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Bill Corbett

Slip Testing

Understanding Slip Coefficient and Tension Creep Testing of Coatings Used in Slip-Critical Bolted Connections

Bridges, buildings, and other structures commonly include designed bolted connections of steel beams, girders, and other structural members using connection/splice plates of various sizes and configurations. High-strength bolts are used to secure the connections. The holes in the steel members and the connection/splice plates are larger (typically 1/16–1/8 of an inch larger) than the bolt …

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Coating Instrument Calibration

Ask A Consultant Q & A: Calibration and Verification of Coating Inspection Gages

Calibration and Verification of Coating Inspection Gages Question: Could you please provide a clear explanation of the calibration and verification of coating inspection gages in the coating business? I would also appreciate  if you could give an example using a coating inspection gage. Answer: ASTM D7091 provides very good definitions of Calibration and Verification of Accuracy …

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Measuring Dry Film Coating Thickness According to SSPC-PA 2

THIS ARTICLE HAS BEEN UPDATED WITH THE REVISED STANDARDS FOR 2015: [button url=”https://ktauniversity.com/measuring-coating-thickness-sspc-pa-2/” size=”large” style=”blue”] Click Here to Read the Updated Article [/button] Coating thickness shall be measured in accordance with SSPC: The Society for Protective Coatings Paint Application Standard No. 2 (SSPC-PA 2) is a simple enough statement, yet this common specification requirement is …

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Can In-Process Quality Control Prevent Premature Coating Failures?

For decades we have heard that the incidence of premature coating failure would decline by explicitly requiring the contractor to control the quality of workmanship (via contract document language) using properly trained (and equipped) quality control personnel. In this Case from the F-Files, we’ll take a brief look at five case history failures and assess …

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