With an unrestrained cradle, working in winds over 14 m/s (wind force 6 on the scale of Beaufort) is not advised. Cradles which are continuously restrained to the facade, however, are designed for use in winds up to 20 m/s (wind force 8 on the scale of Beaufort). Winds are stronger and more abrupt at great heights, especially around tall objects such as skyscrapers. Nobody wants to be involved in an incident with a swinging cradle, let alone be responsible for the physical and psychological damage.
A restraint system stabilizes a cradle by keeping it at a fixed distance from the facade. In other words: it secures the position of a cradle in relation to the building. Anyone who’s even been inside a cradle at great heights knows that a stable cradle makes a working at height a lot easier, and therefore a lot quicker.
For advice about the restraint system that is best suited for your project, it’s best to contact us directly.