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    Masonry Wall Drainage Test — A Proposed Method for Field Evaluation of Masonry Cavity Walls for Resistance to Water Leakage

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    A procedure for the field testing of wall drainage systems is proposed. The procedure combines a new test method called the “Wall Drainage Test” with field adapted versions of ASTM E514 to evaluate new and existing masonry drainage cavities and flashing systems. The wall drainage test introduces water directly into masonry cavities at rates based upon values of water penetration measured in field versions of ASTM E514. To assure that water is introduced uniformly along the back face of the outer wythe during such testing, realistic limits are recommended for several parameters including the velocity and volume of water at points of entry into the cavity as well as limits on the minimum number and maximum spacing of the entry points. Procedures for using the test method as a quality control check for new masonry walls and as an investigative tool to evaluate existing masonry wall leakage problems are discussed.


    Water penetration, masonry, wall drainage test, masonry cavity, field testing, interior leakage, flashing

    Author Information:

    Krogstad, NV
    Senior Architect/EngineerConsulting and Research Engineers, Wiss, Janney, Elstner Associates, Inc., Northbrook, Illinois

    Committee/Subcommittee: C15.03

    DOI: 10.1520/STP25004S