Criteria

Dimension

Description

A. Normal Reach

Max = 12”

Distance from table edge to hand grasping point with back straight and upper arm near vertical.

B. Extended Reach

Max = 18”

Distance from table edge to hand grasping point with back straight and arm fully extended.

C. Work Distance

1” to 4”

Distance from the table edge to the distance where work is performed most comfortably by the worker.

D. Normal reach width

Max. = 40”

Width of the normal reach area at table edge.

E. Extended reach width

Max = 60”

Width of extended reach area at table edge.

F.  Optimum work area

10” x 10”

Area within the reach envelope best suited for comfortable work.  The optimum work area begins at the work distance or point C.