OffCon Time: 8:44Version 1.001 July 2006 Date: 23.04.21

Identification

Client Project No.

Project Name 0

Max. gross mass kg Length mm

Payload kg Width mm

Tare mass kg Height mm

Sling Leg Angle ° (b)

Checklist: DNV Standard for Certification 2.7-1 Chapter 4

Design details Comment

1. Clean outline, no snagging hazard

2. Continuity of force transmission in primary structure

3. Full penetration welding of primary structure

4. Min. thickness requirements met

5. Material requirements met

6. Padeye design

7. Fork lift pockets: bottom plates/ sufficent shear area side rail

8. Fork lift pockets: Size and location

9. No unacceptable rust traps

10. Doors, hatches and other loose structures secured

11. Doors can be secured in open position

12. Unit able to withstand 30º tilt angle

13. Top protection for open containers

Calculations

14. Four point lift: 2,5xR (Only primary structure included)

15. Two point lift: 1,5xR for open frames (incl. all structure)

16. Fork pocket lift: 1,6xR

17. Frame analysis carried out (computer analysis)

18. Padeye stresses

19. Impact loads

20. Floor plate stress from internal loading: 2,5xP/A

21. Wall stress from internal loading: 0,6xP/A

22. Strength of intermediate deck

23. IMDG Requirements (DG tank containers)

Other Comments:

User Cintra, Cecilia

About OffCon: OffCon is an MS EXCEL based checklist and calculation tool for verification of the design of offshore containers. This program does not include any detailed analysis of the container framework. Detailed frame analysis may be performed using DNV 3-D Beam or other beam calculation programs.

The program is copyright by Det Norske Veritas, and is based on the rule requirements of DNV Standard for Certification 2.7-1 January 2006. The program is available for clients applying for offshore container certification at DNV. Feedback and comments are appreciated: e-mail: MTPNO876@dnv.com.

Asymmetric Sling Set

Design LoadsClient: 0 Time: 8:44Project: 0 Date: 23.04.21

Project No.: 0

Main data for calculationMax. gross mass 0 kgPayload 0 kgTare mass 0 kgSling leg angle 0 °Enhancement factor No factor given - Table 8.1

The required strength of a container is found by performing calculations using the following design loads

4.2.3 Lifting Loads

4.2.3.1 4-point liftingLoad on structure F=(2.5xR)g = 0.0 N Internal load (2.5xR –T)g= 0.0 N

4.6.3.3 2-point liftingLoad on structure F=(1.5xR)g = 0.0 N Internal load (1.5xR –T)g= 0.0 N

4.2.3.2 Lifting with fork truck Load on structure F=(1.6x(R+S))g 0.0 N Internal load (1.6x(R+S –T)g= 0.0 N

Lifting Set Load = S = kg

4.2.4 Impact Loads (static equivalent)

4.2.4.1 Horizontal impact

0.0 N Corner post, external bottom frame

0.0 N Other primary structure

4.2.4.2 Vertical impact

0.0 N Bottom

4.4.7 Internal Loads on Side Wall

4.4.7 Load on walls

0.0 N

4.4.2 Loads on Intermediate Deck

4.4.2 Tween deck load

0.0 N Standard load if deck is at half height. Other loads may apply.

Distributed Loads on Floor

Total length of load-bearing members mm

Distributed Load Total Load4 Point Lift

q=(2.5xR)g/l= #DIV/0! N/mm F=(2.5xR)g= 0.0 N2 Point Lift/ Diagonal Lift

q=(1.5xR)g/l= #DIV/0! N/mm F=(1.5xR)g= 0.0 NFork Pocket Lift

q=1.6x(R+S)g/l= #DIV/0! N/mm F=1.6x(R+S)g= 0.0 NImpact Loads

q=Rxg/l= #DIV/0! N/mm F=Rxg= 0.0 N

FHI=0.25xRxg =

FHI=0.15xRxg =

FVI=0.25xRxg =

FW=0.6xPxg =

FW=0.5xPxψxg =

The following calculated distributed loads are ment to be applied to a model of the unit made using frame analysis software. The length of the load bearing elements in the bottom frame should be entered into the cell below.

Impact LoadsClient: 0 Time: 8:44Project: 0 Date: ###

Project No.: 0

Beam specificationCross section dimensions (for rectangular hollow profile)

ID beam=h = mmb = mmt = mm

,

Cross section propertiesI =

W =

Beam spanL = mm

Yield strength of materialRe = N/mm2

Maximum bending stress and deflections due to simulated impact in middle of span

Corner posts and side rails bottom structure: F = 0,25*R*gLength Deflections (mm)

fixed - fixed fixed-free free-free fixed - fixed fixed-free free-free

00

500

Other frame members of the side structure, including top rails: F = 0,15*R*gLength Deflections (mm)

fixed - fixed fixed - free free-free fixed - fixed fixed - free free-free00

500

Refrence: Section 4.2.4 Impact loadsPlease note! Here beam deflection and stress is calculated using simplified beam theory. If stresses exceed the yield stress of the material or deflections exceeds the calculated maximum, more detailed analysis needs to be performed.

3 simplified cases are calculated. Bot ends fixed, both ends free, and one end fixed and one free. Steel with E-modulus 2.1x10^5 MPa Assumed. Results are given for actual span (yellow cells) and actual span +/- 500 mm (blue cells)

cm4

cm3

Bending stress (N/mm2) Max. Allowable deflection L/250 (mm) *

Bending stress (N/mm2) Max. Allowable deflection L/250 (mm) *

Padeye DesignClient: 0 Time: 8:44Project: 0 Date: 23.04.21

Project No.: 0

Decomposed pad eye forcesSling leg angles b= 0.0 °

Number of pad eyes n = (b)Resulting sling forceRSF b= #VALUE! N

#VALUE! N #VALUE! N

Pad eye strength

Plate Plate w/cheeck pl. Plate w/inserted boss

To enter data click the desired padeye design

DimensionsBolt hole diameter Dh = mmOuter radius H = mmPad eye thickness t = mmTotal thickness tc = mmPipesection dia. Dp = mm

Yield stress of material Re = N/mm2

Calculated stressesTear out stress N/mm2Contact stress, 6% clearence N/mm2 Steel only

Shackle dimensionsMinimum bolt diameter

0.00 mm

Maximum shackle inside width at pin0.00 mm

Check if the pad eye input is suitable to any shackle as listed in EN 13889:2000

WLL (t)

Pad eye dim too largeMatch!

Pad eye dim too small

For DNV Type Approved shackles, please visit our website:

Reference: Section 4.2.3.1 Lifting with lifting set and Appendix D. Design of pad eye.

Fv =Fh =

Dmin = 0,94xDh =

Wmax = tc / 0,75 =

Nominal pin diameter

(mm)

Nominal inside width at pin (mm)

Dee - min. inside length

S (mm)

Bow - min. inside length

S (mm)

Remember that this check only give a preliminary indication if the pad eye is matching the shackle based on pin diameter and pad eye thickness. Always remember to manualy verify that shackle and pad eye geometry match. These calculation only check against Dee and Bow shackles listed in Table 2 in the EN 13889:2000 standard. Other dimensions may be acceptable

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Lifting Set CalculationsClient: 0 Time: 8:44Project: 0 Date: 23.04.21

Project No.: 0

Strength requirements for lifting setsRating 0 kgEnhancement factor x No factor given Table 8.1Working Load Limit = 7.0 t

Number of sling legs

Sling leg angle 0.0°

Load on quad assembly #VALUE!

Forerunner requirementsLoad on forerunner #VALUE!Wirerope sling, fibre core EN 13414-1 #VALUE!

Wirerope sling, steel core EN 13414-1 #VALUE!

Chain sling EN 818-4 #VALUE!

Sling leg requirementsLoad per sling leg #VALUE!Wirerope sling, fibre core EN 13414-1 #VALUE!

Wirerope sling, steel core EN 13414-1 #VALUE!

Chain sling EN 818-4 #VALUE!

Shackle requirementsLoad on each shackle #VALUE!

EN 13889 #VALUE!

Reference: Chapter 8 Lifting Sets and Appendix E

Quad Assembly (Masterlink +intermediate links) requirements

Recommended min. standard shackle

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-> Approved services -> Products and Manufacturers-> Type Approval -> Containers, Cargo Handling, Lifting Appliances and Miscellaneous Equipment (S) -> Lifting Sets

Quad assembly

Sling leg

Shackle

β

Master link

Fore runner

Special lifting set calculationsClient: 0 Time 8:44Project: 0 Date 23.04.21

Project No.: 0

These calculations are for containers where the centre of gravity is offset along one axis

Rating 0 kgEnhancement factor x No factor given Table 8.1Working Load Limit = 7.0 t

Semi-symmetric slings

a = mmb = mmw = mmh = mm

g1= #VALUE! °g2= #VALUE! °a1= #VALUE! °a2= #VALUE! °

Quad Assembly ( Masterlink + Intermediate links requirementsLoad on quad assembly #VALUE!

Forerunner requirementsLoad on forerunner #VALUE!Wirerope sling, fibre core EN 13414-1 #VALUE!

Wirerope sling, steel core EN 13414-1 #VALUE!

Chain sling EN 818-4 #VALUE!

Sling leg requirements g1 g2Load per sling leg #VALUE! #VALUE!Wirerope sling, fibre core EN 13414-1 #VALUE! #VALUE!

Wirerope sling, steel core EN 13414-1 #VALUE! #VALUE!

Chain sling EN818-4 #VALUE! #VALUE!

Shackle requirements g1 g2Load on each shackle #VALUE! #VALUE!Required shackle EN 13889 #VALUE! #VALUE!

If these values are modified after pad eyes calculation , remember to recheck pad eyes

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-> Approved services -> Products and Manufacturers-> Type Approval -> Containers, Cargo Handling, Lifting Appliances and Miscellaneous Equipment (S) -> Lifting Sets

Quad assembly

Sling leg

Shackle

β

Master link

Fore runner