3. Specifications 3.1. Adjustable Height Workstations 3.1.1. Stability - Function 3.1.1.1. Requires completely separate independent electric floor supported, adjustable work surfaces for both monitor and keyboard. 3.1.1.2. Console must demonstrate stability at full extension. Maximum deflection of ½” is allowed when a horizontal load of 100 lbs. is applied to the center of each work surface. 3.1.1.3. Each work surface (input and monitor) shall have a separate lifting equipment weight capacity of 300lbs. minimum which does not include weight of worksurface 3.1.2. Keyboard/Input Surface – Sitting/Standing Keyboard Surface height requirements are considered paramount to proper ergonomic positioning. Keyboard Surface width must accommodate multiple keyboards or other input devices and still provide room for note taking on either right- or left-hand side with the use of two keyboard’s and two mice. 3.1.2.1. Keyboard surface shall have static load capacity of 500lbs to prevent damage from users sitting / leaning on or using the surface as an aid in standing. 3.1.2.2. Keyboard surface must lower to 5th percentile seated female elbow height dimension (22") from the floor to the top of the keyboard surface. 3.1.2.3. Keyboard surface must raise to at least standing elbow height for 95th percentile male user (46.5") from the floor to the home row of keyboard. 3.1.2.4. Keyboard surface must be separately electrically adjustable with electronic controller having digital readout in one (1) cm increments to enable precise position replication and must have provisions for connection to network/computer for software used to control console from computer/device. 3.1.3. Monitor Surface – Sitting/Standing 3.1.3.1. Monitor Surface must lower to allow positioning of monitor so that the gaze angle of the 5th percentile seated female to the center of the screen ranges between -15° and -25° from horizontal eye level. 3.1.3.2. Monitor Surface must raise to 48" to allow positioning of monitor so that the gaze angle of the 95th percentile standing male to the center of the screen ranges between -15° and -25° from horizontal eye level (69¼”) using a 22" monitor. 3.1.3.3. Monitor Surface must be wide and deep enough to accommodate up to eight monitors LCD flat panel monitors on a single level without stacking. 3.1.3.3.1. If monitors are stacked, monitor surface must be able to lower below the keyboard surface to maintain proper viewing angles for most users. 3.1.3.4. Monitor surface must be separately electrically adjustable with electronic controller having digital readout in one (1) cm increments to enable precise position replication and must have provisions for connection to network/computer for software used to control console from computer/device 3.1.3.5. Monitor surface must be engineered to anticipate the possibility of technicians needing to stand or kneel on console to service equipment and shall be capable of supporting a 500 lb. static load.
