| A | B |
|---|
| Head and Neck Entrapment | Head-first or feet-first entry into the opening |
| Head and neck entrapment expemtions | opening between protective surfacing and the bottom edge of the equipment (rails platforms steps) |
| Accessible openings | completely bounded ridged openings are accessible when the torso test probe can be inserted into the opening to a depth of 4 inches |
| Test procedure for completely bounded rigid openings- torso | place torso probe in the opening rotate teo most adverse orientation and insert 4 inches |
| Test procedure for completely bounded rigid openings- head | opening passes if it does not admit the torso probe when rotated |
| Non-rigid completely bounded openings | Passes if torso can pass a depth of 4 inches |
| Test procedure pass for non-rigid bound openings | Pass - opening does not allow the torso probe to be inserted so deep that the opening admits the base of the probe when it is rotated to any orientation 2. The opening allows full passage of the torso probe and also allows the large head probe to completely pass through |
| Test procedure fail for non-rigid bounded | Fail - opening allows full passage of the torso probe but does not admit the large head probe |
| Boundaries of large openings | opening admits the 9 inch head probe, each portion shall be evaluated for partially bounded opening requirements |
| Partially bounded openings are accessible when | unbounded part of a partially bounded opening is between 1.875 +- .0005 inches and 9 inches in width when measured perpendicular to each surface |
