Trench Rescue Guideline Flashcards
Definition of Trench
An excavation of earth that is deeper than its width but less than 15ft wide
Trench Collapse Types
What are the 4 types of trench collapses
- Belly in or Wall Slough
- Lip Slide
- Side Wall Shear
- Toe Slough
Trench Collapse
What is a Lip Slide
- Most common type of collapse usually caused by the spoil pile too close to the edge.
Trench Collapse
What is a Side Wall Shear
- An entire wall of a trench that shears away from the side
Trench Collapse
What is a Toe Slough
- The bottom wall of the trench kicks into the floor of the trench.
Trench Collapse
What is the most common collapse
- Lip Slide Collapse
Trench Collapse
What is a Belly in or Wall Slough
- large masses of soil falling from the sides of a trench and leaving a large overhang.
Trench Rescue
Surcharge Definition
Any type of excess weight that may be added to the trench lip. Including rescuers
Trench Rescue
Response - 12 units overall
Additional Trapped - 3 units
2 - BCs
3 - Engines
1 - Tower
1 - ladder - Stokes basket capable
2 - Technical Rescue
1 - Hazmat
1 - MCHD Supervisor
1 - MCDH Medic
if 2 or more are trapped, the following will be added
1 - Technical Rescue
1 - Engine
1 - BC
Trench Rescue Guideline
When the IC re-routes or stops traffic how is it accomplished
Within 300’ in all directions
Trench Rescue
How far back should you move the spoil pile away from the edge of the trench lip
2-4ft
Trench Rescue
How should all digging be completed
By hand. power equipment must be authorized by the Technical Rescue Extrication Officer
Trench Rescue
What is the weight of soil?
100-125lbs per cubic foot
Trench Rescue
How long should documents, records and forms be kept on file? Who stores it?
5 years
Assistant Fire Chiefs Office
Trench Rescue Guideline
At what depth should should rescuers and EMS use extreme caution anytime they enter a trench not associated with a Trench Rescue style call? Ex - Medical, Trauma etc
4ft
