ISO 10471:2018
Glass-reinforced thermosetting plastics (GRP) pipes — Determination of the long-term ultimate bending strain and the long-term ultimate relative ring deflection under wet conditions
This document specifies a method for determining by extrapolation the long-term ultimate ring bending strain and the calculation of the long-term ultimate relative ring deflection of glass-reinforced thermosetting plastics (GRP) pipes, under wet conditions.
Two methods of loading are given, one using plates the other beam bars.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 Compressive loading machine
5.2 Force application surfaces
5.2.1 General arrangement
5.2.2 Plates
5.2.3 Beam bars
5.3 Water container
5.4 Measuring devices
6 Test piece
7 Number of test pieces
8 Determination of the dimensions of the test piece
8.1 Length
8.2 Wall thickness
8.3 Mean diameter
9 Conditioning
10 Procedure
11 Calculation
11.1 Extrapolation of the strain data to obtain the x-year value, εx, wet
11.2 Calculation of the long-term ultimate relative ring deflection under wet conditions, yu, wet, x/dm
12 Test report
Annex A (informative) Equal increments of lg (time in h)
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Related Information
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AS/NZS 1254:2010
PVC-U pipes and fittings for stormwater and surface water applications
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AS/NZS 1254:2010 A1
PVC-U pipes and fittings for stormwater and surface water applications: Amendment 1 -
AS/NZS 1254:2010 A2
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AS/NZS 1254:2010 A3
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 Compressive loading machine
5.2 Force application surfaces
5.2.1 General arrangement
5.2.2 Plates
5.2.3 Beam bars
5.3 Water container
5.4 Measuring devices
6 Test piece
7 Number of test pieces
8 Determination of the dimensions of the test piece
8.1 Length
8.2 Wall thickness
8.3 Mean diameter
9 Conditioning
10 Procedure
11 Calculation
11.1 Extrapolation of the strain data to obtain the x-year value, εx, wet
11.2 Calculation of the long-term ultimate relative ring deflection under wet conditions, yu, wet, x/dm
12 Test report
Annex A (informative) Equal increments of lg (time in h)