More detailed information:
308 Reach Ranges
308.1 General. Reach ranges shall comply with Section 308.
308.2 Forward Reach.
308.2.1 Unobstructed.Where a forward reach is unobstructed, the high forward reach shall be 48 inches (1220 mm) maximumand the lowforward
reach shall be 15 inches (380 mm) minimum above the floor.
308.2.2 Obstructed High Reach. Where a high forward reach is over an obstruction, the clear floor space shall extend beneath the element
for a distance not less than the required reach depth over the obstruction. The high forward reach shall be 48 inches (1220 mm) maximum where the reach depth is 20 inches (510mm) maximum. Where the reach depth
exceeds 20 inches (510 mm), the high forward reach shall be 44 inches (1120 mm) maximum, and the reach depth shall be 25 inches (635mm) maximum.
308.3 Side Reach.
308.3.1 Unobstructed. Where a clear floor space allows a parallel approach to an element and the side reach is unobstructed, the high side reach shall
be 48 inches (1220 mm) maximum and the low side reach shall be 15 inches (380 mm) minimum above the floor.
EXCEPTION: Existing elements shall be permitted at 54 inches (1370 mm) maximum above the floor.
308.3.2 Obstructed High Reach. Where a clear floor space allows a parallel approach to an object and the high side reach is over an obstruction, the
height of the obstruction shall be 34 inches (865mm) maximum and the depth of the obstruction shall be 24 inches (610 mm) maximum. The high side reach shall be 48 inches (1220 mm) maximum for a reach depth of 10 inches (255 mm) maximum. Where the reach depth exceeds 10 inches (255mm), the high side reach shall be 46 inches (1170mm) maximum for a reach depth of 24 inches (610mm) maximum.