The 90° bracket is similar to the standard bracket except that it holds a wood plank at 90° to the roof pitch. This is the most common bracket, and is used primarily as a slide guard.
Some important safety instructions before mounting the brackets:
- Roof brackets must be securely mounted with three 16-penny (16d) nails through the sheathing into the roof rafter
- Maximum horizontal spacing between brackets is 4 feet
- Install the appropriate roof brackets so the plank is level or pitched toward the roof surface
- All two inches of free space above the bracket plank support for unhooking
- The end of the plank must extend at least 6 inches beyond the roof bracket and no more than 12 inches
- Must use 2-inch nominal thickness, scaffold grade planking
- Inspect brackets before use for deterioration, damage or deformation; discard immediately
Remember, slide guards aren’t allowed to be the primary form of fall protection on your safety plan. You can use them in conjunction with other fall arrest systems, such as fall arrest buckets and self-retracting lifelines.