18.104.22.168.12 Antislide Devices
These devices shall consist of raised objects fastened to the decks, no closer than 100 mm (4 in.) to the handrail nor further than 300 mm (12 in.) from the handrail. They shall be spaced not more than 2000 mm (78 in.) apart as measured on a line parallel to the direction of travel and not more than 300 mm (12 in.) as measured on a horizontal line perpendicular to the direction of travel. The height shall be not less than 50 mm (2 in.). There shall be no sharp corners or edges. See Nonmandatory Appendix I, Figure I-6.