Rungs 1¼ in diameter and spaced 14” apart.Beams and Rungs form the major components of a ladder.Pompier Ladder (Scaling Ladder) - Used to climb from floor to floor via exterior windows on multi story buildings.Combination Ladder - Multiple use ladder - step ladder, extension, and single.Extension Ladder - An adjustable length ladder with a Bed and one or more fly sections.Folding Ladders - Single ladders with hinged rungs and footpads to allow for attic or narrow space access.Roof Ladders - Single Ladder from 12 - 24 feet (4m - 8m), with folding hooks to anchor over roof ridge.Single/Wall Ladder - Consists of only one section from 6 - 32 feet (2m - 10m).Truss Blocks - Separation pieces between rails of a trussed ladder.Tormentor Poles - Staypoles for added leverage and stability on ladders 40 - 50 feet.Tie Rods - Support rods running from one beam to another.Stops - Wood or metal pieces that prevent fly sections from being extended too far.Rungs - Cross members that provide a foothold for climbing.Rails - The two lengthwise members of a trussed ladder separated by truss blocks.Pulley - Grooved wheel which the Halyard is drawn.Protection Plates - Strips of metal attached to ladders at chafing points e.g.Middle section of a Triple Extension Ladder Mid Section - Also known as Intermediate, Middle, or First Fly.Hooks - Curved metal devices installed on the tip end of ladders.Heat Sensor label - Label affixed to the inside of each beam to indicate if ladder has been exposed to extreme heat.Halyard - Rope or cable used in hoisting and lowering fly sections.Guides - Wood or metal strips on an extension ladder that guide the fly sections.Footpads - Rubber or neoprene foot plates, usually of the swivel type, attached to the butt of the ladder.Sometimes known as Top Fly or Second Fly on ladders with more than one extension. Fly - Upper section of an extension ladder.Dogs/Locks/Pawls - Devices attached to beam on fly sections to hold fly sections in place once extended.Butt Spurs - Safety plates or spikes attached to Butt to prevent slippage.Butt/Heel - Bottom end of ladder that contacts ground.Bed Section - Lowest and widest section of an extension ladder.Beam - Main structural member of a ladder supporting the rungs.Candidates be able to identify, carry, raise, climb, inspect, and maintain fire service ground ladders.Meet the standards for Firefighter I as outlined in Chapter 3 NFPA 1001, 1997.
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