Proper Drill Operation

Following the proper sequence of pre- and post-drilling steps helps to prevent dry-firing and damage to the bit’s trunnion bolt (shown here at bottom, left).

In order to perform work on center highway lanes, crews complete much of the project at night when traffic could be reduced to one lane.

Road crew worker operates an E-Z Drill Model 210-2 SRA, a slab rider unit that rests on the existing concrete while drilling two dowel holes at a time.

When operating multi-gang units, adjust feed pressure on each individual drill first, then further adjust if needed when running simultaneously for the first time.

Close X