SUPPORT FACTOR OF OFFICE WORK CHAIRS

Abstract: The solution of the working chair as a real object of the human working environment is important from the viewpoint of construction of the seat, but also of the back, since these are the elements which are in a direct and close connection to the human body. The support factor (or comfort index) as one of the factors of sitting comfort results from the mechanical characteristics of the observed chair. This work shows the results of ‘’mechanical comfort’’ which chair can offer to the user. The results of determining the seat comfort of sitting on office chairs are shown through the index of comfort (support factor) of chairs obtained from elastic characteristics of materials in the seat and chair, according to technical specifications HRS ENV 14443. The sitting position is the most frequent working position of the modern man industrial developed world. Independently of the type of the work, proper and physiologically correct sitting posture diminishes the fatigue during work and the strain of the spine, and the suitable sitting position significantly contributes to the increase of concentration and work efficiency. Keywords: office work chair, sitting, comfort sitting, support factor.