2011 are not intended to evaluate the performance of the coating in isolation (color fastness, adhesion, etc.). Specific performance requirements for coatings are referenced in other International Standards or national standards. ISO 10904:2011 does not apply to fibre-cement profiled sheets and fittings reinforced with asbestos fibres.
Plaques ondulées en fibrociment et leurs accessoires pour couvertures et revêtements
General Information
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 10904
First edition
2011-08-01
Fibre-cement corrugated sheets and
fittings for roofing and cladding
Plaques ondulées en fibrociment et leurs accessoires pour couvertures
et revêtements
Reference number
ISO 10904:2011(E)
©
ISO 2011
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ISO 10904:2011(E)
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© ISO 2011
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ISO 10904:2011(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .2
4 Symbols, abbreviations and units .4
5 Product requirements .6
5.1 General .6
5.2 Categorization and classification .6
5.3 Dimensions and tolerances on nominal dimensions .8
5.4 Physical requirements and characteristics .9
5.5 Requirements concerning fire behavior .12
5.6 Product performance .12
5.7 Requirements concerning impact resistance.12
6 Evaluation of conformity .12
6.1 General .12
6.2 Type testing .12
6.3 Quality control (QC) system.13
6.4 Inspection of a consignment of finished products.15
7 Test requirements .15
7.1 General .15
7.2 Dimensional and geometrical tests .15
7.3 Physical performance tests.16
8 Marking.21
Annex A (normative) Consignment and inspection sampling .22
Annex B (normative) Dimensional and geometrical testing procedures.23
Annex C (normative) Test method to determine the breaking load and the bending modulus of
sheets .31
Annex D (normative) Test method to determine the bending moment of a sheet.35
Annex E (normative) Statistical method for determining the corresponding wet values or revised
dry specifications for the breaking load and/or bending moment when carrying out the
dry method of test or when testing prior to coating for quality control purposes.37
Annex F (normative) Test method to determine the apparent density .40
Annex G (normative) Test method to determine the water permeability of a sheet .42
Annex H (normative) Test method to determine the freeze-thaw performance of sheets and
fittings.44
Annex I (normative) Test method to determine the heat-rain performance of sheets.47
Annex J (normative) Test method to determine the warm water performance of long and short
sheets .49
Annex K (normative) Test method to determine the soak-dry performance of long and short
sheets .51
Bibliography.53
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ISO 10904:2011(E)
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 10904 was prepared by Technical Committee ISO/TC 77, Products in fibre reinforced cement.
This first edition of ISO 10904 cancels and replaces ISO 9384:1991 and ISO 9933:1995, which have been
technically revised.
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ISO 10904:2011(E)
Introduction
The performance of a roof or another building part constructed with the products covered by this International
Standard depends not only on the properties of the products as required by this International Standard, but
also on the design, construction and installation of the components as a whole relative to the environment and
the conditions of use.
This International Standard does not include calculations with regard to works, design requirements,
installation techniques, wind uplift or rain proofing of the installed sheets.
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INTERNATIONAL STANDARD ISO 10904:2011(E)
Fibre-cement corrugated sheets and fittings for roofing and
cladding
1 Scope
This International Standard specifies technical requirements and methods for the inspection and testing of
straight short and long fibre-cement profiled sheets and their fibre-cement fittings designed to provide the
weather-exposed surfaces on roofs and internal and external walls of buildings.
Products covered by this International Standard can be used for other purposes, provided they comply with
the appropriate national or international application code or standard.
Some of the requirements of this International Standard can apply, after agreement between manufacturer
and purchaser, to curved profiled sheets.
The type tests described in this International Standard are not intended to evaluate the performance of the
coating in isolation (colour-fastness, adhesion, etc.). Specific performance requirements for coatings are
referenced in other International Standards or national standards.
This International Standard does not apply to fibre-cement profiled sheets and fittings reinforced with asbestos
fibres.
2 Normative references
The following referenced documents are indispensable for the application 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 390:1993, Products in fibre-reinforced cement — Sampling and inspection
ISO 2602:1980, Statistical interpretation of test results — Estimation of the mean — Confidence interval
ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
ISO 3951-1, Sampling procedures for inspection by variables — Part 1: Specification for single sampling plans
indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic and a
single AQL
ISO 12468-1, External exposure of roofs to fire — Part 1: Test method
ISO 12468-2, External fire exposure to roofs — Part 2: Classification of roofs
EN 15057, Fibre cement profiled sheets — Impact resistance test method
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ISO 10904:2011(E)
3 Terms and definitions
For the purposes of this document, the following definitions apply.
3.1
profiled sheet
component whose cross-section consists of corrugations
NOTE 1 Examples are shown in Figure 1.
NOTE 2 The corrugations are defined by their pitch, a, and their height, h.
Key
A upper face
Figure 1 — Examples of categorization by height of profile
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ISO 10904:2011(E)
3.2
side corrugation
corrugation at the extreme end(s) of a cross section normally having a different pitch and height, normally
used for side overlapping
3.3
acceptance test
test to establish whether a batch of products conforms to a specification
NOTE 1 The test is performed on samples drawn from continuous production or from a consignment.
NOTE 2 Test methods, specifications and limit values are specified in this International Standard. Sampling levels and
acceptance criteria are specified in 6.3.
NOTE 3 See ISO 390.
3.4
type test
test performed to demonstrate conformity with the requirements of this International Standard or for the
approval of a new product and/or when a fundamental change is made in formulation and/or method of
manufacture, the effects of which cannot be predicted on the basis of previous experience
NOTE The test is performed on the as-delivered product, but is not required for each production batch.
3.5
acceptable quality level
AQL
maximum percent defective (or maximum number of defects per 100 units) that can be considered satisfactory
as a long-term average quality level in a sampling plan
NOTE When a manufacturer's process satisfies a sampling scheme with an AQL of 4 %, this indicates that 96 % of
the inspected product exceeds the specification. This type of specification provides the consumer with a clearly defined
lower quality boundary; this does not occur if acceptance is based solely on the average value of the measured property.
Examples of sampling schemes can be found in ISO 390, ISO 2859-1 and ISO 3951-1.
3.6
as delivered
in the same condition as that in which the producer intends to supply the product after completing all aspects
of the process, including maturing and, when appropriate, painting
3.7
reinforcement fibres
organic or inorganic reinforcement fibres for the manufacture of fibre-cement profiled sheets and fittings
complying with this International Standard
NOTE See 5.1.
3.8
apparent density
dry mass per unit volume based upon the volume of the sample calculated by water displacement or
equivalent
NOTE This is an average density of the material and pores, coated or uncoated (as delivered).
3.9
breaking load
maximum load achieved during the bending test and representing the load-bearing capacity of the sheets at
the test span
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ISO 10904:2011(E)
3.10
bending moment at rupture
moment at mid-span calculated from the maximum load during the bending test
3.11
short sheet
sheet with a length less than or equal to 0,9 m
3.12
long sheet
sheet with a length greater than 0,9 m
3.13
upper face
face normally exposed to the weather
3.14
under face
reverse of the upper face
3.15
ambient laboratory conditions
atmosphere for testing or storing and conditioning of samples, defined for the purpose of this International
Standard as a temperature of 23 °C ± 10 °C and a relative humidity of 50 % ± 20 %
3.16
fitting
components with particular shapes that are fitted to profiled sheets and complete, for instance, the roofing at
the verge, ridge and eaves, or perform functions such as ventilation, daylight-admission, etc.
3.17
bending modulus
modulus of elasticity derived from the load-deflection data recorded during the breaking load test
4 Symbols, abbreviations and units
For the purposes of this document, the following symbols and abbreviations are used.
a pitch of the corrugation, expressed in millimetres
b dimension of the specimen parallel to the supports in either the breaking load test (called width of the
specimen) or the bending moment test (called length of the specimen), expressed in millimetres
e thickness of the sheet, expressed in millimetres
E bending modulus, expressed in newtons per square millimetre, in the breaking load test
m
f deflection, expressed in millimetres, at approximately 15 % of the maximum load in the breaking load
0,15
test
f deflection, expressed in millimetres, at approximately 55 % of the maximum load in the breaking load
0,55
test
F load at rupture in the breaking load test or bending moment test, expressed in newtons
F load at rupture per metre width from the breaking load test, expressed in newtons per metre
s
F load, expressed in newtons, at 15 % of the maximum load in the breaking load test
0,15
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ISO 10904:2011(E)
F load, expressed in newtons, at 55 % of the maximum load in the breaking load test
0,55
h height of the corrugation, expressed in millimetres
h height of the edge of the descending corrugation, expressed in millimetres
od
h height of the edge of the ascending corrugation, expressed in millimetres
om
I moment of inertia of the section around a horizontal axis through the centre of gravity, expressed in
millimetres
l length of the sheet, expressed in millimetres
l clear span between the supports in the breaking load test or the bending moment test, expressed in
s
millimetres
L upper estimation at 95 % confidence level of the result X
1 1
L lower estimation at 95 % confidence level of the result X
2 2
m mass of the specimen, expressed in grams, after drying, when determining the apparent density
M bending moment at rupture per metre length from the bending moment test, expressed in
newton-metres per metre
R ratio of the estimation L to the estimation L
L 2 1
s standard deviation of the specimens with average X
1 1
s standard deviation of the specimens with average X
2 2
V apparent volume, expressed in cubic centimetres, of the specimens for the apparent density test
w width of the sheet, expressed in millimetres
x actual result obtained when dry-testing
o
X mean value of the bending test results of the control specimens (the first lot) for a type test
1
X mean value of the bending test results of the specimens (the second lot) after a type-test exposure
2
x minimum value for use as the specification for the dry method of test; this value is calculated at the
std
97,5 % lower confidence level from the value y specified for the wet method of test in this
std
International Standard
y value calculated from the value obtained from a specimen tested dry, which is the estimate at the
o
97,5 % lower confidence level of the value expected from a specimen tested wet
y minimum value specified in this International Standard for wet testing
std
α one of the coefficients of the regression line defined in Annex E
β one of the coefficients of the regression line defined in Annex E
ρ apparent density of specimen, expressed in grams per cubic centimetre
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ISO 10904:2011(E)
5 Product requirements
5.1 General
5.1.1 Composition
5.1.1.1 Fibre-cement profiled sheets and fittings shall consist essentially of cement or a calcium silicate
formed by the chemical reaction of a siliceous and a calcareous material, reinforced by fibres. The cement
shall comply with the relevant national standards in the country of manufacture.
Process aids, fillers, aggregates and pigments that are compatible with the fibre-reinforced cement may be
added.
5.1.1.2 Reinforcement may be one or a combination of the following materials:
⎯ cellulose fibre;
⎯ synthetic organic and/or inorganic fibre;
⎯ glass fibre.
5.1.1.3 These materials may have one or more of the following forms:
⎯ discrete elements randomly dispersed;
⎯ continuous strands or tapes;
⎯ nets or webs.
5.1.2 Manufacture
Fibre-cement profiled sheets may be formed either with or without pressure and cured either under natural or
accelerated conditions, to meet the specified requirements. The fibre-cement fittings may be formed by either
hand- or machine-moulding techniques.
5.1.3 Appearance and finish
The profiled sheets may be left with their natural color, or coloring matter may be added in the composition.
They may also receive adherent colored or uncolored coatings or impregnations on their surfaces. The upper
face shall have a generally smooth finish. Variations of the surface appearance that do not impair the
characteristics of the sheets as defined in this International Standard are permitted.
Edges shall be straight and clean and the sheets shall be square. Sheets may have one or more corners
pre-mitred or prepared for mitring and/or may be pre-drilled for fixing.
The fittings shall have a general appearance and finish compatible with the sheets with which they are being
used.
5.2 Categorization and classification
5.2.1 According to nominal height of corrugations
The fibre-cement profiled sheets are divided into five categories depending on the nominal height, h,
expressed in millimetres, of their corrugations, in accordance with Table 1. Examples of profiles are shown in
Figure 1.
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ISO 10904:2011(E)
Table 1 — Categories of fibre-cement profiled sheets
Height
h
mm
Category
Long sheets Short sheets
length > 0,9 m length ≤ 0,9 m
A 15 ≤ h ≤ 30 15 ≤ h ≤ 30
B 25 ≤ h ≤ 45 25 ≤ h ≤ 45
C 40 ≤ h ≤ 80 40 ≤ h ≤ 80
D 60 ≤ h ≤ 120 60 ≤ h ≤ 120
E 90 ≤ h ≤ 150 —
5.2.2 According to thickness
The thickness of the sheets may be
⎯ either approximately constant throughout the width of the profile (type A sheets); see Figure 2 a); or
⎯ vary regularly between the valley and the crown for corrugated sheets or between the lower part and the
upper part of ribs for asymmetrical section sheets, in the same cross-section (type B sheets); see
Figure 2 b).
a) Constant thickness b) Variable thickness
Figure 2 — Profiled sheet
5.2.3 According to minimum breaking load in bending for long sheets
For sheets with a length greater than 0,9 m (long sheets), each category of sheet is subdivided into classes
according to the value of the minimum breaking load in bending; see Table 3.
5.2.4 According to minimum bending moment at rupture for long and short sheets
For long and short sheets, each category of sheet is subdivided into classes according to the value of the
minimum bending moment at rupture; see Table 4.
National standards may choose one or more classes depending on the local conditions in the area of use.
National standards may specify, in addition of the minimum breaking load (in newtons per metre width), the
unit flexural strength (in newtons per square millimetre) provided that the manufacturer defines the profile,
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ISO 10904:2011(E)
including the side corrugations, and consequently indicates how to calculate the moment of inertia for the
specific corrugated surface section.
5.3 Dimensions and tolerances on nominal dimensions
5.3.1 General
The manufacturer shall specify the nominal dimensions, shapes and configuration of the edges of the fibre-
cement profiled sheets.
Fittings shall have nominal dimensions and shapes determined by the manufacturer and appropriate to the
corresponding fibre-cement profiled sheets with which the fittings are used.
5.3.2 Minimum thickness of profiled sheets
Each individual thickness measured according to B.5 shall be no less than the values in Table 2.
Table 2 — Minimum individual thickness of profiled sheets
Category Height Minimum individual thickness
h e
mm mm
Long sheets Short sheets
length > 0,9 m length ≤ 0,9 m
A 3,0 3,0
15 ≤ h ≤ 30
B 25 ≤ h ≤ 45 4,0 4,0
C 40 ≤ h ≤ 80 4,5 4,5
D 60 ≤ h ≤ 120 5,5 5,5
E 90 ≤ h ≤ 150 6,0 —
5.3.3 Number of corrugations
The number of corrugations considered for designation is the number of complete corrugations of the sheet.
5.3.4 Height of edges
The nominal height of edges of both the ascending and descending edges (see Figure 3) shall be specified in
national standards. This requirement applies only for sheets having an ascending corrugation on one side and
a descending corrugation on the other side.
Key
A reference plane (control surface)
Figure 3 — Measurement of the height of edges
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ISO 10904:2011(E)
5.3.5 Tolerances on nominal dimensions for sheets
The following tolerances shall apply to nominal dimensions given by the manufacturer:
a) tolerance on pitch, a, expressed in millimetres:
a ≤ 75 ± 1,5
75 < a ≤ 180 ± 2
180 < a ≤ 260 ± 2,5
260 < a ± 3
b) tolerance on height of corrugation, h, expressed in millimetres:
15 ≤ h ≤ 45 ± 2
45 < h ≤ 150 ± 3
c) tolerance on length: ± 10 mm;
+10
d) tolerance on width: mm;
−5
e) tolerance on thickness, e: the average thickness shall be within ± 10 %, but no more than ± 0,6 mm
of the nominal thickness;
f) out-of-squareness of sheet: ≤ 6 mm;
g) tolerance on height of edges: applies only for sheets having an ascending (rising) edge on one side and a
descending edge on the other side, and where it is required by the installation technique in order to
ensure weather tightness and/or geometrical fit; the manufacturer shall use the tolerances specified in
installation standards or regulations or, if none are given, he shall specify them in his literature.
5.3.6 Tolerances on nominal dimensions for fittings
The following tolerances shall apply to nominal dimensions given by the manufacturer:
a) tolerance on length: ± 10 mm;
b) tolerance on width: ± 10 mm;
c) tolerance on average thickness: ± 1 mm.
National standards may specify tolerances tighter than the ones specified in 5.3.5 and 5.3.6.
5.4 Physical requirements and characteristics
5.4.1 General
Mechanical and physical properties are normally determined on product as delivered. The results shall be
identified as applying to coated or uncoated material. Failure of the coating does not constitute
non-compliance of the product with this International Standard.
Testing of mechanical characteristics is performed with the upper face in compression. If required to establish
a relationship between upper and under face testing, where significant differences are expected or if required
for design purposes, the load shall be applied on the under face. Results obtained for under face testing are
not relevant for classification.
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ISO 10904:2011(E)
5.4.2 Mechanical characteristics
5.4.2.1 General
For non-roofing and cladding applications, alternative mechanical characteristics may be agreed between the
manufacturer and purchaser.
5.4.2.2 Minimum breaking load
When tested wet as specified in 7.3.2, using the method given in Annex C, long sheets shall have a minimum
breaking load at least equal to the values specified in Table 3.
5.4.2.3 Bending modulus — Modulus of elasticity
The manufacturer's literature may specify the minimum bending modulus (modulus of elasticity) of the profiled
sheets. When tested wet as specified in 7.3.2, using the method given in Annex C, the modulus of elasticity,
E , between 15 % of the maximum load, F , and 55 % of the maximum load, F , in the breaking load test
m 0,15 0,55
(see Figure C.2) shall not be less than the specified value.
Table 3 — Long sheets — Minimum breaking load per metre width
Minimum breaking load (BL), wet, by class of long sheet (length > 0,9 m)
N/m
Category
BL1 BL2 BL3 BL4 BL5 BL6 BL7 BL8 BL9 BL10 BL11
A 600 1 250 1 400 — — — — — — — —
B — 1 250 1 400 2 000 2 500 3 500 — — — — —
C — — 1 400 2 000 2 500 3 500 4 250 — — — —
D — — — — — 3 500 4 250 5 500 7 000 — —
E — — — — — — — — — 8 500 12 500
5.4.2.4 Minimum bending moment
When tested wet as specified in 7.3.3, using the method given in Annex D, long sheets and short sheets shall
have a minimum bending moment at rupture per metre length of sheet at least equal to the values specified in
Table 4.
Table 4 — Long sheets and short sheets —
Minimum bending moment per metre of length
Minimum bending moment (BM), wet, by class of long sheet (length > 0,9 m)
or short sheet (length ≤ 0,9 m)
Category
Nm/m
BM1 BM2 BM3 BM4 BM5 BM6 BM7
a
— —
A 20 25 30 40
12
B — 20 25 30 40 45 55
C — — 25 30 40 45 55
— — —
D 30 40 45 55
E — — — — 40 45 55
a
Applies to short sheets only.
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ISO 10904:2011(E)
5.4.3 Apparent density
The manufacturer's literature shall specify the minimum apparent density of the profiled sheets. When tested
in accordance with 7.3.4, using the method given in Annex F, the density shall not be less than the specified
value.
5.4.4 Water permeability
When tested for water permeability in accordance with 7.3.5, using the method given in Annex G, traces of
moisture may appear on the underface of the specimen, but in no instance shall there be any formation of
water drops.
NOTE Some national testing methods and performance requirements for the water permeability can differ from those
given in this International Standard.
5.4.5 Freeze-thaw performance
5.4.5.1 Long and short sheets
This test shall be carried out if local climatic conditions justify it or national standards specify it.
When freeze-thaw testing is required, profiled sheets are tested in accordance with 7.3.6, using the test
method given in Annex H. The ratio, R , of the lower versus the upper estimate mean values of the bending
L
moments for the exposed and unexposed specimens, determined at the 95 % confidence level after
100 freeze-thaw cycles, shall not be less than 0,70.
Any visible cracks, delamination or other visible alteration shall not be of such a degree as to affect the
performance in use.
5.4.5.2 Fittings
This test shall be carried out if local climatic conditions justify it or national standards specify it.
When freeze-thaw testing is required, fittin
...
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