Is there a minimum size requirement for impalement protection caps used to guard rebar?
OSHA standards do not specify a minimum diameter for caps used to eliminate impalement hazards. The cap must be large enough to dissipate the forces of impact to prevent impalement from a reasonably foreseeable fall distance.1It should be noted that the use of impalement protection caps is but one method of protection; covers or wooden troughs can be another means of meeting the guarding requirement.
