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Measuring step geometry using the Nose-to-Nose method: Validity and repeatability

Issue title: IEA 2012: 18th World congress on Ergonomics - Designing a sustainable future

Article type: Research Article

Authors: Johnson, Daniel | Sloan, Gary

Affiliations: Daniel A. Johnson, Inc., 6221 Swayne Dr NE, Olympia, WA, 98516 U.S.A. | Gary Sloan, Forensic Human Factors, 2934 Steamboat Island Northwest, Olympia, WA, 98502 U.S.A.

Note: [] Corresponding author. Email: [email protected]

Keywords: Stairs, risers, runs, measurement, Nose-to-Nose

DOI: 10.3233/WOR-2012-0603-3343

Journal: Work, vol. 41, no. Supplement 1, pp. 3343-3348, 2012

Published: 2012
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Abstract

Precise measurement of stairway geometry is important in order to establish whether a stairway meets design goals, standards and codes. The Traditional method of measuring risers and runs (goings) does not measure the stairs in the way that codes define risers and runs, and does not measure the stairs in the way users experience them. The Nose-to-Nose method does. This study was conducted to determine the validity and repeatability of this method. Two researchers used this method to study the risers and runs on two separate stairways, one carpeted and the other not. Results demonstrated a high degree of validity and repeatability.

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