Clasification Society Rulefinder 2020 - Version 9.33 - Fix

Common Structural Rules - Common Structural Rules for Bulk Carriers and Oil Tankers, January 2019 - Part 1 General Hull Requirements - Chapter 6 Hull Local Scantling - Section 3 Minimum Thicknesses - 3 Primary Supporting Members

3 Primary Supporting Members

3.1 Minimum thickness requirements

3.1.1 The net thickness of web plating and flange of primary supporting members in mm, is to comply with the minimum net thickness given in Table 3.

Table 3 : Minimum net thickness for primary supporting members

Element	Location		Net thickness
Double bottom centreline girder	Machinery space		1.55 L₂^1/3 + 3.5
	Elsewhere		5.5 + 0.025 L₂
Other bottom girder	Machinery space		1.7L₂^1/3+ 1.0
	Fore part of ships with L ≥ 150 m		0.7 L₂^1/2
	Elsewhere and fore part of ships with L < 150 m		5.5 + 0.02 L₂
Girders bounding a duct keel	Machinery space		0.8 L₂^1/2 + 2.5
Bottom floor	Machinery space		1.7 L₂^1/3 + 1.0
	Fore part		0.7 L₂^1/2
	Elsewhere		0.6 L₂^1/2
Aft peak floor	-		0.7 L₂^1/2
Other primary supporting member	Aft part / fore part		0.7 L₂^1/2
	Elsewhere	In oil cargo tanks	5.5 + 0.015 L₂
		For other cases	0.6 L₂^1/2

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