16. Introduction to Ariel fire apparatus

Question 1

The two most common materials for construction of Ariel ladders are

Answer 1

Heat treated aluminum alloy and steel

Question 2

Ariel ladders designed and built with __ bracing as a standard feature provide greater strength then those with older designs.

Answer 2

K

Question 3

Hoist cylinders are sometimes referred to as

Answer 3

Elevating or lift cylinders

Question 4

The end of the piston rod outside the cylinder is fitted with a __ that is anchored to the aerial device or to the turntable.

Answer 4

Trunnion

Question 5

Is the most common type of Ariel fire apparatus located in North America

Answer 5

Aerial ladder apparatus

Question 6

The minimum required floor area of a platform is

Answer 6

14 ft.²

Question 7

Each platform must have a rail completely enclosing the floor area with no openings under the railing greater than

Answer 7

24 inch

Question 8

A kickplate is required at floor level and should be _ inches high

Answer 8

4 inches

Question 9

NFPA 1901 requires the water fog curtain nozzle to operate at least

Answer 9

75 gpm

Question 10

$$$

All elevating platform and must have a minimum load capacity of __lbs

Answer 10

750 lbs fully extended

500 with charged waterway

Question 11

The water delivery system must be capable of discharging at least 1000 gallons per minute at __ PSI nozzle pressure when the aerial device is in any position.

Answer 11

100

Question 12

Notes

Huck bolted- only removed by drilling

First elevate then rotate then extend

Common recommended length of power cords should not exceed 200 feet per reel

Answer 12

The most common aerial ladder platform apparatus in service today is the straight chassis three axel vehicle with a rear mounting aerial device.

Check and fill hydraulic fluid only when the stabilizers and aerial devices are all in there stowed positions

Arial Apparatus tests are grouped into two basic categories pre-service test and service test

The best guarantee that the apparatus will perform within its design limitations is an organized system of apparatus testing and regular maintenance.

Question 13

The extension and retraction cables are usually corrosion resistant aircraft quality cables made with a high strength steel called ___

Answer 13

Plow steel

Question 14

There are two types of pre-pipe waterway systems

Answer 14

Bed ladder systems and telescoping waterway systems

Question 15

Most the ladders with detachable latter pipe appliances restrict the sideways movement of the nozzle to about __ degrees either side of center.

Answer 15

15°

Question 16

Are the most common power source use for emergency services and can be portable or fix to the apparatus

Answer 16

Generator

Question 17

$$$

The most commonly used tools are hydraulic power extraction tools.
Hose distance __ feet or greater from the hydraulic pump may have a negative affect on to operation.

Answer 17

100 ft

Question 18

Since the tiller axle is a steering axle, steering wheel free play must not exceed __ inch on a 20 inch wheel or ___° on any other size steering well.

Answer 18

2 inch

10°

Question 19

When testing the emergency power unit, the main hydraulic system should be disengaged and a control valve must be open before turning on the pump to prevent ___

Answer 19

Deadheading