11.5.10-1 Appropriate Use for Footrests

Whenever a user must work for extended periods in a seat with a seat pan height (measured from the depressed top surface of the seat pan) greater than 45.7 cm (18 in.) above the floor surface, or at a work surface with a height greater than 76.2 cm (30 in.) above the floor surface, a footrest should be provided.1472G In addition, a footrest should be used when the range of adjustment of the chair, work surface, or both, does not permit the user’s feet to be supported on the floor.100