SPRAT - Society of Professional Rope Access Technicians Certification Practice Test
SPRAT Rescue and Emergency Procedures 2
A 3:1 (Z-rig) haul system is commonly used in rope access rescue primarily because:
Select your answer
A
It provides a 3:1 mechanical advantage, tripling the hauling force relative to input force
B
It allows the rope to be rigged without any additional equipment beyond standard ascenders
C
It is the only haul system approved by SPRAT for rescue operations
D
It automatically locks if the haulers release the rope
Hint
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