| There are two basic construction
styles for work platforms, a “ladder board” with handrails
or a truss type that incorporates the handrail within the truss design.
The “ladder board” variety utilizes an “off-the-shelf”
unit constructed of “I” beam rails held together with tubular
rungs molded through the beam’s web, then covered with a perforated
decking. Bracket clips are bolted to the webs at multiple positions along
the stage’s length to support handrail stanchions.
The truss type stage is an all welded frame with
vertical and diagonal members forming a triangular shaped truss. The truss’
top cord becomes the handrail’s top rail and the truss’ lower
cord is used to support cross members that span the stage’s width.
A non-slip flooring covers the cross members to complete the walk area.
Design conditions elaborated upon above for ladder stages should also
be considered in the design of a truss stage. |
