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Fit of fire boots: exploring internal morphology using computed tomography.
Jeyeon Jo1,2, Huiju Park1
1Department of Human Centered Design, Cornell University, USA.
Summary
Fire boot fit can now be objectively measured using computed tomography (CT). This technology visualizes internal boot dimensions, revealing significant fit issues like excessive toe box and ankle voids, crucial for firefighter safety.
Area of Science:
- Biomechanics
- Ergonomics
- Medical Imaging
Background:
- Fire boot fit is critical for firefighter safety and performance.
- Subjective feedback on boot fit is unreliable and can lead to dangerous situations.
- Objective methods are needed to quantify fire boot fit.
Purpose of the Study:
- To demonstrate the potential of computed tomography (CT) for quantifying and visualizing fire boot fit.
- To compare the internal dimensions of two fire boot models with firefighter foot measurements.
- To identify specific areas of poor fit in fire boots.
Main Methods:
- Utilized computed tomography (CT) to create high-resolution three-dimensional (3D) models of two fire boot products.
- Measured internal boot dimensions from the 3D models.
- Compared internal boot dimensions with direct measurements of local firefighters' feet.
- Performed simulation analysis of foot-to-boot fit using 3D models.
Main Results:
- CT successfully quantified and visualized internal fire boot dimensions.
- Significant discrepancies were found between boot internal dimensions and firefighter foot measurements.
- Identified large void spaces around the toe box and ankle, and a narrower ball width in the boots compared to feet.
Conclusions:
- Computed tomography (CT) offers a viable objective method for assessing fire boot fit.
- Objective fit analysis can identify design flaws and improve safety for firefighters.
- Addressing identified fit issues can enhance firefighter mobility and reduce risks on the fireground.
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