Squirters

Squirters are regular DTI's (Direct Tension Indicators) with a flexible silicone embedded in the depressions under the bumps. To use them, simply

TIGHTEN THE BOLT UNTIL AFTER THE ORANGE SILICONE APPEARS IN VOLUME FROM MOST OF THE DTI'S SQUIRT LOCATIONS. THEN STOP TIGHTENING.

That's all there is to it. You can see when you're done.

Squirters Field Tested by Florida DOT

On the Beaver Street Project in Jacksonville, the Florida DOT gave Squirters a try.  They were very successful.

The test results showed that it was a accurate method of proving the proper tension in the bolt, while at the same time showed a significant time and money savings!

Check out the trial results for yourself in pdf format, as written by Keith and Schnars for the Florida DOT. Go to the trial results here.

To find out more about Squirters or any other type of bolting check out applied bolting.com

The guys at applied bolting are great.  They have a site with a lot of good information. It is just not a product page, it has a ton of useful information on different bolting techniques, what to do if there are problems, a FAQ section and more.   They are the BridgePros Bolting Headquarters.

If you can't find the information you need (does not matter if you are a contractor or inspector) they will help. Chris Curven ccurven@sover.net is a great contact at the company and is more than willing to help you out!