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Fall Clearance Calculation for Full Body Harness || Work at Height Safety.

What is Fall Clearance Fall clearance is the minimum vertical distance needed between the worker’s feet and a lower level (this can be the ground level, but also a lower working platform for example) to prevent the worker from hitting the lower level in the event of a fall. The calculated fall clearance of a specific fall protection system may never be equal or higher than the available clearance between the worker level and a lower platform. For example, if the fall clearance of a fall protection system is 6 meters (19,6 ft) and the distance from the working platform to the lower level is only 5 meters (16,4 ft), a worker will still hit solid ground when using that fall protection system. That’s why a proper calculation of the fall clearance distance from the anchor point is very important! How to calculate fall Clearance distance? Search Calculating the Fall Clearance for a Fall Protection System XSPlatforms Blogs, Carousel After discussing the importance of using a personal energy absorber (PEA) and the role of the fall factor in a fall protection system, we will explain another important element when a fall protection solution is considered: fall clearance. What is fall clearance? Fall clearance is the minimum vertical distance needed between the worker’s feet and a lower level (this can be the ground level, but also a lower working platform for example) to prevent the worker from hitting the lower level in the event of a fall. The calculated fall clearance of a specific fall protection system may never be equal or higher than the available clearance between the worker level and a lower platform. For example, if the fall clearance of a fall protection system is 6 meters (19,6 ft) and the distance from the working platform to the lower level is only 5 meters (16,4 ft), a worker will still hit solid ground when using that fall protection system. That’s why a proper calculation of the fall clearance distance from the anchor point is very important! How is fall clearance calculated for rigid anchor points? Fall clearance is calculated, based on multiple factors: Free fall distance The distance, which you fall before the fall protection system begins to slow you down. According to OSHA standards, this distance should never be more than 1,8 meters (6 ft) and is based on the length of the lanyard and the location of the attachment point of the harness where the lanyard is attached to. Also, the placement of the anchor point and the activation distance of a fall arrester or a Self-Retractable Lanyard (SRL) play a role in this factor. Arrest distance The distance it takes for the personal energy absorber to activate and slow the fall. According to OSHA standards, this distance may not be bigger than 1,1 meter (3,5 ft). A personal energy absorber usually extends 0,8 meter (2,6 ft) in the event of a fall. Harness stretch When a user falls, the harness will stretch and the attachment point (D-ring or loop) is likely to shift. Safety Factor Additional distance to make sure there is enough clearance between the worker and the lower level. Typically measured as 0,6 meters (2,5 ft). Formula to calculate fall Clearance Fall clearance = Free fall distance + Arrest distance + Harness stretch + Safety factor #fallprotection #safetymgmtstudy work at Height Safety