Page:United States Statutes at Large Volume 47 Part 2.djvu/668

 2272 INTERNATIONAL LOAD LINE CONVENTION. JULY 5,1930. Hatchway covers. Hatchway beams and fore-and-arters. Coamings are to be of steel, are to be substantiruly constructed and, where required to be 24 inches high, are to be fitted with an efficient horizontal stiffener placed not lower than 10 inches below the upper edge, and fitted with efficient brackets or stays from the stiffener to the deck, at intel'vals of not more than 10 feet. Where end co am- ings are protected, these requirements may be modified. Rule X. - Hatchway Oovers. Covers to exposed hatchways are to be efficient, and where they are made of wood, the finished thickness is to be at least 2% inches in association with a span of not more than 5 feet. The width of each bearing surface for these hatchway covers is to be at least 2X inches. Rule XI.- Hatchway Beams and Fore-and-Afters. Where wood hatchway covers are fitted the hatchway beams and fore-and-afters are to be of the scantlings and spacing given in Table 1 where coamings 24 inches high are required, and as given in Table 2 where coamings 18 inches high are required. Angle bar mountings on the upper edge are to extend continuously for the full length of each beam. Wood fore-and-afters are to be steel shod at all bearing surfaces.