4 Allowable hold loading
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Statutory Documents - IMO Publications and Documents - International Conferences - SOLAS/CONF.4 - Resolutions of the Conference of Contracting Governments to the International Convention for the Safety of Life at Sea, 1974 – (November 1997) - Resolution 4 - Standards for the evaluation of scantlings and for the evaluation of allowable hold loading of the foremost cargo hold – (Adopted on 27 November 1997) - Annex 2 - Standards for the evaluation of allowable hold loading of the foremost cargo hold - 4 Allowable hold loading

4 Allowable hold loading

 The allowable hold loading W, in tonnes, is given by:

where:
F = 1.05 in general
= 1.00 for steel mill products
ρ c = cargo density, in t/m3; for bulk cargoes, see 2.1; for steel products, ρ cis to be taken as the density of steel
V = volume, in m3, occupied by cargo at a level h 1
h 1 =
X = for bulk cargoes, the lesser of X 1 and X 2 given by
=
=
X = for steel products, X may be taken as X 1, using perm = 0
ρ = seawater density, in t/m3
g = 9.81 m/s2, gravity acceleration
E =
d f,D = as given in 2.2
h f = flooding head, in m, as defined in 2.2
perm = permeability of cargo, to be taken as 0.3 for ore (corresponding bulk cargo density for iron ore may generally be taken as 3.0 t/m3)
Z = the lesser of Z 1 and Z 2 given by:
=
=
C h = shear capacity of the double bottom, in kN, as defined in section 3, considering, for each floor, the lesser of the shear strengths S f1 and S f2 (see 3.1) and, for each girder, the lesser of the shear strengths S g1 and S g2 (see 3.2)
C c = shear capacity of the double bottom, in kN, as defined in section 3, considering, for each floor, the shear strength S f1 (see 3.1) and, for each girder, the lesser of the shear strengths S g1 and S g2 (see 3.2)
A DB,h =
A DB,e =
n = number of floors between stools (or transverse bulkheads, if no stool is fitted)
S i = space of ith floor, in m
B DB,i = B DB - s for floors whose shear strength is given by S f1 (see 3.1)
B DB,i = B DB,h for floors whose shear strength is given by S f2 (see 3.1)
B DB = breadth of double bottom, in m, between hoppers (see figure 3)
B DB,h = distance, in m, between the two considered openings (see figure 3)
s = spacing, in m, of double-bottom longitudinals adjacent to hoppers.

Figure 1

Figure 2

Figure 3

Parent topic: Annex 2 - Standards for the evaluation of allowable hold loading of the foremost cargo hold
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