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Preferred handrail height for spiral stairs--a fitting trial study.

Janne Sinisammal1, Petri Saaranen

  • 1Department of Industrial Engineering and Management, University of Oulu, Oulu, Finland. Janne.Sinisammal@oulu.fi

International Journal of Occupational Safety and Ergonomics : JOSE
|September 11, 2010
PubMed
Summary

Researchers studied preferred handrail heights for spiral stairways, finding 105 cm most popular for descent. Most users found heights between 95-100 cm satisfactory, informing future design models.

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Area of Science:

  • Ergonomics
  • Architectural Engineering
  • Human Factors

Background:

  • Spiral stairways are prevalent in various settings but lack scientific ergonomic data.
  • Existing research on stairways primarily focuses on straight designs, not helical ones.

Purpose of the Study:

  • To investigate and establish preferred handrail heights for spiral stairways.
  • To provide data for improving the safety and usability of spiral stair designs.

Main Methods:

  • Participant surveys on preferred handrail heights during descent on spiral stairs.
  • Collection of anthropometric data from participants.
  • Statistical analysis to determine satisfactory and preferred height ranges.

Main Results:

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  • The most preferred handrail height for descending was 105 cm.
  • A range of 95-100 cm was deemed satisfactory by 95% of participants for descent.
  • A predictive model incorporating anthropometric data and height preferences was drafted.

Conclusions:

  • Optimal handrail height for spiral stair descent is approximately 105 cm.
  • A narrow band of handrail heights is acceptable to most users.
  • The developed model can aid in designing user-specific spiral stair handrail heights.