Welcome to

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Welcome to
FDSOA

• 21st Annual
• Apparatus Symposium

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Firefighter AnthropometricStudy
J. Gordon Routley Michael Wilbur Jen Whitestone
National Fallen Firefighters Foundation
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Why Dont Firefighters Use Their Seat Belts?

• Education
• Emphasize benefits
• Incorporate in training
• Enforcement
• Mandatory use requirement
• Consistent enforcement
• Engineering
• Functionality
• User Friendliness

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Engineering Problems

• Belts too short
• Too complicated and time-consuming
• Difficult to manipulate wearing gloves
• Complicated by SCBA straps
• Seats and seating areas too small for
  firefighters wearing protective clothing

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Seating Dimensions

• NFPA 1901 defines minimum seat dimensions and
  spacing requirements
• based on 95th percentile male
• using data from MIL-STD-1472.

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MIL-STD-1472 Specifications
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NFPA 1901 Minimum Seating Dimensions Based on
MIL-STD-1472
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CAB Cross-Section
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Problems Identified
The general population is growing each
generation is larger and heaver than the previous
generation. Firefighters tend to be larger and
heavier than the general population Diversity is
increasing the range of sizes and shapes of
firefighters who must be accommodated Firefighter
s wear bulky clothing
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Anthropometry
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Anthropometry
We have something in common we are different.
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Anthropometry
Safety
Comfort, Value, Image
Efficiency, Productivity
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One size does not fit all
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Big enough for the 95th percentile male
Too big for the 5th percentile female
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Anthropometric Study of Firefighters

• National Fallen Firefighters Foundation
• IAFC Safety, Health and Survival Section

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Traditional Measurements
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SITTING HEIGHT WITH GEAR
SEAT BELT POSITION
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Reach the pedals or fasten your seat belt?
Is this safe?
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3-D Laser Scan unencumbered
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3-D Laser Scan With protective clothing
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CHEST DIMENSIONS
DEPTH
WIDTH
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CHEST DIMENSIONS
DEPTH
WIDTH
D
E
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LOWER BODY DIMENSIONS
BUTT KNEE
POP LENGTH
HIP WIDTH
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FRS Data MALE FEMALE SUBJECTS
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MALE vs FEMALE
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95 MALE BOUNDARY MODEL POINTS
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Female FRS BB 95 Variation
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Dimensions for Seat Design Multivariate
Analysis (e.g., 95 male boundary points)
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Dimensions for Seat Design Using Summary
Statistics
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CAB Cross-Section
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Complete Data Setavailable fromNational Fallen
Firefighters Foundation
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NIOSH Project Sizing Firefighters and Fire
Apparatus
Hongwei Hsiao, Ph.D. Chief, Protective
Technology Branch National Institute for
Occupational Safety and Health
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Previous NIOSH Projects

• Truck Drivers
• Farm Machinery
• Safety Harnesses
• Other occupational groups

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Planned NIOSH Project

• 2009 -2010 time frame
• 800 Subjects
• 4 Sites
• Montgomery County, MD
• Fort Worth, TX
• Phoenix, AZ
• SUFD, IL

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Planned NIOSH Project

• Anthropometrics
• conventional
• 3D laser scan
• Ergonomics
• Additional test subjects
• Additional measurements