Chapter 17 #39-45 Flashcards
Chapter 17 #39-45
OSHA recently revised their overhead power line clearances for the construction industry.
The new standard requires ___ feet between the device and overhead electric lines of less than ____ kilovolts. For high tension lines of over ____kilovolts, OSHA requires ____ feet of clearance
20/350/350/50
Increasing the angle of the aerial device away from the longitudinal axis of the truck
Decreases the load weight that can be carried safely
An angle perpendicular to the apparatus is
The least stable position
By positioning the truck body in a line with the expected position of aerial use
The stability of the apparatus can be increased.
Stress in aerial device is increased when
The ladder rungs are operated nonparallel to the ground
Or when the apparatus is parked on an incline and the aerial device must operate off the side of the apparatus
Most railroad companies advise that vehicles be kept at least
25 feet from the tracks when possible
And if the aerial must be used over, it must be 25 feet above also
For any given situation, the proper distance between the objective and aerial apparatus is
Is the distance that afford the maximum stability,the best climbing angle,and adequate extension