ASTM D2925-14
(Test Method)Standard Test Method for Beam Deflection of “Fiberglass” (Glass-Fiber-Reinforced Thermosetting Resin) Pipe Under Full Bore Flow
Standard Test Method for Beam Deflection of “Fiberglass” (Glass-Fiber-Reinforced Thermosetting Resin) Pipe Under Full Bore Flow
SIGNIFICANCE AND USE
4.1 In the absence of deflection measurements from actual installed-above-ground piping, this test method may be used to evaluate the influence of span length on mid-span deflections at differing temperatures under full bore flow.
Note 3: A flat bearing area, small contact area, and narrow bearing width may induce high localized support interaction stresses, and constraints imposed by the supports may also adversely influence deflections and performance of the pipe.
SCOPE
1.1 This test method covers measurement of the deflection as a function of time of a specimen of fiberglass pipe supported on a flat non-arced support as a simple beam under full bore flow of water at elevated temperatures. Both glass-fiber-reinforced thermosetting-resin pipe (RTRP) and glass-fiber-reinforced polymer mortar pipe (RPMP) are fiberglass pipes.
Note 1: For the purposes of this standard, polymer does not include natural polymers.
1.2 This test method can be used to determine deflection at varying conditions by substituting other test media.
1.3 Deflections observed using this test method are representative only of piping supported as a simple beam under full bore flow which has one diameter of pipe overhanging at each support.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.
Note 2: There is no known ISO equivalent to this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:D2925 −14 An American National Standard
Standard Test Method for
Beam Deflection of “Fiberglass” (Glass-Fiber-Reinforced
1
Thermosetting Resin) Pipe Under Full Bore Flow
This standard is issued under the fixed designation D2925; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* D3567PracticeforDeterminingDimensionsof“Fiberglass”
(Glass-Fiber-Reinforced Thermosetting Resin) Pipe and
1.1 This test method covers measurement of the deflection
Fittings
asafunctionoftimeofaspecimenoffiberglasspipesupported
F412Terminology Relating to Plastic Piping Systems
on a flat non-arced support as a simple beam under full bore
flow of water at elevated temperatures. Both glass-fiber-
3. Terminology
reinforced thermosetting-resin pipe (RTRP) and glass-fiber-
3.1 General—DefinitionsareinaccordancewithTerminolo-
reinforced polymer mortar pipe (RPMP) are fiberglass pipes.
gies D883 and F412 and abbreviations are in accordance with
NOTE 1—For the purposes of this standard, polymer does not include
Terminology D1600, unless otherwise indicated.
natural polymers.
3.2 Definitions of Terms Specific to This Standard:
1.2 This test method can be used to determine deflection at
3.2.1 aggregate—a siliceous sand conforming to the re-
varying conditions by substituting other test media.
quirements of Specification C33, except that the requirements
1.3 Deflections observed using this test method are repre-
for gradation shall not apply.
sentative only of piping supported as a simple beam under full
3.2.2 fiberglass pipe—a tubular product containing glass
bore flow which has one diameter of pipe overhanging at each
fiber reinforcement embedded in or surrounded by cured
support.
thermosetting resin; the composite structure may contain
1.4 The values stated in SI units are to be regarded as the
aggregate, granular or platelet fillers, thixotropic agents,
standard. The values given in parentheses are provided for
pigments, or dyes; thermoplastic or thermosetting liners may
information purposes only.
be included.
NOTE 2—There is no known ISO equivalent to this standard. 3.2.3 reinforced thermosetting resin pipe (RTRP)—a fiber-
glass pipe without aggregate.
1.5 This standard does not purport to address all of the
3.2.4 reinforced polymer mortar pipe (RPMP)—a fiberglass
safety concerns, if any, associated with its use. It is the
pipe with aggregate.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Significance and Use
bility of regulatory limitations prior to use.
4.1 In the absence of deflection measurements from actual
2. Referenced Documents
installed-above-groundpiping,thistestmethodmaybeusedto
2
evaluatetheinfluenceofspanlengthonmid-spandeflectionsat
2.1 ASTM Standards:
differing temperatures under full bore flow.
C33Specification for Concrete Aggregates
D883Terminology Relating to Plastics
NOTE 3—A flat bearing area, small contact area, and narrow bearing
D1600TerminologyforAbbreviatedTermsRelatingtoPlas-
width may induce high localized support interaction stresses, and con-
straints imposed by the supports may also adversely influence deflections
tics
and performance of the pipe.
5. Apparatus
1
This test method is under the jurisdiction ofASTM Committee D20 on Plastics
and is the direct responsibility of Subcommittee D20.23 on Reinforced Plastic
1
5.1 Rigid Support with edges rounded to a 6-mm ( ⁄4-in.)
Piping Systems and Chemical Equipment.
radius, consisting of two uprights of a convenient height. The
Current edition approved Aug. 1, 2014. Published August 2014. Originally
ε1
uprights are to be spaced at a predetermined distance over
approved in 1970. Last previous edition approved in 2007 as D2925–01 (2007) .
DOI: 10.1520/D2925-14.
which deflection is to be determined as shown on Fig. 1. The
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
uprights shall have lateral guides, a saddle, groove, or inden-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
tation on the top to keep the pipe specimen from rolling off
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. when placed in position.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2925−14
FIG. 1 Schematic of Test Specimen Support
5.1.1 The support space distance shall be estimated for a emerging from the specimen shall be ma
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: D2925 − 01 (Reapproved 2007) D2925 − 14 An American National Standard
Standard Test Method for
Beam Deflection of “Fiberglass” (Glass-Fiber-Reinforced
1
Thermosetting Resin) Pipe Under Full Bore Flow
This standard is issued under the fixed designation D2925; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
ε NOTE—Note 2 was revised editorially in April 2007.
1. Scope*
1.1 This test method covers measurement of the deflection as a function of time of a specimen of fiberglass pipe supported on
a flat non-arced support as a simple beam under full bore flow of water at elevated temperatures. Both glass-fiber-reinforced
thermosetting-resin pipe (RTRP) and glass-fiber-reinforced polymer mortar pipe (RPMP) are fiberglass pipes.
NOTE 1—For the purposes of this standard, polymer does not include natural polymers.
1.2 This test method can be used to determine deflection at varying conditions by substituting other test media.
1.3 Deflections observed using this test method are representative only of piping supported as a simple beam under full bore
flow which has one diameter of pipe overhanging at each support.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information
purposes only.
NOTE 2—There is no known ISO equivalent to this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
C33 Specification for Concrete Aggregates
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plastics
D3567 Practice for Determining Dimensions of “Fiberglass” (Glass-Fiber-Reinforced Thermosetting Resin) Pipe and Fittings
F412 Terminology Relating to Plastic Piping Systems
3. Terminology
3.1 General—Definitions are in accordance with Terminologies D883 and F412 and abbreviations are in accordance with
Terminology D1600, unless otherwise indicated.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 aggregate—a siliceous sand conforming to the requirements of Specification C33, except that the requirements for
gradation shall not apply.
3.2.2 fiberglass pipe—a tubular product containing glass fiber reinforcement embedded in or surrounded by cured thermosetting
resin; the composite structure may contain aggregate, granular or platelet fillers, thixotropic agents, pigments, or dyes;
thermoplastic or thermosetting liners may be included.
1
This test method is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.23 on Reinforced Plastic Piping
Systems and Chemical Equipment.
Current edition approved March 1, 2007Aug. 1, 2014. Published April 2007August 2014. Originally approved in 1970. Last previous edition approved in 20012007 as
ε1
D2925 – 01.D2925 – 01 (2007) . DOI: 10.1520/D2925-01R07E01.10.1520/D2925-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2925 − 14
3.2.3 reinforced thermosetting resin pipe (RTRP)—a fiberglass pipe without aggregate.
3.2.4 reinforced polymer mortar pipe (RPMP)—a fiberglass pipe with aggregate.
4. Significance and Use
4.1 In the absence of deflection measurements from actual installed-above-ground piping, this test method may be used to
evaluate the influence of span length on mid-span deflections at differing temperatures under full bore flow.
NOTE 3—A flat bearing area, small contact area, and narrow bearing width may induce high localized support interaction stresses, and constraints
imposed by the supports may also adversely influence deflections and performance of the pipe.
5. Apparatus
1
5.1 Rigid Support with edges rounded to a 6-mm ( ⁄4-in.) ra
...
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