| 摘要 |
PROBLEM TO BE SOLVED: To provide an opening structure of a deck board girder which can sufficiently secure girder strength even if a long ellipse opening is provided, can reduce the amount of whole equipment by making arrangement of the equipment easy and enlarging the sizes of a duct, a pipe and a cable run or the like, and cope with the change without spending a lot of labor hours and cost for changing work of the hull even when the arrangement of the equipment is changed. SOLUTION: The opening structure of the deck board girder is constituted by providing the ellipse opening on the web of the deck board girder along the longitudinal direction, forming a spigot along the opening edge of the ellipse opening, arranging a flat bar perpendicular to the web of the deck board girder connecting between vertical spigots at the central part inside of the ellipse opening, and arranging the rib on the web of the deck board girder vertically located on the spigot on the same plane as the flat bar. COPYRIGHT: (C)2004,JPO
|
