Are Squirter® DTIs allowed by the Research Council on Structural Connections (RCSC), AISC, FHWA, AASHTO, ICBO?
Also See: Use of DTI Washer in Accordance with ICC Specifications Yes, since Squirter® DTIs are made to ASTM F959, the specification for generic DTI’s, with the silicone added for the convenience of the bolt installers and inspectors, they are suitable on any project governed by these specification bodies. All Applied Bolting Direct Tension Indicators (DTI’s) are manufactured and certified to ASTM F959, and therefore they comply to the Special Inspection provisions of ICBO and the provisions of the Research Council on Structural Connections June 2000 “Specification for Structural Joints Using ASTM A325 and A490 Bolts”. “Squirter® DTIs” are identical to regular non-squirting DTI’s in all the provisions of ASTM F959, with the “squirt” feature added for the convenience of the installers and inspectors. When DTI’s are used on the bolts, inspection by means of a torque wrench is unnecessary. The Research Council on Structural Connections “Specification for Structural Joints using ASTM A325
