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BS ISO 24322:2024

BS ISO 24322:2024

$142.49

Timber structures. Methods of test for evaluation of long-term performance – Wood-based products in bending

Published By Publication Date Number of Pages
BSI 2024 30
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PDF Catalog

PDF Pages PDF Title
2 undefined
7 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Symbols (and abbreviated terms)
11 5 Reference population
12 6 Sampling
6.1 Sampling method
6.2 Matched groups within a sample
6.3 Sample size
13 7 Sample conditioning prior to testing
8 Bending tests
8.1 Test method
8.1.1 General
8.1.2 Load location on specimens
8.1.3 Load configuration
14 8.1.4 Deformation measurements
8.1.5 Reporting failure results
8.2 Short-term tests
8.2.1 Loading rate
8.2.2 Reporting
15 8.2.3 Reference loads
8.3 Long-term tests
8.3.1 Loading levels
8.3.2 Initial loading rate
8.3.3 Deformation measurements
9 Evaluating new duration of load and creep factors
9.1 General
16 9.2 Sampling
9.2.1 Service class
9.2.2 Sample size
9.3 Specimen conditioning
9.4 Tests
9.4.1 General considerations for short-term tests
17 9.4.2 General considerations for the long-term tests
9.4.3 Long-term duration of load tests
9.4.4 Long-term creep tests
18 9.5 Evaluation of test results
9.5.1 Duration of load factor
19 9.5.2 Creep factor
20 10 Confirmation of duration of load and creep factors
10.1 General
10.2 Sampling
21 10.3 Tests required
10.3.1 Short-term bending tests
10.3.2 Long-duration bending tests
22 10.4 Acceptance criteria
10.4.1 Adequate strength
10.4.2 Decreasing creep rate
23 10.4.3 Fractional deflection, Df
10.5 Retest option
10.6 Acceptance criteria for retest at lower stress level
24 10.6.1 Average fractional deflection
10.6.2 Average creep-recovery
10.6.3 Average residual strength and stiffness
10.7 Interpretation of retests
11 Test report
26 Annex A (informative) Sampling for tests on duration of load and creep
27 Annex B (informative) Testing for sensitivity of duration of load and creep factors to environment
28 Bibliography

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BS ISO 24322:2024
$142.49