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

9www.southwestsolutions.com