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Required number of top over lashings to prevent sideways sliding<br />
IMO/ILO/UN ECE<br />
EU Best Practice Guidelines -<br />
Cargo Securing (p.108)<br />
© MariTerm i Höganäs AB<br />
Cargo Securing example 4<br />
Equation (6)<br />
where<br />
m = 2 tons<br />
EN <strong>12195</strong>-1<br />
( cy<br />
cz<br />
µ ) m<br />
g<br />
n <br />
k µ sin<br />
F<br />
g = 9.81 m/s 2<br />
c y = 0.5 g (table 2)<br />
c z = 1.0 g (table 2)<br />
µ d = µ s × 0.7 = 0.28 (section 6.1)<br />
k = 1.5 (section 6.2)<br />
F T = 0.4 ton ≈ 4 kN<br />
α = 70º<br />
<strong>IRU</strong> Academy Safe Loading and Cargo Securing Programme 25<br />
d<br />
Answer<br />
T<br />
<strong>Rev</strong> <strong>prEN</strong> <strong>12195</strong>-1<br />
Equation (10)<br />
( cy<br />
cz<br />
µ ) m<br />
g<br />
n <br />
<br />
2µ<br />
sin<br />
F<br />
where<br />
m = 2 tons<br />
g = 9.81 m/s 2<br />
c y = 0.5 g (table 2)<br />
c z = 1.0 g (table 2)<br />
µ = µ est= 0.46 (Annex B)<br />
α = 70º<br />
F T = 0.4 ton ≈ 4 kN<br />
f s = 1.1<br />
n = 0.6 n = 2.7<br />
n = 0.7<br />
© International Road Transport Union (<strong>IRU</strong>) 2010<br />
T<br />
f<br />
s
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