18 Stabilizing The Apparatus

Question 1

Theoretical safety zone that surrounds the center of gravity on aerial apparatus

Answer 1

Gravity circle

Question 2

If the apparatus is parked on a lateral slope the center of gravity will be shifted to what side

Answer 2

Lower side

Question 3

Also called downrigger’s type of stabilizer that extends down from the chassis

Answer 3

Post Type stabilizers

Question 4

Type of stabilizer that extend straight away for the truck and have Jack’s that extend the straight down

Answer 4

Box stabilizers, a.k.a. H stabilizers

Question 5

Also called fulcrum stabilizers, extend down and away from the chassis at an angle

Answer 5

A-frame, scissor, X style stabilizers

Question 6

Type of PTO that is able to being engaged when the main transmission is in neutral

Answer 6

Hot shift PTO system

Question 7

Whenever possible position the aerial device before activating what

Answer 7

Fire pump

Question 8

If the pump is already engaged and operating what needs to be done to activate the PTO for aerial device

Answer 8

Throttle down to idle

Question 9

How much space should be between a wheel chock and tire

Answer 9

Proximately 1 inch

Question 10

Which wheels on the apparatus should be chalked

Answer 10

Manufacture recommendation, both sides of the tire both sides of the apparatus

Question 11

If there is any doubt as to whether or not there is room for stabilizers to deploy what can be used to estimate travel path

Answer 11

Short pike pole, closet hook, arm span

Question 12

Metal plate attached to the bottom of the aerial apparatus stabilizer to provide firm footing on the surface

Answer 12

Stabilizer shoe

Question 13

True false driver can operate more than one control for stabilizers at a time

Answer 13

True

Question 14

Most common type of stabilizer used on newer apparatus

Answer 14

Box stabilizer

Question 15

How large are stabilizer pads

Answer 15

Usually 24 x 24”

Question 16

I’m placing stabilizers by yourself how do you bear the weight of the apparatus

Answer 16

One side at a time incrementally taking weight from one side then the other

Question 17

Downside of fulcrum type stabilizers

Answer 17

Can either be fully deployed or not at all

Question 18

Between the two types of unevenness laterally, or longitude, which of the two is the easiest to correct while stabilizing

Answer 18

Lateral unevenness, side to side

Question 19

Correction of lateral unevenness as possible on grades up to what degrees

Answer 19

Up to 5°

Question 20

When operating with lateral unevenness which side is the preferred side of aerial extension

Answer 20

Uphill side

Question 21

When setting jacks on a lateral grade what side gets lowered first just touching

Answer 21

Uphill side

Question 22

Whenever possible operators should avoid placing stabilizers on what street objects

Answer 22

Curbs, sidewalks, parking lots, valve covers, obstructions

Question 23

What type of road surfaces should be avoided

Answer 23

Unpaved sand or gravel

Question 24

Ice snow and frozen patches are potential stability issues because

Answer 24

They may melt and create void spaces under the stabilizers

Question 25

On frozen ground services the aerial device may slip what can be done to avoid this

Answer 25

Chocks or sand

Question 26

Why should so be avoided when placing aerial device is

Answer 26

May melt the snow or ice producing contact of stabilizers

Question 27

For stabilizers without pins, what locks them.

Answer 27

Hydraulic interlock valves that prevent fluid from bleeding out of the stabilizer

Question 28

To prevent the Chocks from being stuck when lowering the stabilizers what can be done

Answer 28

Move Chocks back slightly before lowering stabilizers

Question 29

Tractor drawn tillers should not position the cab greater than what degrees to prevent poor stability

Answer 29

Greater than 90°

Question 30

Even if raising aerial tilting the cab what should be raised to a eliminate suspension stress

Answer 30

Stabilizers