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BSI 21/30422046 DC:2021 Edition

BSI 21/30422046 DC:2021 Edition

$13.70

BS EN 12326-3. Slate and stone for discontinuous roofing and external cladding – Part 3. Specifications for schist and schistose stones

Published By Publication Date Number of Pages
BSI 2021 33
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This document specifies characteristics of schist and schistose stones (see 3.1) intended to be used for assembly into discontinuous roofing and external cladding. This document specifies procedures for assessment and verification of constancy (AVCP) of performance of characteristics of schist and schistose stones. This document does not cover the following: – slate and carbonate slate products (see EN 12326-1:2014 and EN 12326-2:2011); – schist and schistose products, used as wall cladding, which are either bonded with adhesive or fixed with dowels and cramps (see EN 1469:2015); – treated products; – installation or construction specific requirements.

PDF Catalog

PDF Pages PDF Title
8 1 Scope
2 Normative references
3 Terms and definitions
11 4 Characteristics
4.1 Dimensional variation
4.2 Water permeability
4.3 Mechanical resistance
4.4 Durability against freeze–thaw
12 4.5 Durability against thermal cycles
4.6 Reaction to fire
4.7 External fire performance
4.8 Release of dangerous substances
5 Testing, assessment and sampling methods
5.1 Dimensional variation
5.1.1 General
13 5.1.2 Nominal and individual thickness
5.1.3 Length and width, rectangularity and flatness
5.1.4 Format of irregular stones and special shaped products
5.2 Water permeability
14 5.3 Mechanical resistance
5.4 Durability against freeze–thaw
5.5 Durability against thermal cycles
15 5.6 Reaction to fire
5.7 External fire performance
5.8 Release of dangerous substances
6 Assessment and verification of constancy of performance – AVCP
6.1 General
6.2 Assessment of performance
6.2.1 General
16 6.2.2 Test samples, testing and assessment criteria
17 6.3 Verification of constancy of performance
6.3.1 Factory production control (FPC)
6.3.1.1 General
18 6.3.1.2 Equipment
6.3.1.3 Raw materials and components
6.3.1.4 Traceability and marking
6.3.1.5 Product testing and evaluation
19 7 Product designation
7.1 Classification
20 7.2 Denomination
7.3 Petrographic description
7.4 Appearance
7.4.1 General
7.4.2 Reference sample, visual inspection and acceptance criteria
7.5 Typical formats for roofing stones
21 8 Marking, labelling and packaging
23 Annex A (normative)Sampling procedures
A.1 General
A.2 Principles of sampling
A.3 Taking bulk samples
A.4 Sampling and a sampling plan
24 A.5 Sampling apparatus and methods
A.5.1 General
A.5.2 Sampling from quarries (solid rock)
A.5.2.1 General
A.5.2.2 Identification of anisotropy and orientation of samples
A.5.2.3 Sampling for petrographic analysis
A.5.2.4 Sampling for physical testing
A.5.3 Sampling from production plants, consignments etc
A.6 Marking, packaging and dispatch of the samples
25 A.7 Sampling report
26 Annex B (normative)Statistical evaluation
B.1 Scope
B.2 Symbols and definitions
27 B.3 Calculation of Lower Expected Value
B.4 Calculation of Higher Expected Value
28 B.5 Student t-test
30 Annex ZA (informative)Relationship of this European Standard with Regulation (EU) No 305/2011
31 ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP)
ZA.3 Assignment of AVCP tasks

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