Chairs should be designed to adjust for and accommodate several factors:
Seat Height: Seat height should be pneumatically adjusted while seated. A range of 16 – 20.5 inches off the floor should accommodate most users. Thighs should be horizontal, lower legs vertical, feet flat on the floor or on a footrest. Seat height should also allow a 90 degree angle at the elbows for typing.
Seat Width and Depth: A seat width of 17-20 inches suffices for most people and should be deep enough to permit the back to contact the lumbar backrest without cutting into the backs of knees. The front edge should be rounded and padded. The seat slant should be adjustable (0 to 10 degrees). Avoid bucket-type seats. The seat should swivel easily.
Backrest: The backrest should offer firm support, especially in the lumbar (lower back) region, should be 12-19 inches wide, and should be easily adjustable both in angle and height, while sitting. The optimum angle between seat and back should permit a working posture of at least 90 degrees between the spine and thighs. Seat pan angle and backrest height and angle should be coordinated to allow for the most comfortable weight load on the spinal column.
Seat Material: A chair seat and back should be padded enough to allow comfortable circulation. If a seat is too soft, the muscles must always adjust to maintain a steady posture, causing strain and fatigue. The seat fabric should “breathe” to allow air circulation through clothes to the skin.
Armrests: Armrests are optional, depending on user preference and task performed. They should not restrict movement or impede the worker’s ability to get close enough to the work surface. The worker should not rest his or her forearms while keying.
ERGONOMIC CHAIR CHECKLIST
1. Chair has wheels or castors suitable for the floor surface
2. Chair swivels
3. Backrest is adjustable for both height and angle
4. Backrest supports the inward curve of the lower back
5. Chair height is appropriate for the individual & the work surface height
6. Chair is adjusted so there is no pressure on the backs of the legs, and feet are flat on
the floor or on a foot rest
7. Chair is adjustable from the sitting position
8. Chair upholstery is a breathable fabric
9. Footrests are used if feet do not rest flat on the floor
People ask us what we think is the best office chair when you are starting your company and budget is a great consideration. My answer is “one that is comfortable to the majority of the users and fits your style in terms of looks and budget”. 🙂
There are so many chairs available that it becomes mind boggling trying to seat an entire office with just one chair. Price is always a big factor, so you want to get something that will work and be comfortable as well as not break the bank.
First you should to consider if there are any specific ergonomic needs in your group such as wrist, back or hip problems. Are your users mostly men or woman or a mix? What are the job functions of your users? Do they sit and work at a computer all day, or are they walking around the office a lot and occasionally need to relax in a stretching position? These are a few of the many factors you need to think about when you are picking a single chair for many users.
To help with your decision, we at Commercial Design Control Inc. have come up with two chairs that we call the “one size fits all”.
When using these chairs, you can be quite confident that you will be please the majority of the population in your office. Special needs aside, these chairs are supportive and cover the basic ergonomic functions with a price that is easy to handle.
I like to use a Manager’s chair style that doubles as a board room/conference room chair, and a good task chair to serve your users in admin, sales, customer service and accounting. Here are two chair models that will get you started.
CDC – 3121 – Mid Back Chair
Price $ 179.00 per chair
“Comfort level high”
Model CDC – 5500 has a thick padded seat and breathable black mesh back for a high tech style, comfort and durability.
Model CDC – 3121 is a mid-back ergonomic chair with a molded foam seat and back with plastic back guard protecting against walls and sharp edges. This chair is more geared towards traditional comfort and excellent for a Manager’s office or Board Room space.
Chair models include the following:
Lumbar support provides support to the lower back.
Pneumatic seat height adjustment personalizes the height of the chair.
2-to-1 synchro tilter reclines while keeping the seat cushion level.
Adjustable arms for raising and lowering arm heights
Base and Wheels
Heavy duty nylon base and dual wheel carpet friendly casters
Warranty – 15 years warranty on all non-moving metal parts, 2 years on components parts and 3 years warranty on upholstery fabric and foam makes them one of the best chairs out there.
These are two chairs that will cover your most basic needs, however we suggest looking at our website for more ideas of recommended seating and how to select a chair that will work for your office.