subjects when using ship stairs than ......safer descent chose for more comfortable 85% descent more...

MINIMUM TREAD DEPTH OSHA 1910.25(f) 8.5” ENTIRE FOOT IS STABLE 4” MINIMUM TREAD DEPTH OSHA 1910.25(e) HALF OF FOOT IS UNSTABLE www.lapeyrestair.com The study was conducted by the Department of Industrial Engineering at Virginia Polytechnic Instute and published in the proceedings of the Human Factors Society’s 32nd Annual Meeng. ©2019 Lapeyre Stair, Inc. All rights reserved. ATSvsShipStair012019 ALTERNATING TREAD STAIR SHIP’S LADDER/SHIP STAIRS VS Virginia Tech conducted a study comparing alternang tread stairs to ship stairs and concluded that alternang tread stairs have a clear comfort and safety advantage over ship stairs. ALTERNATING TREAD STAIRS ARE SAFER AND MORE COMFORTABLE THAN SHIP STAIRS BECAUSE THEY HAVE MORE USEABLE TREAD DEPTH TEST SUBJECTS STRONGLY PREFERRED ALTERNATING TREAD STAIRS OVER SHIP STAIRS FOR SAFETY AND COMFORT: CHOSE FOR SAFER TREAD DEPTH 89 % CHOSE FOR SAFER ASCENT 72 % CHOSE FOR MORE COMFORTABLE TREAD DEPTH 85 % CHOSE FOR MORE COMFORTABLE ASCENT 89 % CHOSE FOR SAFER DESCENT 82 % CHOSE FOR MORE COMFORTABLE DESCENT 85 % MORE RECORDED MISSTEPS BY TEST SUBJECTS WHEN USING SHIP STAIRS THAN ALTERNATING TREAD STAIRS MORE OVERALL MISSTEPS 73 % MORE MISSTEPS WHEN DESCENDING WITH A LOAD 129 % TEST SUBJECTS FELT LESS SAFE AND COMFORTABLE ON SHIP STAIRS THAN ALTERNATING TREAD STAIRS FELT MORE LIKELY TO SLIP/TRIP ON ASCENT 64 % FELT MORE LIKELY TO SLIP/TRIP ON DESCENT 85 %

Upload: others

Post on 28-Aug-2020

1 views

Category:

Documents

0 download

Report

Download

Embed Size (px):

TRANSCRIPT

Page 1: SUBJECTS WHEN USING SHIP STAIRS THAN ......SAFER DESCENT CHOSE FOR MORE COMFORTABLE 85% DESCENT MORE RECORDED MISSTEPS BY TEST SUBJECTS WHEN USING SHIP STAIRS THAN ALTERNATING TREAD

MINIMUM TREAD DEPTHOSHA 1910.25(f) 8.5”

ENTIRE FOOT IS STABLE

4” MINIMUM TREAD DEPTHOSHA 1910.25(e)

HALF OF FOOT IS UNSTABLE

www.lapeyrestair.com

The study was conducted by the Department of Industrial Engineering at Virginia Polytechnic Institute and published in the proceedings of the Human Factors Society’s 32nd Annual Meeting. ©2019 Lapeyre Stair, Inc. All rights reserved. ATSvsShipStair012019

ALTERNATING TREAD STAIR SHIP’S LADDER/SHIP STAIRSVS

Virginia Tech conducted a study comparing alternating tread stairs to ship stairs and concluded that

alternating tread stairs have a clear comfort and safety advantage over ship stairs.

ALTERNATING TREAD STAIRS ARE SAFER AND MORE COMFORTABLETHAN SHIP STAIRS BECAUSE THEY HAVE MORE USEABLE TREAD DEPTH

TEST SUBJECTS STRONGLY PREFERRED ALTERNATING TREAD STAIRS OVER SHIP STAIRS FOR SAFETY AND COMFORT:

CHOSE FOR SAFER TREAD DEPTH89%

CHOSE FORSAFER ASCENT72%

CHOSE FOR MORE COMFORTABLE TREAD DEPTH85%

CHOSE FOR MORE COMFORTABLE ASCENT89%

CHOSE FORSAFER DESCENT82%CHOSE FOR MORE COMFORTABLE DESCENT85%

MORE RECORDED MISSTEPS BY TEST SUBJECTS WHEN USING SHIP STAIRS THAN ALTERNATING TREAD STAIRS

MORE OVERALL MISSTEPS73%MORE MISSTEPS WHEN DESCENDING WITH A LOAD129%