HP LH4r HP Servers - Working In Comfort - Page 11

wic.book Page 7 Friday, December 5, 1997 11:24 AM Working in Comfort Preparing Your Work Environment • A height- and tilt-adjustment feature. It should be easy to adjust your chair height from 40 cm to 52 cm (15.5 inches to 20.5 inches) as measured from the top of the seat pan to the floor. If you are much taller or shorter than average, you may need a chair that can be adjusted beyond this range. Adjust your chair so that the work surface or keyboard tray is at elbow height and your feet are flat on the floor with your knees slightly bent below your hips. Ideally, the seat pan should be able to tilt both forward (minimum of 5 degrees) and backward (minimum of 10 degrees). If the chair has an adjustable seat pan, inclining the seat slightly forward will transfer some of the pressure from the spine to the thighs and feet. This will relieve pressure on your back. • A curved seat edge. The front of the seat should be curved and finished in a “waterfall” edge. • An adjustable back support in both height and forward and backward tilt. It is important that the backrest correctly supports the lower part, or lumbar curve, of the back. • A freely rotating swivel so you can move easily from side-to-side. • Fully adjustable and padded armrests. The chair arms should not interfere with adjusting the chair or moving it close to your work surface. Your Work Surface Ideally, you should be able to adjust the height of your work surface. A simple way to ensure your work surface is at the correct height is to first adjust the height of the seat-pan of your chair. With your chair properly adjusted and your feet firmly on the floor, adjust the work surface height until your forearms are parallel to the floor when you have your fingers on the keyboard or other input device. If possible, choose a work surface with cable management capabilities. This will keep your cables and wires orderly, off the floor and out of your way. It's also best to choose a non-reflective work surface to minimize eye discomfort from reflections and glare. 7