ISO 12215-6:2008 小型船—船体の構造と寸法—パート6：構造の配置と詳細 | ページ 6

3.1

loaded displacement mass

m_LDC

mass of the craft, including all appendages, when in the fully-loaded ready-for-use condition, as defined in ISO 8666

3.2

sailing craft

Note 1 to entry: In this part of ISO 12215, non-sailing craft are referred to as motor craft.

3.3

grid

grillage

set of transverse stiffeners that intersect a set of longitudinal stiffeners

3.4

secondary stiffener

stiffening element that directly supports the plating

Note 1 to entry: In a stiffener grillage, secondary stiffeners usually correspond to stiffeners having the lower second moment of area, e.g. stringers, frames, partial bulkheads. The spacing of secondary stiffeners generally corresponds to the shortest unsupported span of the attached plating. In the case of stiffeners with a substantial base width (i.e. top hat stiffeners), the stiffener spacing will be the unsupported panel span plus this base width.

3.5

primary stiffener

stiffening element that supports the secondary stiffening element

Note 1 to entry: In a stiffener grillage, primary stiffeners usually correspond to stiffeners which have the higher second moment of area, e.g. structural bulkheads, girders, web frames. The spacing of primary stiffeners generally corresponds to the span of secondary stiffeners.

Note 2 to entry: Some stiffeners, such as bulkheads, deep girders or web frames, may also contribute to resisting global loads.

3.6

stringer

longitudinal stiffener, generally designated a secondary stiffener (3.4) , which supports the shell plating

3.7

frame

transverse stiffener, generally designated a secondary stiffener (3.4) , which supports the shell plating

3.8

beam

transverse stiffener, generally designated a secondary stiffener (3.4) , which supports the deck plating

3.9

web frame

substantial transverse stiffener, generally designated a primary stiffener (3.5) , which supports stringers and less substantial girders and is usually connected with substantial deck beams

Note 1 to entry: The spacing of web frames is usually greater than (or some multiple of) the frame or beam spacing.

3.10

floor

substantial transverse bottom stiffener, which may be used to link frames and may also be a partial bulkhead

Note 1 to entry: Floors are often used to support a cabin sole, so the upper edge is generally horizontal. On sailing craft, floors are traditionally used to support ballast keels.

3.11

girder

substantial longitudinal stiffening element, generally designated a primary member, which supports bottom transverse frames or floors, other frames and beams

Note 1 to entry: Bottom girders are sometimes called keelsons.

3.12

bracket

stiffening element, usually of triangular shape, used to reinforce the connection of two stiffeners and to reduce their span

Note 1 to entry: Brackets are also used to transmit local loads.