Non-destructive apparatus, system and method for determining pull-out capacity of friction nails
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United States of America Patent
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Nov 17, 2020
Grant Date -
Apr 13, 2017
app pub date -
Oct 9, 2015
filing date -
Oct 9, 2015
priority date (Note) -
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Abstract
Embodiments include an apparatus for determining a pull-out capacity of a nail disposed in concrete. The apparatus includes control processing circuitry and a Schmidt hammer electrically connected to the control processing circuitry. The Schmidt hammer is configured to strike the nail during a test event and to record a rebound value for the nail. The control processing circuitry is configured to calculate an estimated pull-out strength for the nail using the rebound value of the nail that resulted from the test event, a predetermined nail length, a predetermined nail penetration depth in the concrete, and an estimated predetermined strength of concrete. The apparatus also includes a remote computer configured to communicate with the control processing circuitry and to store an estimated pull-out strength of the nail. The control processing circuitry includes a memory and a database.
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