• Author / Uploaded
• Alvin Smith

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Page1 of 20

PROCEDURE OF WRC-107 CALCULATIONS FOR LIFTING LUGS (Horizontal vessels) F

Sketch Lifting Lugs

Step 1

Note values from output file of PVElite, as shown below.

Import data from PV elite

Step 2

Open PVElite Input file

Step 3

In PV Elite, Click this button --> (To start design of lifting lug)

Step 4

A new window "COADE As Shown Below:

CALC" will open, Go to Step 4

Filename:197701138.xls.ms_office

Page2 of 20

Step 5

Go to 'Analysis'→'Choose As shown below in sketch

Analysis type'→'WRC 107 / FEA'

Step 6

A new window will open. Click

Step 7

Give Description of item, select attachment type as "Rectangular" & select "solid" in

" +" new Item button

Hollow or Solid box

Filename:197701138.xls.ms_office

Page3 of 20

Step 8

Also give dimensions of rectangular attachment by clicking ">>" button window. If there is any pad attached also give its dimension.

Step 9

In Vessel provide data for Vessel (from data sheet or Pv elite calculations) on which lifting lug is attached.

Filename:197701138.xls.ms_office

Page4 of 20

Step 10 A

Provide values in input cells in table 1 & take value of weight from step 1

Input Cell Output Cells

Weight of Empty Vessel Impact Factor (generally 1.5) Design Lifting Load (Total)

Table 1

WxI

No. of Lifting Lugs Thickness of lifting lug Length of lifting lug from centre of hole to centre of weld line Thickness of pad Half of the circumferential angle between Lugs.

W I F n T d Tp ө

=

5000 N

=

18

=

90000 N

=

2

=

10 mm

=

100 mm

=

10 mm

=

30 deg.

Load per Lug

F/n

=

45000 N

Radial Load,

P

=FxI/n

=

45000 N

Circumferential Shear,

VC = F (tan ө) / n

=

25981 N

Longitudinal Shear,

VL = 0.05 (F/n)

=

2250 N

Longitudinal Moment,

ML = P x d + VL (Tp + T/2)

=

4533750 N-mm

Torsional Moment,

MT = VC x d

=

2598074 N-mm

Circumferential Moment,

MC = VC (Tp + T/2)

=

389711 N-mm

Filename:197701138.xls.ms_office

Page5 of 20

Step 10 B

In Loads

provide values from Step10A.

Step 11

Save your file at required location.

Step 12

Analyze

Step 13

Read at end of Report (as below)

Step 14

If the results are " Fail", go to Step Unless you get "Passed" message

8 & try with different geometrical dimensions.

Filename:197701138.xls.ms_office

Page 6 of 20

PROCEDURE OF WRC-107 CALCULATIONS FOR LIFTING LUGS (Horizontal vessels) Sketch

Step 1

Note values from output file of PVElite, as shown below.

Import data from PV elite

Step 2

Open PVElite Input file

Step 3

In PV Elite, Click this button --> (To start design of lifting lug)

Step 4

A new window "COADE As Shown Below:

CALC" will open, Go to Step 4

File name:197701138.xls.ms_office

Page 7 of 20

Step 5

Go to 'Analysis'→'Choose As shown below in sketch

Analysis type'→'WRC 107 / FEA'

Step 6

A new window will open. Click

Step 7

Give Description of item, select attachment type as "Rectangular" & select "solid" in

" +" new Item button

Hollow or Solid box

File name:197701138.xls.ms_office

Page 8 of 20

Step 8

Also give dimensions of rectangular attachment by clicking ">>" button window. If there is any pad attached also give its dimension.

Step 9

In Vessel provide data for Vessel (from data sheet or Pv elite calculations) on which lifting lug is attached.

File name:197701138.xls.ms_office

Page 9 of 20

Step 10 A

Provide values in input cells in table 1 & take value of weight from step 1

Input Cell Output Cells

Weight of Empty Vessel Impact Factor (generally 1.5) Design Lifting Load (Total)

Table 1

No. of Lifting Lugs Thickness of lifting lug Length of lifting lug from centre of hole to bottom. Thickness of pad Half of the circumferential angle between Lugs.

WxI

W I F n T d Tp ө

=

5000 N

=

1.5

=

7500 N

=

2

=

10 mm

=

55 mm

=

10 mm

=

30 deg.

File name:197701138.xls.ms_office

Page 10 of 20

Step 10 B

In Loads

provide values from Step10A.

Step 11

Save your file at required location.

Step 12

Analyze

Step 13

Read at end of Report (as below)

Step 14

If the results are " Fail", go to Step Unless you get "Passed" message

8 & try with different geometrical dimensions.

File name:197701138.xls.ms_office

Page[Page] of 20

PROCEDURE OF WRC-107 CALCULATIONS FOR LIFTING LUGS (Vertical vessel) Vertical lift VL VL= Longitudinal Shear VC= Circumferential Shear

Step 1

Note values from output file of PVElite, as shown below.

Import data from PV elite

Step 2

Open PVElite

Step 3

In PV Elite, Click this button --> (To start design of lifting lug)

Step 4

A new window "COADE CALC" will open, Go to Step 4 As Shown Below:

File name:197701138.xls.ms_office

Page[Page] of 20

Step 5

Go to 'Analysis'→'Choose Analysis type'→'WRC 107 / FEA' As shown below in sketch

Step 6

A new window will open. Click " +" new Item button

Step 7

Give Description of item, select attachment type as " Rectangular" & select "solid" in

Hollow or Solid box

File name:197701138.xls.ms_office

Page[Page] of 20

Step 8

Also give dimensions of rectangular attachment by clicking " >>" button in Rectangular attachment window. If there is any pad attached also give its dimension.

Step 9

In Vessel provide data for Vessel from Datasheet or output PVElite file.

File name:197701138.xls.ms_office

Page[Page] of 20

Step 10 A

Provide values in input cells in table 1 & take value of weight from step 1

Input Cell Output Cells

Weight of Empty Vessel Impact Factor (generally 1.5) Design Lifting Load (Total)

Table 1

WxI

No. of Lifting Lugs Thickness of lifting lug Length of lifting lug from centre of hole to center of weld line Thickness of pad Half of the circumferential angle between Lugs. Load per Lug

W I F n T d Tp ө

=

54000 N

= =

1.5 81000 N

=

2

=

10 mm

= =

55 mm 10 mm

=

30 deg.

F/n

=

40500 N

Radial Load,

P = 0.05 x F / n

=

2025 N

Longitudinal Shear,

VL = F / n

=

40500 N

Circumferential Shear ,

VC = 0.05 x F / n

=

2025 N

IN VERTICAL LIFTING

Step 10 B

MOMENT CALCUALTIONS (In Vertical Lifting) Longitudinal Moment, ML = Pd + VL (Tp + T/2)

=

751275 N-mm

Circumferential Moment,

MC = VC (Tp + T/2)

=

30375 N-mm

Torsional Moment,

MT = VC d

111375 N-mm

In Load provide values from Step 10A.

File name:197701138.xls.ms_office

Page[Page] of 20

Step 11

Save your file at required location.

Step 12

Analyze

Step 13

Read at end of Report (as below)

Step 14

If the results are Fail. Go to Step 8 & try again with different geometrical dimensions. Unless you get "Passed" message

File name:197701138.xls.ms_office

Page 16 of 20

PROCEDURE OF WRC-107 CALCULATIONS FOR LIFTING LUGS (Vertical vessel) Horizontal lift VC= Circumferential Shear

Step 1

Note values from output file of PVElite, as shown below.

Import data from PV elite

Step 2

Open PVElite

Step 3

In PV Elite, Click this button --> (To start design of lifting lug)

Step 4

A new window "COADE CALC" will open, Go to Step 4 As Shown Below:

File name:197701138.xls.ms_office

Page 17 of 20

Step 5

Go to 'Analysis'→'Choose Analysis type'→'WRC 107 / FEA' As shown below in sketch

Step 6

A new window will open. Click " +" new Item button

Step 7

Give Description of item, select attachment type as " Rectangular" & select "solid" in

Hollow or Solid box

File name:197701138.xls.ms_office

Page 18 of 20

Step 8

Also give dimensions of rectangular attachment by clicking " >>" button infront of Attachment type box window. If there is any pad attached also give its dimension.

Step 9

In Vessel provide data for Vessel from Datasheet or PVElite output file.

File name:197701138.xls.ms_office

Page 19 of 20

Step 10 A

Provide values in input cells in table 1 & take value of weight from step 1

Input Cell Output Cells

Weight of Empty Vessel Impact Factor (generally 1.5) Design Lifting Load (Total)

Table 1

WxI

No. of Lifting Lugs Thickness of lifting lug Length of lifting lug from centre of hole to center of weld line Thickness of pad Half of the circumferential angle between Lugs. Load per Lug

W I F n T d Tp ө

=

54000 N

= =

1.5 81000 N

=

2

=

10 mm

= =

55 mm 10 mm

=

30 deg.

F/n

=

40500 N

Radial Load,

P = 0.05 x F / n

=

2025 N

Longitudinal Shear,

VL = 0.05 x F / n

=

2025 N

Circumferential Shear,

VC = F / n

=

40500 N

IN HORIZONTAL LIFTING

Step 10 B

MOMENT CALCULATIONS (In Horizontal Lifting) Longitudinal Moment, ML = Pd + VL (Tp + T/2)

=

Circumferential Moment,

MC = VC (Tp + T/2)

=

607500 N-mm

Torsional Moment,

MT = VC d

=

2227500 N-mm

141750 N-mm

In Load provide values from Step 10A.

File name:197701138.xls.ms_office

Page 20 of 20

Step 11

Save your file at required location.

Step 12

Analyze

Step 13

Read at end of Report (as below)

Step 14

If Results are Fail go to Step 8 and try again with different geometric specifications. Unless you get "Passed" message

File name:197701138.xls.ms_office