1. Aerial Apparatus Operator Types and Construction of Aerial Apparatus

2. Types of Aerial Apparatus Aerial Ladders Elevating Platforms

3. Aerial Ladders Power operated ladder mounted on special chassis 50 to 135 feet Main Uses: –rescue, ventilation, elevated stream and access to upper levels

4. Elevating Platforms Ladder Platform Telescoping Aerial Platform Articulating Aerial Platform

5. Ladder Construction Consist of 2 or more sections Constructed of metal Supporting beams triangle truss Components welded or riveted Ladder Rungs

6. Minimum Capacity Minimum rated capacity of 250 lb. Aerials rated at 110 ft. or less –with stabilizers set

7. Elevating Platforms Ladder Platform Telescoping Aerial Platform Articulating Aerial Platform

8. Ladder Platform Two or more sections with passenger platform 85 to 110 feet Single chassis vehicle usually three axle Constructed of metal

9. Ladder Platforms (cont.) Safety aspects of platforms Backup hydraulic system required Two operating control stations Communication System

10. Telescoping Aerial Platform Not intended for climbing Two or more telescoping sections Has extensive safe operating area

11. Articulating Aerial Platform Sections connected by hinge –folds like an elbow

12. Common Features of Aerials Hoisting Cylinders Extension Cylinders and cables Turntable Control Pedestal Communication System Locking Devices Air System

13. Hoisting Cylinders 850 to 3,000 psi Safety Valves Bleed down valve

14. Extension Cylinders and Cables Located on base section Extend second section Cables used to extend fly section Cables made of aircraft-type galvanized plow steel Chain drive may also be used

15. Turntable Provide continuous rotation of the aerial device May be hydraulic, mechanical, or electric driven

16. Control Pedestal Most positioned on the turntable to the side of the aerial device Some located on the rear or side of apparatus Lower control operator must not be contact with ground Platform require a control station in the platform

17. Control Pedestal (cont.) Turntable controls override platform control Control levers –separate levers –joystick Engine speed switch

18. Control Pedestal (cont.) Light Switch Hydraulic oil pressure gauge Rung alignment indicator Engine starter switch Inclinometer Stop and Lock Controls Hydraulic lock valve

19. Communication System Permits firefighter at tip to communicate with ground operator

20. Locking Devices and Systems Maintain desired elevated position Maintain ladder in the bed

21. Air System Capable of supplying air to two personnel Storage cylinders for a minimum of 400 cu. Ft. air Pressure rating of 3 times expected working pressure Relief valve Pressure in piping limited to 100 psi