Scaffolding system

Abstract

A multi-level construction scaffold comprises a pair of H-shaped end frames spaced by horizontal guard rails. The guard rails are pivotally connected at opposed ends thereof to the end frame members, thereby allowing the guard rails to pivot in parallel when one of the frame member is lifted relative to the other. Each end frame includes a pair of uprights interconnected by a horizontal platform support located at a distance below the guard rails engaged with the end frames. In this way, the safety guard rails of a next level to be erected can be installed directly from the underlying level.

1  to  7 . (cancelled)  
     
     
         8 . A multi-level construction scaffolding comprising at least first and second levels, each of said first and second levels comprising a work platform supported at opposed ends thereof by a pair of generally H-shaped trusses interconnected by a pair of guard rails extending above said work platform, each truss having a pair of uprights interconnected to each other at a location intermediate their top and bottom ends by a horizontal platform support member upon which the platform rests, wherein the guard rails and the work platform of a same level are supported by the same pair of H-shaped trusses.  
     
     
         9 . A multi-level construction scaffolding as defined in  claim 8 , wherein the two guard rails are respectively engage with first and second vertically spaced-apart pivot points provided on each truss at a distance above said platform support member thereof.  
     
     
         10 . A multi-level construction scaffolding as defined in  claim 9 , wherein at least one of said first and second levels further includes a diagonal brace interconnecting the trusses of a same level, and wherein said diagonal brace extends from one of said first pivot points of a first one of said trusses, said diagonal brace being connected at an opposed end thereof to a third pivot point provided below the platform support member of a second one of said trusses.  
     
     
         11 . A multilevel construction scaffolding as defined in  claim 8 , wherein each of said trusses includes a pair of opposed diagonal members extending upwardly from said uprights to said platform support member.  
     
     
         12  to  14 . (cancelled)