Page 176 - Ship Construction.DJ Eyres 6Ed

Ch16-H8070.fm Page 165 Wednesday, October 18, 2006 6:57 AM
Bottom Structure 165

(a) TRANSVERSELY FRAMED
DOUBLE BOTTOM
Margin plate
Tank top

--- ใช้เพื่อการศึกษาเท่านั้น---

Continuousงสมุด ศูนย์ฝกพาณิชย์นาวี
Solid floor
Intercostal
side girder
Continuous
centre girder
Flat plate keel
Bracket floors

(b) LONGITUDINALLY FRAMED
DOUBLE BOTTOM
Inner bottomึ
Solid floor Tank top
longitudinals
Solid floor

Bottom
longitudinals
Intercostal
งานห้อ Flat plate keel Bracket
side girder
centre girder
floors

FIGURE 16.3 Double bottom construction

buckling occurs as a result of the longitudinal bending of the hull, and may
be avoided by having the plating longitudinally stiffened.
Double bottoms in the way of machinery spaces which are adjacent to the
after peak are required to be transversely framed.

INNER BOTTOM PLATING The inner bottom plating may in a general
cargo ship be sloped at the side to form a bilge for drainage purposes. It is