Stability Criteria for Ladders and Stepladders Abstract Falls from heights are one of the main causes of accidents in Quebec and the second-most costly cause, amounting to an average of $397 million per year from 2010 to 2012. Statistics for injuries involving ladders or stepladders reveal an increase over the years. A ladder’s stability is mainly affected by its angle of slope. Studies of the topic have concluded that the ideal angle of slope to avoid foot slippage or tipping backward is approximately 75°. In addition to the slope, the worker’s height and the task to be performed affect a ladder’s stability. This study aims to determine the limits of stability during the use of portable ladders and stepladders according to these criteria. Produced Under this Project Scientific Reports Ladder and Stepladder Stability Criteria Research Report: R-1113 Video Reports and Conferences Ladder and Stepladder Stability Criteria: how to avoid falls? Conference: CF-1113Ladder and Stepladder Stability Criteria Video Summary: CS-1113 Simplified Articles Échelles et escabeauxComment éviter les chutes Volume 34, n0 1 Other Project(s) You May be Interested in Choice of a fall arrest and positioning system for ironworkersAnchoring system for guardrails on flat roofs for roofersStudy of the aging, degradation and service life of fall protection equipment – LifelinesPrevention fact sheet for flat-roof guardrail anchor systems for roofersEvaluation of a horizontal lifeline system and anchorages used in installing residential roofsUpdate of the technical guide to designing horizontal lifelinesHorizontal Lifeline System DesignStrength of Wood Guardrails Secured to New Structures and Load Behaviour of Metal Guardrails Secured to Existing StructuresImproving the User-Friendliness of Construction Industry Safety Harnesses by Assessing Physical and Physiological Constraints Additional Information Type: Project Number: 2016-0034 Status: Completed Year of completion: 2020 Research Field: Mechanical and Physical Risk Prevention Team: Bertrand Galy (IRSST)