Common Structural Rules - Common Structural Rules for Bulk Carriers and Oil Tankers, January 2019 - Part 2 Ship Types - Chapter 1 Bulk Carriers - Section 5 Cargo Hatch Covers - Symbols
Symbols
For symbols not defined in this section, refer to Pt 1, Ch 1, Sec 4.
PS : Still water pressure, in kN/m2, as defined in [4.1].
PW : Wave pressure, in kN/m2, as defined in [4.1].
PC : Pressure acting on the hatch coaming, in kN/m2, as defined in [6.2].
- FS = 0 and FW = 0.9 for ballast water loads on hatch covers of the ballast hold.
- FS = 1.0 and FW = 1.0 in other cases.
bp : Effective breadth, in mm, of the plating attached to the stiffener or primary supporting member, as defined in [3].
Ashr : Net shear sectional area, in cm2, of the stiffener or primary supporting member.
- fbc = 8, in the case of stiffeners and primary supporting members simply supported at both ends or supported at one end and clamped at the other end.
- fbc = 12, in the case of stiffeners and primary supporting members clamped at both ends.
tc : Total corrosion addition, in mm, as defined in [1.4].
σa , τa : Allowable stresses, in N/mm2, as defined in [1.5].
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