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Midship Section Modulus

The document contains calculations for bending moment and modulus of an LCT container vessel under various loading conditions including full load, ballast, and lightship. It provides values for parameters, formulas, and results of the calculations including section modulus, bending moment, and conclusions on whether the vessel passes requirements.
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0% found this document useful (0 votes)
114 views2 pages

Midship Section Modulus

The document contains calculations for bending moment and modulus of an LCT container vessel under various loading conditions including full load, ballast, and lightship. It provides values for parameters, formulas, and results of the calculations including section modulus, bending moment, and conclusions on whether the vessel passes requirements.
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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TABLE OF BENDING MOMENT & MODULUS CALCULATION

Ballast Ballast Ballast


Full Load Full Load on Full Load
NO Item BKI Formula/Simbol Units Condition Condition Condition on Lightship
Departure Navigation Arrival
Departure Arrival Navigation
1 2 3 4 5 6 7 8 9 10 11 12

LCT CONTAINER
1 Length of Vessel 1.H.2.1 L m 86.186 86.186 86.186 86.186 86.186 86.186 86.186
2 Breadth of Vessel 1.H.2.6 B m 18.288 18.288 18.288 18.288 18.288 18.288 18.288
3 Draft at Summer Load Line 1.H.2.8 T m 3.489 3.489 3.489 3.489 3.489 3.489 3.489
4 Block Coefficient 1.H.4 CB 0.818 0.818 0.818 0.818 0.818 0.818 0.818
5 Service Range Coefficient 4.A.2.2 cRW 1.000 1.000 1.000 1.000 1.000 1.000 1.000
6 Wave Coefficient 4.A.2.2 co 7.547 7.547 7.547 7.547 7.547 7.547 7.547
7 Hogging Condition 5.B.3.1 c1H 0.155 0.155 0.155 0.155 0.155 0.155 0.155
8 Sagging Condition 5.B.3.1 c1S 0.167 0.167 0.167 0.167 0.167 0.167 0.167
9 m 5.B.3.2 m 0.931 0.931 0.931 0.931 0.931 0.931 0.931
10 Length Coefficient 4.A.2.2 cL 0.979 0.979 0.979 0.979 0.979 0.979 0.979
Distance Between aft end of length L and
5.B.5 x m 43.093 43.093 43.093 43.093 43.093 43.093 43.093
11 the position of considered
12 Distribution Factor 5.B.3.1 cM 1.000 1.000 1.000 1.000 1.000 1.000 1.000
13 5.C.1.1 fr 1.000 1.000 1.000 1.000 1.000 1.000 1.000
14 Permisible Coefficient 5.C.1.1 cs 1.000 1.000 1.000 1.000 1.000 1.000 1.000
15 Material Factor 2.B.1.2 k (Normal Strength Hull Steel) 1.000 1.000 1.000 1.000 1.000 1.000 1.000
16 5.C.1.1 σp0 175.000 175.000 175.000 175.000 175.000 175.000 175.000
2
17 Permisible Longitudinal bending Stress 5.C.1.1 σp = cs . σp0 N/mm 175.000 175.000 175.000 175.000 175.000 175.000 175.000
18 Service Range Coefficient 5.C.2.1 cRS 0.950 0.950 0.950 0.950 0.950 0.950 0.950
19 Vertical Still Water Bending Moment 5.A.5 MSW kNm -33540.4 -40740.9 -43242.5 -37042.6 -41133.3 -39416.6 -45243.7
2
20 Vertical Wave Bending moment 5.B.3.1 MWV = L . B . c0 . c1 . cL . cM kNm 167533.2 167533.2 167533.2 167533.2 167533.2 167533.2 167533.2
Total Longitudinal Bending moment in sea
5.A.5 MT = MSW + MWV kNm 133992.8 126792.3 124290.7 130490.6 126399.9 128116.6 122289.5
21 way
Section modulus as function of the 3 3
5.C.1.1 W = fr . (M SW + M WV) / σp .10 m 0.766 0.725 0.710 0.746 0.722 0.732 0.699
22 long.Bending Moment
2 -6 3
23 Minimum midship section Modulus 5.C.2.1 Wmin = k.c0.L .B.(CB+0,7).cRS .10 m 1.479 1.479 1.479 1.479 1.479 1.479 1.479
LONG STRENGTH CALCULATION
LONG STRENGTH CALCULATION

SUMMARY SECTION MODULUS


Ballast
Full Load Ballast Ballast
Full Load Full Load Condition
DESCRIPTION on Condition Condition Lightship
Departure Arrival on
Navigation Departure Arrival
Navigation
Minimum Midship Section
3
Modulus (m ) Reference BKI Rules 1.47854555 1.47854555 1.47854555 1.4785456 1.47854555 1.47854555 1.4785456
Section 5.C.2
3
Section Modulus (m )
0.76567323 0.72452729 0.71023271 0.7456608 0.722285 0.732095 0.6987971
Reference BKI Rules Section 5.C.1

3
Section Modulus Actual Deck (m ) 1.97851131 1.97851131 1.97851131 1.9785113 1.97851131 1.97851131 1.9785113
Section Modulus Actual Bottom
3 1.57162988 1.57162988 1.57162988 1.5716299 1.57162988 1.57162988 1.5716299
(m )

RESUME PASS PASS PASS PASS PASS PASS PASS

LCT CONTAINER

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