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Wind Area and Forces For Beam Wind: Item Description CH Cs Projected Area (SQ.M) Pressure (N/SQ.M)

The document contains wind force calculations for different orientations of a beam structure. It lists 17 items projected areas and calculates the wind pressure and force on each area for head wind, stern wind, and beam wind conditions. The maximum total environmental force is calculated to be 307.52 metric tons. Rope capacity calculations are provided for the head, stern, and beam wind conditions.

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Amit Kumar
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592 views10 pages

Wind Area and Forces For Beam Wind: Item Description CH Cs Projected Area (SQ.M) Pressure (N/SQ.M)

The document contains wind force calculations for different orientations of a beam structure. It lists 17 items projected areas and calculates the wind pressure and force on each area for head wind, stern wind, and beam wind conditions. The maximum total environmental force is calculated to be 307.52 metric tons. Rope capacity calculations are provided for the head, stern, and beam wind conditions.

Uploaded by

Amit Kumar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLSX, PDF, TXT or read online on Scribd
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Wind area and Forces for Beam wind

Wind Speed 50.00 Kn or 25.72

Projected Pressure
Item Description Ch Cs
Area (sq.m) (N/sq.m)

1 Hull 628.00 1.00 1.00 404.19


2 Leg (Fwd stbd) 1396.00 1.18 0.32 152.62
3 Leg (Fwd port) 1396.00 1.18 0.32 152.62
4 Leg (Aft stbd) 1396.00 1.18 0.32 152.62
5 Leg (Aft port) 1396.00 1.18 0.32 152.62
6 Jack house (Fwd stbd) 148.00 1.00 1.00 404.19
7 Jack house (Fwd port) 148.00 1.00 1.00 404.19
8 Jack house (Aft stbd) 148.00 1.00 1.00 404.19
9 Jack house (Aft port) 148.00 1.00 1.00 404.19
10 Crane foundation 128.00 1.00 1.00 404.19
11 Crane boom 98.00 1.00 1.50 606.28
12 Connecting bridge 64.26 1.00 1.50 606.28
13 ALQ 625.00 1.00 1.00 404.19
14 Office modules 413.00 1.00 1.00 404.19
15 Fwd LQ 360.00 1.00 1.10 444.61
16 Crane 2 123.58 1.00 1.50 606.28
17
Total 8615.84

In MT
m/s

Force(N)

253829.90
213059.32
213059.32
213059.32
213059.32
59819.79
59819.79
59819.79
59819.79
51736.03
59415.60
38959.66
252617.34
166929.54
160058.35
74924.28

2149987.13

219.16
Wind area and Forces for Head and Stern wind

Wind Speed 50.00 Kn or 25.72

Projected Pressure
Item Description Ch Cs
Area (sq.m) (N/sq.m)

1 Hull 400.00 1.00 1.00 404.19


2 Leg (Fwd stbd) 1396.00 1.18 0.32 152.62
3 Leg (Fwd port) 1396.00 1.18 0.32 152.62
4 Leg (Aft stbd) 1396.00 1.18 0.32 152.62
5 Leg (Aft port) 1396.00 1.18 0.32 152.62
6 Jack house (Fwd stbd) 148.00 1.00 1.00 404.19
7 Jack house (Fwd port) 148.00 1.00 1.00 404.19
8 Jack house (Aft stbd) 148.00 1.00 1.00 404.19
9 Jack house (Aft port) 148.00 1.00 1.00 404.19
10 Crane foundation 128.00 1.00 1.00 404.19
11 Crane boom 58.80 1.00 1.50 606.28
12 Connecting bridge 129.25 1.00 1.50 606.28
13 ALQ 624.29 1.00 1.00 404.19
14 Office modules 200.83 1.00 1.00 404.19
15 Fwd LQ 1100.00 1.00 1.00 404.19
16 Crane 2 123.58 1.00 1.50 606.28
17
Total 8940.75

In MT
m/s

Force(N)

161675.10
213059.32
213059.32
213059.32
213059.32
59819.79
59819.79
59819.79
59819.79
51736.03
35649.36
78362.09
252330.37
81173.83
444606.52
74924.28

2271974.01

231.60
Current force

Current 0.70 Kn or 0.36

Wetted
Item Description surface Ccy Vc
area(m2)
1 Hull 5500.00 72.37 0.36

Total 5500.00

In MT
m/s

Force(N)

51608.27

51608.27

5.26
HAVEN Mooring Calculations @ Oblique Angle w.r.t Rig CL

API RP 2SK - C5 Oblique Environment


F = [Fx ((2*Cos*Cos)/(1+Cos*Cos))]+[Fy ((2*Sin*Sin)/(1+Sin*Sin))]
Fx = 236.86 MT Bow Force
Fy = 224.42 MT Beam Force
= Deg./rad Angle
F = MT Resultant Force

Fx Fy Angle(deg) Angle(rad) Resultant

0 0.00 236.86

45 0.79 307.52
60 1.05 287.11
90 1.57 224.42
135 2.36 307.52
236.86 224.42 150 2.62 292.79
180 3.14 236.86
225 3.93 307.52
240 4.19 287.11
270 4.71 224.42
315 5.50 307.52
330 5.76 292.79
360 6.28 236.86
Max. Total Environmental Force 307.52 MT
Case 1- Capacity of Ropes for head wind
Max. Rope
Active Tied Bollard Available Rope
SWL (MT) Angle(deg.) Angle(rad.) Cosine Contribution(M
Rope Capacity(MT) Capacity(MT)
T)
R1 208.00 43.00 0.75 0.73 152.12 250.00 152.12
R2 170.50 34.00 0.59 0.83 141.35 200.00 141.35
R3 208.00 14.00 0.24 0.97 201.82 100.00 100.00
R4 208.00 8.00 0.14 0.99 205.98 100.00 100.00
R5 0.00 8.00 0.14 0.99 0.00 100.00 0.00
R6 0.00 18.00 0.31 0.95 0.00 100.00 0.00
R7 0.00 48.00 0.84 0.67 0.00 200.00 0.00
R8 0.00 70.00 1.22 0.34 0.00 250.00 0.00
Total 493.47
Case 2- Capacity of Ropes for aft wind
Max. Rope
Active Tied Bollard Available Rope
SWL (MT) Angle(deg.) Angle(rad.) Cosine Contribution(
Rope Capacity(MT) Capacity(MT)
MT)
R1 0.00 43.00 0.75 0.73 0.00 250.00 0.00
R2 0.00 34.00 0.59 0.83 0.00 200.00 0.00
R3 0.00 14.00 0.24 0.97 0.00 100.00 0.00
R4 0.00 8.00 0.14 0.99 0.00 100.00 0.00
R5 208.00 8.00 0.14 0.99 205.98 100.00 100.00
R6 208.00 18.00 0.31 0.95 197.82 100.00 100.00
R7 170.50 48.00 0.84 0.67 114.09 200.00 114.09
R8 170.50 70.00 1.22 0.34 58.31 250.00 58.31

Total 372.40

Case3- Capacity of Ropes for beam wind

Max. Rope
Active Tied Bollard Available Rope
SWL (MT) Angle(deg.) Angle(rad.) sine Contribution(
Rope Capacity(MT) Capacity(MT)
MT)

R1 208.00 43.00 0.75 0.68 141.86 250.00 141.86


R2 170.50 34.00 0.59 0.56 95.34 200.00 95.34
R3 208.00 14.00 0.24 0.24 50.32 100.00 50.32
R4 208.00 8.00 0.14 0.14 28.95 100.00 28.95
R5 208.00 8.00 0.14 0.14 28.95 100.00 28.95
R6 208.00 18.00 0.31 0.31 64.28 100.00 64.28
R7 170.50 48.00 0.84 0.74 126.71 200.00 126.71
R8 170.50 70.00 1.22 0.94 160.22 250.00 160.22

Total 696.61

Case4- Capacity of Ropes for wind at 315 degrees


Angle with Max. Rope
Active Tied Bollard Available Rope
SWL (MT) 315 deg Angle(rad.) Cosine Contribution(
Rope Capacity(MT) Capacity(MT)
plane (deg.) MT)
R1 208.00 2.00 0.03 1.00 207.87 250.00 207.87
R2 170.50 11.00 0.19 0.98 167.37 200.00 167.37
R3 208.00 31.00 0.54 0.86 178.29 100.00 100.00
R4 208.00 37.00 0.65 0.80 166.12 100.00 100.00
R5 0.00 37.00 0.65 0.80 0.00 100.00 0.00
R6 0.00 8.00 0.14 0.99 0.00 100.00 0.00
R7 0.00 18.00 0.31 0.95 0.00 200.00 0.00
R8 0.00 48.00 0.84 0.67 0.00 250.00 0.00
Total 575.24

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