ACCESS FLOORFor installationsinvolving access �oors,rail placement should bedesigned to fall directlyover access �oorpedestals. If railplacement does notcoincide with pedestals,we suggest additionalpedestals be placeddirectly under new raillocation (see added railin illustration). In someinstances, a larger railsize precludes the needfor additional pedestals.Seismic pedestals maybe used when necessary.
Illustrated below are typical �oor-loading conditions with ideal rail placements.
T Y P I C A L F L O O R C O N D I T I O N S
BAR JOIST FLOORWhen possible, systemrails should be placedabove the bar joist’stop chord panel pointsto obtain maximum load-carrying capacity.
additional rail if required
carriage
rails
panel point typical
bar joists
additional pedestals undernew rail location
access�oor panels
pedestals
normal spacing
2’ –oc
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