ASTM-F2787 2009

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F2787-09 Standard Practice for Structural Design of Thermoplastic Corrugated Wall Stormwater Collection Chambers

Published By	Publication Date	Number of Pages
ASTM	2009	26

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Categories: 83.140.99 - Other rubber and plastics products, ASTM

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Description

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.

1.6 Polypropylene chamber classifications are found in Specification F 2418 . Specification F 2418 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.

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PDF Pages	PDF Title
1	Scope Referenced Documents
2	Terminology Significance and Use FIG. 1
3	Basis of Design Analysis for Design FIG. 2 FIG. 3
4	Structural Loads Structural Design
5	FIG. 4
6	Design Qualification Certification
7	Keywords A1. COMPUTATION OF LIVE LOADS A1.1 Live Load Computation TABLE 1 TABLE 2
8	A1.2 Service Limit State A1.3 Safety Against Structural Failure FIG. A1.1
9	FIG. A1.2
10	FIG. A1.3
11	X1. EXAMPLE DESIGN USING 2-D FINITE ELEMENT ANALYSIS X1.1 Given Information X1.2 Finite Element Analysis X1.3 Strength Analysis TABLE X1.1
12	TABLE X1.2 FIG. X1.1
13	X1.4 Global Buckling Analysis TABLE X1.3
14	TABLE X1.4 FIG. X1.2
15	TABLE X1.5
16	FIG. X1.3
17	FIG. X1.4 TABLE X1.6 TABLE X1.7
18	TABLE X1.8 TABLE X1.9 TABLE X1.10 TABLE X1.11
19	TABLE X1.12 TABLE X1.13 TABLE X1.14 TABLE X1.15
20	X2. EXAMPLE CALCULATION OF BEARING ON BEDDING AND SUBGRADE X2.1 Given Information X2.2 Bearing Calculation and Results X2.3 Example Calculation of Bearing Load on Foundation under Chamber Foot and at the Foundation Subgrade Level FIG. X2.1
21	TABLE X2.1 TABLE X2.2 TABLE X2.3
22	FIG. X2.2
23	FIG. X2.3
24	FIG. X2.4
25	X3. DESIGN QUALIFICATION TESTING X3.1 X3.2 X3.3 X3.4 X3.5 FIG. X2.5

Additional information

Standard Title	F2787-09 Standard Practice for Structural Design of Thermoplastic Corrugated Wall Stormwater Collection Chambers
Published Code	ASTM
Publication Date	2009
Pages Count	26
ICS Codes	83.140.99 - Other rubber and plastics products

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ASTM-F2787 2009

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