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// CODE SNIPPET

1905.3.3 Test Records and Trial Mixtures

NYC Building Code 2014 > 19 Concrete > 1905 Concrete Quality, Mixing and Placing > 1905.3 Proportioning on the Basis of Field Experience and/or Trial Mixtures > 1905.3.3 Test Records and Trial Mixtures

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Field strength test records or trial mixtures used to determine f'_cr shall not be more than 24 months old measured from the date of batching, provided the materials are the same as those proposed for use and the concrete producer provides a written statement confirming the materials are the same as those proposed for use.

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