Section 3 Side shell structure
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Inland Waterways Ships, July 2022 - Part 3 Ship Structures (General) - Chapter 6 Machinery Spaces - Section 3 Side shell structure

Section 3 Side shell structure

Parent topic: Chapter 6 Machinery Spaces

3.1 Primary structure

3.1.1 A transverse framing system is to be additionally reinforced by web frames fitted five frame spaces apart. Where a longitudinal framing system is adopted, the spacing of the transverses is not to exceed 2,5 m.

3.1.2 The scantlings of web frames and transverses are to be as required by Table 6.3.1 Web frames and side transverses in machinery spaces.

Table 6.3.1 Web frames and side transverses in machinery spaces

Location Modulus, in cm3 Inertia, in cm4

(1) Web frames in a transverse framing system

 Z = 3,5 × (1,5 + n) × k × s × D 2 3

(2) Side transverses in a longitudinal framing system

 Z = 8 × k × S × D 2 3
Symbols
D, S, s and Z are as defined in Pt 3, Ch 6, 1.3 Symbols and definitions 1.3.1
n = number of frame spaces between the web frames or equivalent structure
D2 = D but need not be taken greater than 1,5 times the effective span of the stiffening member
k = higher tensile steel factor, see Pt 3, Ch 2, 1.3 Steel 1.3.3

Note The web depth of side transverses is to be not less than twice the depth of the slot for the longitudinal.

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