Title: +038=627.001-##001T_03-Fasadevasksystem NorAcon - International Code of Practice (ICOP).pdf
Anchor slings intended to be looped through themselves (known as lark’s-footing or 2.11.2.14 choking) should be strong enough to allow for the weakening effect. Lark's footing should generally be avoided, unless the anchor sling and the structure or natural feature to which it is to be attached are known to be suitable. See Figure 2.7.2.11.2.15 Where the anchor system comprises one or more anchor slings, care should be taken to ensure that their intended position is maintained at all times and that, when a load is applied, they cannot slide out of place vertically or horizontally, e.g. on a smooth linear structure such as a steel beam, or a tree trunk. Examples of ways to prevent ropes or anchor slings sliding are: