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Transmissivity: An ambiguous contradiction

February 1st, 2008 / By: / Drainage Materials, Feature, Specifications, Testing & Codes

By Richard Lacey, TRI Environmental Introduction Specifying the transmissivity of a drainage product seems straightforward. There are only two approaches defined in the governing test method. One is to specify the required transmissivity, while the other is to specify the required in-plane flow rate. Of course, the specification must also include all of the parameters […]


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