Standard DTI FAQs
- Accuracy of torque wrench
- Bolt Tension and Shear Combined
- Bolt Tension Requirement
- Bolt Threads Damaged
- Bolt Torque Control
- Bolt Torque Requirements
- Breaking bolts during installation
- Broken Bolts and Long Impacting
- Bumps Directly Against the Nut
- Cannot Squash the Bumps
- Coatings For DTIs
- Compatible Specifications
- Compressing DTIs
- Condition of the bolt threads
- Corrosion Potential
- Corrosion protection
- Dimensional compatability
- DTIs installed incorrectly
- Feeler gage insertions or refusals
- Feeler gauge - what thickness
- FHWA DTI Installation Verification Procedure
- FHWA Requirements - Multiple DTI Lots
- Flattening DTIs
- Galvanizing A490 DTIs
- Hot Dip Galvanizing
- Impacting takes too long
- Inspection criteria
- Inspection frequency using a feeler gage
- Inspection procedure
- Installation Verification Procedure
- Job Inspection Gap
- Jobsite Bolt Storage
- Length of Bolt with DTIs
- Lubrication
- Maximum Bolt Tension
- Minimum bolt preload
- New Research Council Provisions
- Occasional bolt failures
- One Side, One Man
- Overheating of nuts during prolonged impacting
- Oversized Holes and Squirters
- Overtensioned or Overtightened bolts
- Pattern Tightening and DTIs
- Plain Finish DTIs with Galvanized Bolts
- Polishing or grinding of the DTI bumps
- Pre-Installation Verification Test
- Recommended Wrench Capacity & Make
- Required bolt tension
- Research Council on Structural Connections
- Resistance to turning is too high
- Rolling bolts
- Rotational capacity test on bolts
- Snug Tight
- Special DTIs for non ASTM bolts
- Stripping of threads
- Stripping or Bolt Failure
- Surface Coatings on Faying Surfaces
- Tension in Bolts
- Thread Condition shows some necking down
- Tightening time too long
- Tool capacity
- Torque Wrench Inspection
- Turn-of-nut and DTIs
- Turning Bolt Head Against DTI Bumps
- Twist-Off (TC) Bolts
- Uneven compression of the DTI
- Usable gap at minimum preload
- Weathering Steel
- Wrench capacity