Title: +038=627.001-##001T_03-Fasadevasksystem NorAcon - International Code of Practice (ICOP).pdf
L.2.6.7.1.1 Horizontal anchor lines, also known as horizontal lifelines, may be rigid, e.g. a rigid rail, or flexible, e.g. a tensioned textile or steel-wire rope. As the name suggests, they are rigged in a horizontal plane, usually within a tolerance of +/-15°. Horizontal anchor lines can be used as part of a work restraint, rope access, work positioning, rescue or fall arrest system.L.2.6.7.1.2 For work restraint systems, horizontal anchor lines are used to stop a person from reaching zones where the risk of a fall exists, e.g. by the user being connected to the horizontal anchor line by a lanyard of a length that prevents them from reaching the unprotected edge of a building. When calculating the length of the lanyard, allowance should be made for any elongation (sag) in the horizontal anchor line if it were to come under load.