ASTM F2418-04
(Specification)Standard Specification for Polypropylene (PP) Corrugated Wall Stormwater Collection Chambers
Standard Specification for Polypropylene (PP) Corrugated Wall Stormwater Collection Chambers
SCOPE
1.1 This specification covers requirements, test methods, materials, and marking for polypropylene (PP), open bottom, buried chambers of corrugated wall construction used for collection, detention, and retention of stormwater runoff. Applications include commercial, residential, agricultural, and highway drainage, including installation under parking lots and roadways.
1.2 Chambers are produced in arch shapes with dimensions based on chamber rise, chamber span, and wall stiffness. Chambers are manufactured with integral feet that provide base support. Chambers may include perforations to enhance water flow. Chambers must meet test requirements for arch stiffness, flattening, and accelerated weathering.
1.3 Analysis and experience have shown that the successful performance of this product depends upon the type and depth of bedding and backfill, and care in installation. This specification includes requirements for the manufacturer to provide chamber installation instructions to the purchaser.
1.4 The values stated in inch-pounds are to be regarded as the standard. The SI units in parentheses are given for information only.
1.5 This standard does not purport to address water quality issues or hydraulic performance requirements associated with its use. It is the responsibility of the user to ensure that appropriate engineering analysis is performed to evaluate the water quality issues and hydraulic performance requirements for each installation.
The following safety hazards caveat pertains only to the test method portion, Section , of this specification: 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: F 2418 – 04
Standard Specification for
Polypropylene (PP) Corrugated Wall Stormwater Collection
Chambers
This standard is issued under the fixed designation F 2418; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
1.1 This specification covers requirements, test methods, 2.1 ASTM Standards:
materials, and marking for polypropylene (PP), open bottom, D 256 Test Methods for Determining the Izod Pendulum
buried chambers of corrugated wall construction used for Impact Resistance of Plastics
collection, detention, and retention of stormwater runoff. Ap- D 618 Practice for Conditioning Plastics for Testing
plications include commercial, residential, agricultural, and D 638 Test Method for Tensile Properties of Plastics
highwaydrainage,includinginstallationunderparkinglotsand D 790 TestMethodsforFlexuralPropertiesofUnreinforced
roadways. and Reinforced Plastics and Electrical Insulating Materials
1.2 Chambers are produced in arch shapes with dimensions D 1600 Terminology for Abbreviated Terms Relating to
based on chamber rise, chamber span, and wall stiffness. Plastics
Chambersaremanufacturedwithintegralfeetthatprovidebase D 2122 Test Method for Determining Dimensions of Ther-
support. Chambers may include perforations to enhance water moplastic Pipe and Fittings
flow. Chambers must meet test requirements for arch stiffness, D 2412 Test Method for Determination of External Loading
flattening, and accelerated weathering. Characteristics of Plastic Pipe by Parallel-Plate Loading
1.3 Analysis and experience have shown that the successful D 2990 Test Methods for Tensile, Compressive, and Flex-
performance of this product depends upon the type and depth ural Creep and Creep-Rupture of Plastics
of bedding and backfill, and care in installation. This specifi- D 4101 Specification for Propylene Plastic Injection and
cation includes requirements for the manufacturer to provide Extrusion Materials
chamber installation instructions to the purchaser. D 4329 Practice for Fluorescent UV Exposure of Plastics
1.4 The values stated in inch-pounds are to be regarded as D 6992 Test Method for Accelerated Tensile Creep and
the standard. The SI units in parentheses are given for Creep-Rupture of Geosynthetic Materials Based on Time-
information only. Temperature Superposition Using the Stepped Isothermal
1.5 This standard does not purport to address water quality Method.
issues or hydraulic performance requirements associated with F 412 Terminology Relating to Plastic Piping Systems
its use. It is the responsibility of the user to ensure that 2.2 AASHTO Specification:
appropriate engineering analysis is performed to evaluate the Section 12 Buried Structures and Tunnel Liners, 12.12
water quality issues and hydraulic performance requirements Thermoplastic Pipes
for each installation.
3. Terminology
1.6 The following safety hazards caveat pertains only to the
3.1 Definitions: Definitions used in this specification are in
test method portion, Section 6, of this specification: This
standard does not purport to address all of the safety concerns, accordance with the definitions in Terminology F 412, and
abbreviations are in accordance with Terminology D 1600,
if any, associated with its use. It is the responsibility of the user
of this standard to establish appropriate safety and health unless otherwise indicated.
practices and determine the applicability of regulatory limita-
tions prior to use.
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.
1 3
This specification is under the jurisdiction ofASTM Committee F17 on Plastic AASHTO LRFD Bridge Design Specifications-Dual Units, Third Edition,
Piping and is the direct responsibility of Subcommittee F17.65 on Land Drainage. 2004. Available from American Association of State Highway and Transportation
Current edition approved Oct. 1, 2004. Published October 2004. Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F2418–04
3.1.1 chamber—an arch-shaped structure manufactured of 3.1.14 web—the element of a corrugated wall that connects
thermoplastic with an open-bottom that is supported on feet a crest element to a valley element (see Fig. 2).
and may be joined into rows that begin with, and are termi-
nated by, end caps (see Fig. 1). 4. Materials and Manufacture
3.1.2 corrugated wall—awallprofileconsistingofaregular
4.1 This specification covers chambers made from virgin
pattern of alternating crests and valleys (see Fig. 2).
and rework PP plastic materials as defined by material me-
3.1.3 crest—the element of a corrugation located at the
chanical requirements and chamber performance requirements.
exterior surface of the chamber wall, spanning between two
4.2 Polypropylene materials may be combined with copoly-
web elements (see Fig. 2).
mers, pigments, and impact modifiers which together are
3.1.4 crown—the center section of a chamber typically
suitable for manufacture. Manufactured chamber and end cap
located at the highest point as the chamber is traversed
material shall meet or exceed the requirements of designation
circumferentially.
PP0330B99945, Specification D 4101. The minimum amount
3.1.5 end cap—a bulkhead provided to begin and terminate
of polypropylene plastic in the material shall be 95 % by
a chamber, or row of chambers, and prevent intrusion of
weight. The minimum tensile stress at yield, Test Method D
surrounding embedment materials.
638, shall not be less than 3 100 psi (21 MPa). The minimum
3.1.6 foot—a flat, turned out section that is manufactured
flexural modulus (1 % secant), Test Method D 790, Procedure
with the chamber to provide a bearing surface for transfer of
A, shall not be less than 135 000 psi (931 MPa).The minimum
vertical loads to the bedding (see Fig. 1).
Izod Impact Resistance at 73 ºF (23 ºC), Method A in Test
3.1.7 inspection port—an opening in the chamber wall that
Method D 256, shall not be less than 4 ft-lb/in. (215 J/m).
allows access to the chamber interior.
Materials shall meet the creep requirements in 5.3.5 and 5.3.6
3.1.8 nominal height—adesignationdescribingtheapproxi-
of this standard.
mate vertical dimension of the chamber at its crown (see Fig.
NOTE 1—The polypropylene melt flow rate is specified for chamber
1).
manufacture by injection molding. The melt flow rate may be less than 10
3.1.9 nominal width—a designation describing the approxi-
if the manufactured chamber meets all other requirements in this standard.
mate outside horizontal dimension of the chamber at its feet
This cell class will be re-evaluated when new chamber classifications are
(see Fig. 1). added to Table 1.
NOTE 2—Polypropylene plastic is prepared by the polymerization of
3.1.10 period—the length of a single repetition of the
propylene or propylene with other alpha olefins as described in Specifi-
repeated corrugation, defined as the distance from the center-
cation D 4101.
line of a valley element to the centerline of the next valley
4.3 Rework Material—Clean rework material generated
element (see Fig. 2).
from the manufacturer’s own chambers may be used by the
3.1.11 rise—the vertical distance from the chamber base
same manufacturer, using the same type and grade resin,
(bottom of the chamber foot) to the inside of a chamber wall
provided that the chambers produced meet all the requirements
valley element at the crown as depicted in Fig. 1.
of this specification.
3.1.12 span—the horizontal distance from the interior of
one sidewall valley element to the interior of the other sidewall
5. Requirements
valley element as depicted in Fig. 1.
3.1.13 valley—the element of a corrugated wall located at
5.1 Chamber Description
the interior surface of the chamber wall, spanning between two
5.1.1 Chambers shall be produced in arch shapes symmetric
webs (see Fig. 2).
about the crown with corrugated wall and integral feet for base
support (see Fig. 1).Any arch shape is acceptable provided all
the requirements of this specification are met.
NOTE 3—For purposes of structural optimization, the wall geometry
(e.g. corrugation height, crest width, valley width, and web pitch) may
vary around the chamber circumference.
5.1.2 Chambers shall be produced with maximum span at
the base of the chamber (bottom of the chamber foot).
5.1.3 Chambers may include access ports for inspection or
cleanout. Chambers with access ports shall meet the require-
ments of this standard with access ports open and closed.
5.1.4 Chambersmayincludeperforations.Perforationsshall
be cleanly fabricated in a size, shape, and pattern determined
by the manufacturer. Chambers with perforations shall meet
the requirements of this standard.
5.1.5 Chamber sections shall be manufactured to connect at
the ends to provide rows of various lengths. Joints shall be
NOTE—The model chamber shown in this standard is intended only as
configured to prevent intrusion of the surrounding embedment
a general illustration. Any chamber configuration is permitted, as long as
materialandshallbecapableofcarryingthefullloadforwhich
it meets all the specified requirements of this standard.
FIG. 1 Model Chamber the chamber is designed.
F2418–04
NOTE—The corrugation profile shown in this standard is intended only as a general illustration.Any corrugation pattern is permitted, as long as it meets
all the specified test requirements of this standard.
FIG. 2 Model Corrugated Wall
TABLE 1 Classifications, Dimensions, and Tolerances
Chamber Nominal Nominal Minimum Minimum Minimum
Classification Height Width Foot Width Wall Arch
Rise Span
Thickness Stiffness
A
Constant
Average Tolerance 6 Average Tolerance 6
in. (mm) in. (mm) in. (mm) in (mm) in. (mm) in (mm) in. (mm) in. (mm) lb/ft/%
16333 16 (406) 33 (838) 13.1 (333) 0.4 (10) 24.3 (617) 0.4 (10) 4.0 (100) 0.125 (3.18) 300
30351 30 (762) 51 (1295) 26.7 (678) 0.4 (10) 42.6 (1082) 0.4 (10) 4.0 (100) 0.175 (4.45) 300
A
The values for arch stiffness should not be considered comparable to values of pipe stiffness.
all other requirements of this standard.
5.1.6 Each row of chambers shall begin and terminate with
an end cap.
5.3.5 Creep Rupture Strength—Specimens fabricated in the
5.1.7 Chamber classifications, dimensions, and tolerances
same manner and composed of the same materials as the
are provided in Table 1. Chamber classifications are based on
finished chambers shall have a 50 year creep rupture tensile
the nominal height and nominal width of the chambers, as
strength at 73 ºF (23 ºC) not less than 1 000 psi (7 MPa), when
illustrated in Fig. 1. Classifications shall be manufactured with
determined in accordance with 6.2.6.
the specified rise and span with tolerances, minimum foot
5.3.6 Creep Modulus—Specimens fabricated in the same
width, and minimum wall thickness.
manner and composed of the same materials as the finished
5.2 Workmanship—The chambers shall be homogeneous
chambers shall have a 50 year tensile creep modulus at 73 ºF
throughout and essentially uniform in color, opacity, density,
(23 ºC) at a stress level of 1 000 psi (7 MPa) not less than 31
and other properties. The interior and exterior surfaces shall be
000 psi (214 MPa). The creep modulus shall be determined in
free of chalking, sticky, or tacky material. The chamber walls
accordance with 6.2.7.
shall be free of cracks, blisters, voids, foreign inclusions, or
other defects that are visible to the naked eye and may affect NOTE 5—The50yearcreeprupturestrengthand50yearcreepmodulus
values, determined by the test methods in 6.2.6 and 6.2.7, are used to
the wall integrity.
define the slope of the logarithmic regression curves to describe the
5.3 Physical and Mechanical Properties of Finished Cham-
required material properties sampled from the product. They are not to be
ber:
interpreted as service life limits.
5.3.1 Minimum Wall Thickness—Chambers shall have a
wallthicknessnotlessthantheminimumwallthicknessshown 5.3.7 Arch Stiffness Constant—Chambers shall have an arch
in Table 1 when measured in accordance with 6.2.1. stiffness constant (ASC) not less than the minimum arch
5.3.2 Minimum Foot Width—Chambers shall have a foot stiffness constant shown in Table 1 when determined in
width not less than the minimum foot width as shown in Table accordance with 6.2.8.
1 when measured in accordance with 6.2.2 (see also Fig. 1).
5.3.8 Flattening—Chambers shall show neither splitting,
5.3.3 Rise and Span Dimensions—Chambers shall meet the
cracking, or breaking under normal light and the unaided eye
rise and span dimension requirements shown in Table 1 when
nor loss of load carrying capacity when tested in accordance
measured in accordance with 6.2.3 and 6.2.4 (see also Fig. 1).
with 6.2.9.
5.3.4 Deviation From Straightness—The chamber and its
5.4 Accelerated Weathering—Specimens fabricated in the
supportfeetshallnothaveadeviationfromstraightnessgreater
same manner and composed of the same materials as the
than L/100, where L is the length of an individual chamber,
finished chambers shall meet all material requirements in 4.2
when measured in accordance with 6.2.5.
after accelerated weathering described in 6.3.
5.5 Installation Requirements—The chamber manufacturer
NOTE 4—This check is to be made at the time of manufacture and is
included to prevent pre-installation deformations in a chamber that meets shall provide the purchaser with the requirements for the
F2418–04
proper installation of chambers and the minimum and maxi- surface of the valley across the chamber interior to the
mum allowable cover height for specific traffic and non-traffic opposing inside valley surface at the chamber foot (see Fig. 1)
loading conditions. The installation requirements shall be at three locations, one at each end of the chamber and one at
based on a design that satisfies the safety factors specified in mid-length. Report the average of the three measurements.
the AASHTO LRFD Bridge Design Specifications, Section
6.2.5 Deviation From Straightness—Deviation from
12.12 for Thermoplastic Pipe for earth and live loads, with
straightness measurements shall be performed on the chamber,
consideration for impact and multiple vehicle presences.
placed on a flat, l
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