Contract - March 2010 - (Page 64)

essay: from the past As regards working chairs, there must be noted some basic rules: a good work chair should offer stable support for the body and permit as many satisfactory working positions as possible, without the work as such being impeded. The operator should easily be able to change his position. The seat of the chair should be horizontal, or almost so, and its height should permit the feet to be in full contact with the oor, with knees bent at a straight angle. The depth of the seat should be such that when sitting upright in the chair, using the backrest, two thirds of the underside of the thighs should rest against the seat. The width of the seat should permit minor movements in lateral direction, and the surface of the seat should be upholstered, but not too soft. A rotary as well as vertically adjustable chair in most cases offers many advantages. The backrest should be stable and provide suf cient support for the upper body. With work mostly con ned to the table, the backrest should be tted in an upright direction. With freer work forms, changes in position may be accepted and the back rest may be slightly inclined backwards. Our knowledge of ergonomics has sources in many different research areas: anthropology, functional anatomy, work physiology, psychology, technical hygience, industrial medicine, technology, etc. The back rest usually should be adjustable both in a vertical and horizontal direction. Bigger types of of ce chairs generally lack this adjustability. If a chair is provided with arm rests, these should be in proper height from the seat level. In some types of work, however, typing for example, the arm rests would hinder the arm movements and should be avoided. Need free leg movement Work table and work chairs should be well-suited to each other. This is generally the case, provided that the height of the work table is at elbow level, when the operator is sitting upright with lowered shoulders and arms hanging freely along his sides. The legs must have room enough under the table for free movements forward, as well as laterally. The necessity of free leg movement also makes it important that the space between the seat and tabletop is kept free from cases and other place-consuming items. When the character of the work permits, or when intermittent changes between sitting and standing position are required, the workplace should be so arranged that the operator can sit down easily or stand comfortably. In such case, the worktable should be arranged for standing position. The height of the chair and the size of the footrest should contribute to a comfortable sitting position. The footrest should be stable and suf ciently large to permit varying leg movements. It should be horizontal or slightly inclined. When the table is too high, the operator is apt to raise his shoulders, and, in the long run, this can induce tiring strain on neck and shoulder muscles. www.contractdesign.com Select No. 34 at ContractDesign.com/readerservice http://www.bendheim.com http://www.bendheim.com http://www.contractdesign.com http://www.ContractDesign.com/readerservice

Table of Contents for the Digital Edition of Contract - March 2010

Contract 3/10
Contents
Editor’s Note
Introduction
Resources
Perspectives
Essays from the Past:
The Contract Design Dilemma (May 1962)
Space Planning Symposium (July 1963)
Changes in Workplaces Reflect Changes in Task Structure (June 1970)
Women Need Feminine Desks (June 1970)
Name “Interior Designer” Is a Misnomer Because of Broader Duties (August 1970)
Research Reveals Proper Height, Width, Depth of Furniture, from Office Chairs to Library Tables (September 1970)
Astounding Technology Portends Drastic Office Changes in the ’80s (January 1980)
Is the Office Really Necessary? (January 1989)
If You Cut Your Fee, Do You Bleed? (June 1990)
Design: Retrospective
Essays on the Future:
More Happiness, Less Stuff: By Ray C. Anderson
The Social Aspect of Social Responsibility: By John Cary
Leading in the Global Market: By Ross Donaldson
Technology Trends: By Cathryn Barrett
Inadmissible Evidence: By Michael Berens
Practice
Designers Rate: Eight Designers Pick Their Favorite Three Commercial Interiors Products of the Last 50 Years
Ad Index

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