Installation And Use - Guardian Fall Protection 15192 Instruction Manual

Installation and Use

Maximum compatible trench box thickness: 10".
Prior to use, plan the entire Fall Prevention system:
All leading edges of fall hazards must be blocked, or a supplemental Fall Protection system MUST be used in
combination with, but never connected to, the applicable Fall Prevention system.
1. Selected work area must be free of all hazards, including, but not limited to, debris, rot, decay, cracking,
and hazardous materials. NEVER install Trench Box Guardrail Systems on top of gravel or other loose or slippery
surfaces. Guardrail systems must be installed a MINIMUM 10' from power lines and all other electrical hazards.
2. All guardrail posts, guardrails, and any other equipment must be selected and deemed compatible by a
Competent Person. All guardrails MUST be compatible 2" x 4" or 2" x 6" construction grade lumber, or snap-on
metal rails. All lumber guardrails must overlap by a minimum 12" at each end.
3. Toprails must be 42" (+/- 3") above the work surface or, if used in stilt work applications, 42" plus height of
stilts.
4. Midrails must be halfway between the top edge of the guardrail system and the working level (not the
toeboard).
5. All intermediary rails (not the top rail or the midrail)
must not allow for gaps greater than 19".
6. Toeboards are REQUIRED on surfaces with slopes more
than 4/12 (vertical/horizontal), or if a risk exists for tools,
equipment, materials, or other substances to fall down to
a lower level.
7. Toeboards must be a minimum 3½" from their top
edge to the work surface, and must not have greater
than ¼" clearance between their bottom edge and the
work surface. A trench wall may function as a toeboard
if deemed permissible by a Competent Person.
8. Lay out the job by measuring and spacing the
location of Trench Box Guardrail Systems on the work
surface. Failure to properly measure and plan ahead
may result in having to move and reinstall system
components.
5