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A Fast Offshore Cruiser - Appendices.
A.2. - Hull frames/floors/bulkheads etc.
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Bulkhead calculations.


Bulkhead thickness calculations by ABS cold moulded rule.

Bulkhead

h (m)

s (m)

F

k

C

s a N/mm2

t (mm)

A

1.85

0.9

1.10164

0.5

1

40

14.36

B

2.03

0.6

1.10176

0.5

1

40

10.03

C

2.35

0.6

1.10176

0.5

1

40

10.79

D

2.39

0.6

1.10176

0.5

1

40

10.89

E

1.52

0.6

1.10176

0.5

1

40

8.68

F

1.52

0.6

1.10176

0.5

1

40

8.68

G

3.96

0.6

1.10176

0.5

1

40

14.01

Bulkhead stiffener calculations.

Bulkhead

C

h (m)

s (m)

l (m)

s a (N/mm2)

SM (cm3)

A

619

1.85

0.9

1.59

36.12

72.14

B

619

2.03

0.6

1.59

36.12

52.77

C

619

2.35

0.6

1.97

36.12

93.78

D

619

2.39

0.6

1.99

36.12

97.32

E

619

1.52

0.6

1.21

36.12

22.88

F

619

1.52

0.6

1.09

36.12

18.57

G

619

3.96

0.6

1.33

36.12

71.49

Bulkhead stiffener dimensions.

Stiffener ‘b’

37.5mm

Stiffener ‘d’

75mm

Plate ‘t’

12mm

Plate ‘b’

300mm

SM

150cm3

Material

Douglas fir

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