Fire Engineering Training Community

Where firefighters come to talk training

Extrication "Quick Tip" #26 (THE DEEP CUT)

(Yellow symbolizes the backside of the A post, Red is showing the sever from the additional (deep) cut)

One of the most common complaints I hear about completing dash displacements is the lack of actual "lift" or the feeling of resistance during the lift. This can be caused by a handful of issues but in my opinion the most common is the lack of a good "deep" cut on the backside of the A post. Picture 1 shows in yellow the reinforced area that is commonly not severed during the initial cuts. The red line represents the additional deep cut.  Let me explain... A dash lift for my department (plan A) is composed of two lower horizontal relief cuts followed by pinching the cut metal (via spreaders) and making an opening (window) for the spreaders. The A post is then cut to facilitate the lift and the spreaders are then placed in the open window and the lift is completed. However, with the increased strength of modern vehicles, the widening of vehicle A posts, and the increased strength/steel in A post sections, we have added an additional cut to our plan A dash lift.

(final deep cut completing severing the backside of the A post)

Once the two horizontal cuts are made and the window is rotated out, one additional (DEEP) cut will sever the back half of the A post allowing you to sever the backside and in turn getting a complete dash displacement as shown below.  ISAAC FRAZIER is a Special Operations Lieutenant with St. Johns County Florida’s Heavy Rescue “Squad 4”. First due to the deadliest stretch of roadway in the nation, Frazier teaches from personal street experience providing tried and true tactics. Frazier is the owner of Tactical Advantage Training and creator of the course Tactical Extrication. Frazier travels nationally sharing his passion teaching fire and extrication courses. Frazier is a Fire Officer II, FL Paramedic, Special Operations Officer, Florida State Instructor, FLUSAR Tech, Diver, and FL Hazmat Tech.

Views: 3651


You need to be a member of Fire Engineering Training Community to add comments!

Join Fire Engineering Training Community

Policy Page


The login above DOES NOT provide access to Fire Engineering magazine archives. Please go here for our archives.


Our contributors' posts are not vetted by the Fire Engineering technical board, and reflect the views and opinions of the individual authors. Anyone is welcome to participate.

For vetted content, please go to

We are excited to have you participate in our discussions and interactive forums. Before you begin posting, please take a moment to read our community policy page.  

Be Alert for Spam
We actively monitor the community for spam, however some does slip through. Please use common sense and caution when clicking links. If you suspect you've been hit by spam, e-mail

FE Podcasts

Check out the most recent episode and schedule of

© 2024   Created by fireeng.   Powered by

Badges  |  Report an Issue  |  Terms of Service