ASTM F2787-11
(Practice)Standard Practice for Structural Design of Thermoplastic Corrugated Wall Stormwater Collection Chambers
Standard Practice for Structural Design of Thermoplastic Corrugated Wall Stormwater Collection Chambers
SIGNIFICANCE AND USE
This practice provides a rational method for structural design of thermoplastic stormwater chambers. The loads, capacities, and limit states are based on accepted load and resistance factor design for thermoplastic pipes; however, existing design specifications for thermoplastic pipes do not adequately address the design of chambers due to (1) open-bottom geometry, (2) support on integral foot, (3) varying circumferential corrugation geometry, and (4) manufacture with alternative thermoplastic resin. This practice standardizes recommendations for designers to adequately address these aspects of chamber design.
This practice is written to allow chamber manufacturers to evaluate chambers meeting existing classifications and to design chambers for new classifications as they are developed.
SCOPE
1.1 This practice standardizes structural design of thermoplastic corrugated wall arch-shaped chambers used for collection, detention, and retention of stormwater runoff. The practice is for chambers installed in a trench or bed and subjected to earth and live loads. Structural design includes the composite system made up of the chamber arch, the chamber foot, and the soil envelope. Relevant recognized practices include design of thermoplastic culvert pipes and design of foundations.
1.2 This practice standardizes methods for manufacturers of buried thermoplastic structures to design for the time dependent behavior of plastics using soil support as an integral part of the structural system. This practice is not applicable to thermoplastic structures that do not include soil support as a component of the structural system.
1.3 This practice is limited to structural design and does not provide guidance on hydraulic, hydrologic, or environmental design considerations that may need to be addressed for functional use of stormwater collection chambers.
1.4 Stormwater chambers are most commonly embedded in open graded, angular aggregate which provide both structural support and open porosity for water storage. Should soils other than open graded, angular aggregate be specified for embedment, other installation and functional concerns may need to be addressed that are outside the scope of this practice.
1.5 Chambers are produced in arch shapes to meet classifications that specify chamber rise, chamber span, minimum foot width, minimum wall thickness, and minimum arch stiffness constant. Chambers are manufactured with integral footings.
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Designation: F2787 − 11 AnAmerican National Standard
Standard Practice for
Structural Design of Thermoplastic Corrugated Wall
1
Stormwater Collection Chambers
This standard is issued under the fixed designation F2787; 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. Scope* 1.7 Thispracticeisapplicabletodesignininch-poundunits.
The SI units in parenthesis are given for information only.
1.1 This practice standardizes structural design of thermo-
1.8 This standard does not purport to address all of the
plastic corrugated wall arch-shaped chambers used for
safety concerns, if any, associated with its use. It is the
collection, detention, and retention of stormwater runoff. The
responsibility of the user of this standard to establish appro-
practice is for chambers installed in a trench or bed and
priate safety and health practices and determine the applica-
subjected to earth and live loads. Structural design includes the
bility of regulatory limitations prior to use.
composite system made up of the chamber arch, the chamber
foot, and the soil envelope. Relevant recognized practices
2. Referenced Documents
include design of thermoplastic culvert pipes and design of
2
2.1 ASTM Standards:
foundations.
D2487 Practice for Classification of Soils for Engineering
1.2 This practice standardizes methods for manufacturers of
Purposes (Unified Soil Classification System)
buried thermoplastic structures to design for the time depen-
D2990 Test Methods for Tensile, Compressive, and Flexural
dent behavior of plastics using soil support as an integral part
Creep and Creep-Rupture of Plastics
of the structural system. This practice is not applicable to
D6992 Test Method for Accelerated Tensile Creep and
thermoplastic structures that do not include soil support as a
Creep-Rupture of Geosynthetic Materials Based on Time-
component of the structural system.
Temperature Superposition Using the Stepped Isothermal
1.3 This practice is limited to structural design and does not Method
F2418 SpecificationforPolypropylene(PP)CorrugatedWall
provide guidance on hydraulic, hydrologic, or environmental
design considerations that may need to be addressed for Stormwater Collection Chambers
3
2.2 AASHTO LRFD Bridge Design Specifications:
functional use of stormwater collection chambers.
Section3LoadsandLoadFactors, 3.5PermanentLoads;3.6
1.4 Stormwater chambers are most commonly embedded in
Live Loads
open graded, angular aggregate which provide both structural
Section 10 Foundations, 10.6 Spread Footings
support and open porosity for water storage. Should soils other
Section 12 Buried Structures and Tunnel Liners, 12.12
than open graded, angular aggregate be specified for
Thermoplastic Pipes
embedment, other installation and functional concerns may
3
2.3 AASHTO Standard Specifications:
need to be addressed that are outside the scope of this practice.
M43 Standard Specification for Size ofAggregate for Road
1.5 Chambers are produced in arch shapes to meet classifi-
and Bridge Construction
cationsthatspecifychamberrise,chamberspan,minimumfoot
M 145 Standard Specification for Classification of Soils and
width, minimum wall thickness, and minimum arch stiffness
Soil-Aggregate Mixtures for Highway Construction Pur-
constant. Chambers are manufactured with integral footings.
poses
T99 Standard Method of Test for Moisture-Density Rela-
1.6 Polypropylene chamber classifications are found in
tions of Soils Using a 2.5-kg (5.5-lb) Rammer and a
Specification F2418. Specification F2418 also specifies cham-
ber manufacture and qualification.
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
1
This practice is under the jurisdiction of ASTM Committee F17 on Plastic the ASTM website.
3
Piping Systems and is the direct responsibility of Subcommittee F17.65 on Land AASHTO LRFD Bridge Design Specifications-Dual Units, 4th Edition, 2007
Drainage. and AASHTO Standard Specifications for Transportation Materials and Sampling,
Current edition approved April 1, 2011. Published April 2011. Originally 28th edition, 2008. Available from American Association of State Highway and
approved in 2009. Last previous edition approved in 2009 as F2787–09. DOI: Transportation Officials (AASHTO), 444 N. Capitol St., NW, Suite 249,
10.1520/F2787-09. Washington, DC 20001.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Cons
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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.
An American National Standard
Designation:F2787–09 Designation: F2787 – 11
Standard Practice for
Structural Design of Thermoplastic Corrugated Wall
1
Stormwater Collection Chambers
This standard is issued under the fixed designation F2787; 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. Scope*
1.1 This practice standardizes structural design of thermoplastic corrugated wall arch-shaped chambers used for collection,
detention, and retention of stormwater runoff. The practice is for chambers installed in a trench or bed and subjected to earth and
live loads. Structural design includes the composite system made up of the chamber arch, the chamber foot, and the soil envelope.
Relevant recognized practices include design of thermoplastic culvert pipes and design of foundations.
1.2 This practice standardizes methods for manufacturers of buried thermoplastic structures to design for the time dependent
behavior of plastics using soil support as an integral part of the structural system. This practice is not applicable to thermoplastic
structures that do not include soil support as a component of the structural system.
1.3 Thispracticeislimitedtostructuraldesignanddoesnotprovideguidanceonhydraulic,hydrologic,orenvironmentaldesign
considerations that may need to be addressed for functional use of stormwater collection chambers.
1.4 Stormwater chambers are most commonly embedded in open graded, angular aggregate which provide both structural
support and open porosity for water storage. Should soils other than open graded, angular aggregate be specified for embedment,
other installation and functional concerns may need to be addressed that are outside the scope of this practice.
1.5 Chambersareproducedinarchshapestomeetclassificationsthatspecifychamberrise,chamberspan,minimumfootwidth,
minimum wall thickness, and minimum arch stiffness constant. Chambers are manufactured with integral footings.
1.6 Polypropylene chamber classifications are found in Specification F2418. Specification F2418 also specifies chamber
manufacture and qualification.
1.7 This practice is applicable to design in inch-pound units. The SI units in parenthesis are given for information only.
1.8 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:
D2487 Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)
D2990 Test Methods for Tensile, Compressive, and Flexural Creep and Creep-Rupture of Plastics
D6992 Test Method for Accelerated Tensile Creep and Creep-Rupture of Geosynthetic Materials Based on Time-Temperature
Superposition Using the Stepped Isothermal Method
F2418 Specification for Polypropylene (PP) Corrugated Wall Stormwater Collection Chambers
3
2.2 AASHTO LRFD Bridge Design Specifications:
Section 3 Loads and Load Factors, 3.5 Permanent Loads; 3.6 Live Loads
Section 10 Foundations, 10.6 Spread Footings
Section 12 Buried Structures and Tunnel Liners, 12.12 Thermoplastic Pipes
3
2.3 AASHTO Standard Specifications:
M 43 Standard Specification for Size of Aggregate for Road and Bridge Construction
M 145 Standard Specification for Classification of Soils and Soil-Aggregate Mixtures for Highway Construction Purposes
1
This practice is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.65 on Land Drainage.
Current edition approved Aug. 1, 2009. Published September 2009. DOI: 10.1520/F2787-09.
Current edition approvedApril 1, 2011. PublishedApril 2011. Originally approved in 2009. Last previous edition approved in 2009 as F2787–09. DOI: 10.1520/F2787-09.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
3
AASHTO LRFD Bridge Design Specifications-Dual Units, 4th Edition, 2007 and AASHTO Standard Specifications for Transportation Materials and Sampling, 28th
edition, 2008.Available fromAmericanAssociation of
...
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