ASTM WK47898

    New Practice for Design of Modular Stormwater Collection Chambers

    (What is a Work Item?)

    Developed by Subcommittee: F17.65 | Committee F17 | Contact Staff Manager


    1. Scope

    1.1 This practice standardizes structural design of thermoplastic modular tanks used for collection, detention, and retention of stormwater runoff. This practice is for tanks installed in a trench or bed and subjected to earth and live loads. 1.2 This practice standardizes methods for manufacturers of buried thermoplastic structures to design for the time-dependent behavior of plastics when these structures are arranged in a uniform pattern and in direct contact or very close proximity with each other. This practice is not applicable to chambers installed in an individual capacity. 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 tanks. Furthermore, this practice does not address the means and methods for construction or installation of the tanks or both. 1.4 Units--The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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.


    chamber; storm water; structural design; modular


    The only relevant document relating to the design and testing of modular stormwater collection chambers (as I am aware) is the Construction Industry Research and Information Association (CIRIA) C680 guidance document developed in Britain. ASTM standards have been developed with a similar scope for arch-shaped collection chambers (F2787, F2922, and F2418), though no equivalent standard yet exists for modular (box-type) systems. This is despite the fact that these types of systems are becoming increasing popular, and several failures associated with these systems have occurred in practice.

    The title and scope are in draft form and are under development within this ASTM Committee.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Brendan Casey

    Draft Under Development