Symbols

For symbols not defined in this section, refer to Ch 1, Sec 4

t : Net thickness in mm.

t_c : Corrosion addition in mm.

t_gr : Gross thickness in mm.

h_stf : Height of stiffener or primary supporting member in mm.

h_w : Web height of stiffener or primary supporting member in mm.

t_w : Web thickness of stiffener or primary supporting member in mm.

b_f : Face plate width of stiffener or primary supporting member in mm.

t_f : Face plate thickness of stiffener or primary supporting member in mm.

t_p : Thickness of the plating attached to a stiffener or to a primary supporting member in mm.

d_e : Distance in mm, from the upper edge of the web to the top of the flange for L3 profiles, see Figure 3.

d_f : Distance in mm, for the extension of flange for L2 profiles, see Figure 3.

t_{as_built} : As-built thickness, in mm, taken as the actual thickness provided at the newbuilding stage.

t_{gr_off} : Gross offered thickness, in mm, as defined in [1.2.2].

t_{gr_req} : Gross required thickness, in mm, as defined in [1.2.1].

t_off : Net offered thickness, in mm, as defined in [1.2.3].

t_dm : Design production margin, in mm, taken as the thickness difference between offered gross thickness and required gross thickness (equal also to the difference between offered net and required net thickness) as a result of scantlings applied by the designer or builder to suit design or production situation. This difference in thickness is not to be considered as an additional corrosion margin.

t_req : Net required thickness, in mm, as required in [1.3.1].

t_{vol_add} : Thickness for voluntary addition, in mm, taken as the thickness voluntarily added as the owner’s extra margin or builder’s extra margin for corrosion wastage in addition to t_c.

t_res : Reserve thickness, in mm, taken equal to 0.5 mm.

t_c1, t_c2 : Corrosion addition on one side of the considered structural member, in mm, as defined in Ch 3, Sec 3, Table 1.