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OFD 1-06
ladders
21
Other
Professional
10/28/2006

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Term
Straight ladder
Definition
Non adjustable consisting of only one section. 12' to 24' in length found on truck companies and may have spurs on each end
Term
Extension Ladder
Definition
Ladders constructed of 2 or more sections. Ladders utilized by OFD 14', 24',28',30',35',40'in length.Truck 2576 and spare LTI have a 14' extension ladder.
Term
Scaler ladder (roof ladder)
Definition
These ladders are normally used on the roof. They have hooks on the end that secure the ladder over the roof ridge.Firefighters usually use these ladders to work off of gaining additional stability.12',14',16',20'in length. Engines carry 14' scaler.
Term
Folding Ladder
Definition
Single ladder with hinged rungs. Come in 8' 16' and 10' being the most common.OFD uses 10'
Term
Combination Ladder
Definition
Also known as an A frame ladder. 12', 14' on truck companies except T-2576.
Term
what type/types of wood is used to construct wooden ladders.
Definition
Coast Douglas Fir Beams

Hickory rungs

Red oak wear parts.
Term
what are the two different types of beam consruction for wooden ladders
Definition
Tapered truss or solid
Term
Which two types of ladders are required to have heat sensors?
Definition
Metal and Fiberglass.
Term
How often do we inspect , clean and maintain our wooden ladders?
Definition
The first Saturday of every month(see apparatus inspection sheet 538-78) They should be inspected after every use.
Term
What is the proper climbing angle at OFD ?
Definition
70 degrees
Term
NFPA 1931?
Definition
Design and verification test for fire department ground ladders
Term
What are two ways to secure yourself when working on a ladder ?
Definition
Leg lock and tie in or safety belt.
Term
what is the absolute minimum number of rungs that should be extended above the roofline, parapet or window sill during firefighting?
Definition
2 rungs is the ABSOLUTE MINIMUM. Atleast 5 rungs if at all possible.
Term
Where should the ladder be placed during a rescue operation ?
Definition
At or below the window sill
Term
What is the climbing angle formula ?
Definition
one fifth of the used portion of the ladder plus 2 feet.
Term
What size extension ladders do OFD truck companies carry ?
Definition
14'(T-2576 and LTI spare) 28'30'35' and 40'
Term
what size straight/scaler ladders do OFD truck companies carry?
Definition
12' 16' 20', 22' straight or scaler, 24' straight.
Term
what size scaler ladders do OFD engines carry ?
Definition
14'
Term
what size folding ladders do we carry?
Definition
10'
Term
what size combination ladders do we carry ?
Definition
12' or 14' except truck 2576.
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