Horizontal lifeline systems are an often used solution for safely working at height. The system consists of multiple anchor points, connected via a flexible line to which users attach their lanyard. A horizontal lifeline can be installed on most roof surfaces, walls or overhead structures. Most horizontal lifelines must be designed specifically for a project.
Properly calculating a lifeline is complex, but mandatory. After all users have to be able to rely on the system to prevent them from falling (work restraint) or for arresting their fall (fall arrest) should one occur. The calculation of a horizontal lifeline system is complicated because of the amount of variables involved, not to mention that every project is unique.
Because of this complexity and because a horizontal lifeline is literally a user’s life line various health and safety bodies in different countries require that the design of a custom lifeline system is verified by testing and certified by an engineer or suitably qualified person.