Click the title of a Hazard Alert to download the PDF.


Hazard Alert 1


Use of Steel Tile Battens on Trussed Roofs

Roof trusses rely on the tile battens to provide lateral restraint to the top chords, which prevents them from buckling sideways when under load...
 
Hazard Alert 2


Use of Steel Fascia may affect the design of Truss Chord Overhangs

One of the design checks for truss top chord overhangs is for a person standing in the most critical position for the design of the overhang...


Hazard Alert 3

Sub-Standard Punched Strapping and Tensioners

The most common application for punched strapping is in structural wall bracing. AS1684 is the primary reference in the BCA that governs the use of metal straps for...
   

Hazard Alert 4

Roller Pressing LVL

A number of truss plants recently reported concerns about splitting at truss joints involving LVL. Timber splits were observed in both directions as illustrated in the photograph...


Hazard Alert 5

Large Diameter Screws into Narrow Edges of Truss Chords

A number of proprietary self-drilling screws of large diameters (approximately 8mm) have been introduced in recent times to be fastened into the narrow...