TRAINING MANUAL Flashcards
Ladders in a trench
Every 25 ft
Trench depth
Minimum 4 ft
Temporary spoil pile distance from trench
2 feet
Rules for safe auto extrication
- Size up- Read the wreck
- stabilize vehicle/ control battery
- cut seatbelt early
- Pry/peek
- 5/10/20 rule
- treat all systems active
Panalized roof plywood thickness
1/2” decking
Gusset plate truss spacing
2 ft
Strong/weak points of panalized
Strong-lam beams, purlins, Perimeter
Weak rafters, sweet pipes supports
Distance for control lines from transmission lines
100 ft
Current VCFD rope lengths (4)
600, 300, 200, 150
Prussik lengths
5.5 ft and 4.5 ft
Prussik diameter
8 mm
Carabiners weight ratings (alum./steel)
A-6000 lbs
S- 9000 lbs
Minimum bars required on brake bar:
6
Washing rope procedure
Chain stitch rope Max 500 ft. 1/8 cup woolite Rinse 3 times Hang dry out of sun
typical reasons for drowning(3):
Overestimate ability
Underestimate environment
Lack of training/equipment
Water speed doubles, force increases ______ times
4
Flow rate calculated in
CFS- cubic feet per second
Water flow separates into layers moving at various speeds
Laminar Flow
water corkscrew motion away from shore
Helical flow
Direction most of the water is flowing
Current vector
Water recirculating behind an obstacle
Hydraulic