Deck Strength Calculation Report

PT. MARINE CAD CAM Indonesia MARINEDESIGNCONSULTANT Kawasan Industri Sekupang Kav No. 3 Batam - Indonesia 29400

Project No.

:

D - 335

Pages

:

8

Date Revision

:

14-Jul-16 P1

:

DECK STRENGTH CALCULATION REPORT

CB200-06 (1 VESSEL) 180 M

Calculated by

Approved by

JAMHARI HIDAYAT BIN MUSTOFA

ONGKO ANGGUN PRADEWO, S.T.

STUDENT INTERNSHIP PROGRAM INSTITUTE TEKNOLOGI SEPULUH NOPEMBER - SURABAYA 2016

HULL SCANTLING CALCULATION Decks Owner Project Designer Vessel Name Ship

: : : :

ASL MARINE PTE LTD MARINE CADCAM PTE LTD CB200-06 180' x 60' x 12' BARGE HULL NO. H-1119

PRINCIPAL DIMENSIONS Length Overall Breadth Overall Depth Overall Deck Loading Longitudinal Stiffene Transverse Girder Displacement

L B h P

= = = = s1 = s2 = ∆ =

Classification

180 60 12

feet feet feet

ton/m2 572 mm 1524 mm 1004.57 ton = ABS Steel Barges 2015 15

54.86 18.288 3.657 147090 0.572 1.524

SEA WATER DENSITY Sea Water Density Temperature No. 1 2 3 4 5 6

= =

1.025 15

kg/m3 o C

CALCULATE AND DETERMINE Minimum thickness of plate deck Minimum thickness of plate bottom Minimum thickness of plate side shell Minimum length of longitudinal girder Minimum length of transverse girder Minimum length of stiffener

Student Internship Program PT. Marine Cadcam Indonesia

Calculated by Jamhari Hidayat B.M.

meters meters meters N/m2 meters meters

HULL SCANTLING CALCULATION Decks SOLUTION

No.

DECK PLATING THICKNESS a. Strength Deck with Longitudinal Beams and Transverse Beams Based on 3-2-3/1.1.2(a) and 3-2-3/1.1.2(b), each strength deck plating is to be have thickness not less than obtained from the following equation: Longitudinal Beams (Stiffener) t = = =

0.009s + 2.4 0.009(572) + 2.4 7.548

mm mm mm

, for s ≤ 760 mm

mm

, for L ≤ 183 m

and t = = = =

s(L + 48.76) 26L + 8681 572(54.86 + 48.76) 26(54.86) + 8681 59270.64 10107.36 5.864106948

mm mm mm

So, the minimum thickness as rule requirement: Transverse Beams (Girder) t = = =

0.006s + 4.7 0.006(1524) + 4.7 13.844

7.548 mm mm mm mm

, for s ≥ 760 mm

mm

, for L ≤ 183 m

and t = = = =

s(L + 48.76) 26L + 8681 1524(54.86 + 48.76) 26(54.86) + 8681 157916.88 10107.36 15.62394928

mm

mm mm

So, the minimum thickness as rule requirement :

15.624 mm

b. Thickness of Exposed Strength Decks within Line of Openings, Forecastle Decks in Barges of 122 m in Length or Less Based on 3-2-3/1.1.3, each exposed strength deck plating is to be have thickness not less than obtained from the following equation: 0.01s + 0.9 t = 0.01(572) + 0.9 = 6.62 = So, the minimum thickness as rule requirement :

Student Internship Program PT. Marine Cadcam Indonesia

Calculated by Jamhari Hidayat B.M.

, for s ≤ 760 mm

mm mm mm 6.62 mm

HULL SCANTLING CALCULATION Decks c. Thickness of Platform Decks in Enclosed Cargo Spaces Based on 3-2-3/1.1.4, each platform decks plating is to be have thickness not less than obtained from the following equation: 0.00395s√h + 1.5 t = = 0.00395(572)(√20.804) + 1.5 11.80554874 = So, the minimum thickness as rule requirement :

, for t ≥ 5.0 mm

mm mm mm 11.8 mm

e. Deck Playing at Ends Based on 3-2-3/1.7, the thickness of plating forward or aft of 0.1L from the ends is not to be less than 0.01 mm for each milimeter of frame spacing (0.01 in for each inch of frame spacing). In way deck cargo, the requirements 3-2-3/1.5 also apply. Exposed freeboard deck plating forward of 0.05L from the forward perpendicular is also not to be less in thickness than given by following equation: 0.03L + 0.0036s + 2.8 t = 0.03(54.86) + 0.0036(572) +2.8 = 6.505 = So, the minimum thickness as rule requirement :

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mm mm mm 6.505 mm

HULL SCANTLING CALCULATION Section Modulus of Hull Structures CONCLUSION: NOT PASSED YET i. Section Modulus of Hull Girder at Amidships Based on 3-2-1/3.1, the required section modulus SMR amidships, to the deck and bottom is to be obtained from following equation: SMR =

K SMb

cm2-m

where K C1

C2 Cb

0.629 + MS/(fp SMb) ≥ 1.0 = = 1 2 = 16.33(L/100) - 15.47(L/100) + 7.77 = 16.33(54.86/100)2 - 15.47(54.86/100) + 7.77 , 45 ≤ L ≤ 95 m = 4.197866807 = 0.01 ∆ = 1.025 x L x B x h 1004.57 = 1.025 x 54.86 x 18.288 x 3.657 =

So,

SMb = = = = = SMR = = = =

0.267121818 2

C1C2L B(Cb + 0.7) (4.2)(0.01)(54.862)(18.3)(0.27 + 0.7) 2234.537542 223453.7542 K SMb

cm2-m

(1)(223453.7542) 223453.7542 223453754

cm2-m cm3 mm3

So, the minimum section modulus is 223,453,754.20 mm 3

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cm2-m 2 cm -m 3 cm

HULL SCANTLING CALCULATION Section Modulus of Hull Structures CONCLUSION: PASSED ii. Section Modulus of Deck Longitudinals Based on 3-2-5/3.1.1, the required section modulus for each deck longitudinal, in association with the plating to which it is attached, is not to be less than that obtained from the following equations: SM = 7.8chsℓ2

cm3

where c h

ℓ

1.0 0.02L + 0.76 0.02(54.86) + 0.76 1.8572 6.096

meters meters meters meters

7.8chsℓ2 7.8(1)(1.8572)(0.572)(6.0962) 307.9209395 307920.94

cm3 3 cm cm3 mm3

= = = = =

So, SM = = = =

So, the minimum sections modulus for deck longitudinal as rule requirement is 307,920.94 mm 3 Section Modulus of Deck Longitudinals with Deck Plating 8 mm

Sec. Modulus Ix c

= =

SM = = =

221262165 290.4092 Ix c 221262165 290.4092 761897.92

mm4 mm

mm

3

mm3

---------------- REGIONS ---------------Area: 8856.0000 Perimeter: 2180.0000 Bounding box: X: -284.0668 -- 287.9332 Y: -290.4092 -- 127.5908 Centroid: X: 0.0000 Y: 0.0000 Moments of inertia: X: 221262165.0081 Y: 125868376.4264 Product of inertia: XY: -2262205.7453 Radii of gyration: X: 158.0647 Y: 119.2174 Principal moments and X-Y directions about centroid: I: 221315781.7075 along [0.9997 -0.0237] J: 125814759.7270 along [0.0237 0.9997]

mm3

The minimum section modulus for longitudinal girders of strength decks was 307,920.94 mm 3 , which is lower than 761,897.92 mm 3

Student Internship Program PT. Marine Cadcam Indonesia

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HULL SCANTLING CALCULATION Section Modulus of Hull Structures CONCLUSION: PASSED iii. Section Modulus of Longitudinal Stiffeners Based on 3-2-5/3.1.1, the required section modulus for longitudinals stiffeners of strength decks and effective lower decks, is not to be less than that obtained from the following equations: SM = 7.8chsℓ2

cm3

where c h

ℓ

1.0 0.02L + 0.76 0.02(54.86) + 0.76 1.8572 0.572

meters meters meters meters

7.8chsℓ2 7.8(1)(1.8572)(0.572)(0.5722) 2.71107395 2711.07

cm3 3 cm cm3 mm3

= = = = =

So, SM = = = =

So, the minimum sections modulus for longitudinal stiffener of strength decks and effective lower decks as rule requirement: 2,711.07 mm 3 Section Modulus of Stiffeners with Deck Plating 8 mm

Sec. Modulus Ix c

= =

SM = = =

mm4 mm

2808861.789 69.8098 Ix c 2808861.789 69.8098

mm

3

mm3

---------------- REGIONS ---------------Area: 5521.2794 Perimeter: 1389.9655 Bounding box: X: -288.2066 -- 283.7934 Y: -69.8098 -- 13.1902 Centroid: X: 0.0000 Y: 0.0000 Moments of inertia: X: 2808861.7888 Y: 125082004.2985 Product of inertia: XY: 721051.2755 Radii of gyration: X: 22.5551 Y: 150.5142 Principal moments and X-Y directions about centroid: I: 2804609.8586 along [1.0000 -0.0059] J: 125086256.2286 along [0.0059 1.0000]

mm3

40235.92374

The minimum section modulus of for longitudinal stiffeners of strength decks was 2711.07 3

mm , which is lower than 40,235.95 mm

Student Internship Program PT. Marine Cadcam Indonesia

3

Calculated by Jamhari Hidayat B.M.

HULL SCANTLING CALCULATION Section Modulus of Hull Structures CONCLUSION: PASSED iv. Section Modulus of Transverse Girder Based on 3-2-5/3.3, the required section modulus for each deck transverses, in association with the plating to which it is attached, is not to be less than that obtained from the following equations: SM = 4.74chsℓ2

cm3

where c h

ℓ

1.0 0.02L + 0.76 0.02(54.86) + 0.76 1.8572 1.524

meters meters meters meters

7.8chsℓ2 7.8(1)(1.8572)(1.524)(1.5242) 51.2752963 51275.30

cm3 3 cm cm3 mm3

= = = = =

So, SM = = = =

So, the minimum sections modulus for transverse girder of strength decks and effective lower decks as rule requirement: 51,275.30 mm 3 Effective Width of Plating The effective width of plating em of frames and girders may be determined according to Table 3.1 (BV Chapter 8.3D/2.1) considering the type of loading. with Deck Plating 16 mm ℓ = 1524 e = 1000 ℓ/e = 1.524 from table ℓ/e 1 em1/e 0.36

mm mm

2 0.64

Interpolation 0.52 x

=

2-1 0.64 - 0.36

x = 0.14672 em1/e = 0.36 + 0.147 = 0.50672 em1 = 0.50672e = 506.72

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mm mm

Calculated by Jamhari Hidayat B.M.

HULL SCANTLING CALCULATION Section Modulus of Hull Structures Sec. Modulus Ix c

= =

SM = = =

202831172 234.219 Ix c 202831172 234.219 865989.40

4

mm mm

mm3 mm3 mm3

---------------- REGIONS ---------------Area: 13800.8000 Perimeter: 1847.4400 Bounding box: X: -256.7102 -- 250.0098 Y: -234.2190 -- 97.7810 Centroid: X: 0.0000 Y: 0.0000 Moments of inertia: X: 202831171.9556 Y: 164326015.9461 Product of inertia: XY: 5086790.0237 Radii of gyration: X: 121.2314 Y: 109.1192 Principal moments and X-Y directions about centroid: I: 203491835.5899 along [0.9917 0.1288] J: 163665352.3119 along [-0.1288 0.9917]

The minimum section modulus of for longitudinal stiffeners of strength decks was 51,275.30 mm 3 , which is lower than 865,989.4 mm 3

Student Internship Program PT. Marine Cadcam Indonesia

Calculated by Jamhari Hidayat B.M.

HULL SCANTLING CALCULATION Section Modulus of Hull Structures

Student Internship Program PT. Marine Cadcam Indonesia

Calculated by Jamhari Hidayat B.M.