Ch 17 - Tech Rescue & Vehicle Extrication

Question 1

Pancake collapse

Answer 1

Exterior walls collapse simultaneously causing roofs and floors to collapse on top of each other.
Least likely to contain voids

Question 2

V-shaped collapse

Answer 2

Outer walls remain intact and floor/roof fails in the middle

Question 3

Lean-to collapse

Answer 3

One outer wall collapses, side of the floor/roof connected to failed wall collapses, creating a triangular void. Likely victim survival

Question 4

A-frame collapse

Answer 4

Floor/roof collapses on both sides of load bearing wall, creating a pair of lean-to collapses on either side of load bearing wall. Good chance of victim survival in void spaces

Question 5

Cantilever collapse

Answer 5

One or more walls collapse, leaving floors attached to and supported by remaining walls. Good chance of survivable voids but high risk of secondary collapse

Question 6

Physical hazards in collapse

Answer 6

-debris that is sharp/jagged
-exposed wiring and rebar
-broken glass
-unprotected openings
-secondary collapse

Question 7

Environmental hazards of collapse

Answer 7

-fire
-noise
-darkness
-damaged/leaking utilities
-atmospheric conditions

Question 8

PFD distance from water

Answer 8

10ft

Question 9

Cable elevators

Answer 9

Any size building
Counterweights
Equipment room, sometimes at top

Question 10

Hydraulic elevators

Answer 10

Limited to six stories
Mechanical room on lower level nearby shaft

Question 11

Escalator rescue

Answer 11

Stop escalator and use hand pressure or crank to move the treads backwards