In light of COVID-19 (coronavirus) and our priority for the health and welfare of our members and staff, ASTM International has decided that it is inadvisable and impractical to hold the committee meetings in Prague on April 27-May 1. The decision was based on several factors, including, but not limited to:

    • Continued review of information and recommendations from the U.S. Centers for Disease Control and Prevention (CDC), the World Health Organization (WHO) and other governmental bodies.
    • Input from our members whose organizations are increasingly concerned with travel and the large gathering in Prague.
    • Watching the expanding trajectory of the coronavirus.

    Staff managers will be contacting committee leaders to plan alternatives for conducting committee business. For any committees that collected money for events, ASTM will work to issue refunds as necessary. Attendees are responsible for cancelling their own hotel reservations.

    Looking forward, we will rely on these and other relevant criteria and input points to assess the status of future scheduled ASTM meetings and events. Please consult our meeting webpage for the most up-to-date information. Thank you for your understanding and continued commitment to ASTM International.

    C18 Dimension Stone

    Title: POSTPONED Symposium on Dimension Stone Use in the Built Environment

    Dates: Wednesday April 01 2020 - Thursday April 02 2020

    Location: (To Be Announced)

    Event Name: CANCELED April 2020 Committee Week

    About The Event

    Technical Program

    Registration Information

    Technical Chair Contact Information

    Future Meeting Dates

    About the Event

    PLEASE NOTE: This event has been POSTPONED and new dates have not yet been determined. More information will be posted as it becomes available.

    Dimension stone cladding and paving systems continue to evolve and present challenges to design professionals, owners, and installation, repair, and restoration contractors. This symposium is intended to bring together the diverse interests of professionals in the dimension stone community involved with the design, construction, evaluation, and use of dimension stone for a formal exchange of information on the behavior of dimension stone in the built environment.

    Topics will include, but are not limited to:

    • Physical and/or mechanical properties
    • Design
    • Evaluation and investigation
    • Durability
    • Maintenance
    • Restoration

    The language of the symposium will be English.

    Technical Program

    To view the technical program (presentation times, paper titles, and presenters’ names), click Technical Program.

    Registration Information

    Due to the postponement of this event ASTM is currently in the process of issuing refunds for the registration fees. Please contact Symposia Operations at or +1 610-832-9698 if you do not receive your refund within 4 weeks.

    Technical Chair Contact Information

    Additional information about the symposium is available via email from Symposium Chairman Steven Naggatz at or Symposium Co-Chair Charles Muehlbauer at

    Future Meeting Dates

    Committee C18 invites you to attend their future standards development meetings. There is no fee to attend these meetings, and membership in ASTM International is not required. For more information about future C18 meetings, please visit C18 Future Meetings.

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