Chapter 18: Hauling Systems
Minimum system requirements of a Z
Two locking carabiners
Utilizing the SUDOT whistle command system, how many whistle blasts indicate that rescuers should haul?
Two whistle blasts
Which of the following is NOT a technique for a free
Tying the PCD to the belay line
The calculated mechanical advantage for rescue operations is typically actual mechanical advantage (AM
because rescuers are not able to calculate all the possible friction loss. A. False
In a direct pull haul system how much force is necessary to raise a 100
100 lbs of force
What NFPA standard sets the rating of artificial high directional?
1983
With a simple haul system with a 2:1 TMA, how much rope must be pulled to haul a load 10 feet?
20 feet of rope
How much rope must be pulled to haul 10 feet of rope with a 4:1 TMA system?
40 feet
With a 4:1 TMS system how much force is necessary to raise a 100
40 lbs of force
With a 4:1 MA system, if a haul team exerts 1000 lbs of force what could be the resulting force on portions of the system?
4000 lbs
To offer the greatest protection the PCD should be positioned:
As far forward on the hauling system as possible while still being safely in reach of the rescuers
Which of the following is NOT a purpose of a rope grab in a hauling system?
It serves as a belay.
Theoretical mechanical advantage can be calculated as the ratio:
Load:Force required to move load
As a general rule, when two rescue hauling systems are joined at the input of the first, the resulting TMA is obtained by _______ the two TMAs.
Multiplying
Which of the following would NOT be used as a high directional?
Rock
In what type of system do all moving pulleys move toward the anchors at the same rate as each other and the load?
Simple pulley system
What can be used as a soft cam rope grab?
Tandem Prusiks
_______ is a method for calculating the TMA of a compound or complex pulley system, the tension in any one part of the system, and the force on each component.
The T system
What piece of equipment is NOT needed to create a personal set of fours?
Three locking carabiners
Minimum requirements of a 4:1 MA piggyback hauling system include all of the following EXCEPT:
Three pulleys