Lifting & Tailing Lug Calculation > INPUT VALUES

According to JPI-7S-80-94 > OUTPUT VALUES

Item No. D75-D-117/217/317/417

Selected Lifting Lug Type from ARAMCO Std.PP-502206 TYPE "17"

Max. Lifting Capacity For TYPE 17 As per PP-502206 17 tons

Shackle Selected Crosby G-2130

Shackle Capacity Rating As per PP-502206 13.5 tons

No. of Lifting Lugs N= 2 (From GA DWG.)

No. of Tailing Lugs M= 1 (From GA DWG.)

Base to hole center of lifting lug Y= 6925 (mm) (From GA DWG.)

Base to Center of Gravity of Vessel G= 3594.19 (mm) (From PV-Elite Calculations)

Vessel center line to edge of base R= 1005 (mm)

Material of Lug A-36

Yield Strength of Material σy= 261.937 (MPa)

Young's Modulus Eo= 20389 (MPa)

Joint Efficiency (Fillet weld) η= 0.450

Erection Weight W= 8800 (kg) (From GA DWG.)

Impact factor IF= 1.4

Design Load=IF * W W'= 120822.21666592 (N)

Inclination angle (tower center line to horizontal) A= 0 (deg)

Force acting on each lifting lug LL= 31354.3684 (N)

Wh'=LH 31354.368 (N)

Wv'=LV 0.0000 (N)

Lifting Angle (In vertical Position) Φ= 5 (deg)(SEE FIGURE 1)

Lifting Angle (In Horizontal Position) θ= 5 (deg)

Components of Wh' & Wv'

Fh'=Wh'/cosΦ 31474.1370 (N)

Qh'=Wh' * tanΦ 2743.137 (N)

Fv'=Wv'/cosθ 0.0000 (N)

Qv'=Wv' * tanθ 0.0000 (N)

TL= 58113.480 (N)

Force acting on the base (tailing lug) TV= 58113.480 (N)

TH= 0.000 (N)

Tailing Lug Dimensions:

Shackle's pin diameter Dp= 57.15 (mm)

Width of lug at the base W= 250 (mm)

End of lug to the hole center J= 83 (mm)

height of hole center to the base of lug h= 160 (mm)

Diameter of lug hole for pin D= 62 (mm)

Thickness of lug T= 38 (mm)

Thickness of cheek plate t= 0 (mm)

Outer radius of cheek plate r = 0 (mm)

Weld length at the base to skirt wall L1= 250 (mm)

Weld length to the skirt compression ring L2= 0 (mm)

Weld length to the skirt base ring L3= 57.5 (mm)

Total weld length L= 307.5 (mm)

Modulus of weld Z= 31518.75

Size of weld lug w= 12 (mm)

Modulus of lug z= 395833.333333333

Stress Analysis of Tailing Lug FIGURE 1

FROM TABLE:

Maximum possible tailing force in line with lug center line TV= 58113.4797823845 (N)

Shear of lug at eye Ss= 14.704827880158 (MPa) Should be Less Than 104.7748 (MPa)

OK

Bearing at pin Sp= 26.7594418116612 (MPa) Should be Less Than 235.7433 (MPa)

OK

Tensile stress in lug at eye St= 8.1345856358321 (MPa) Should be Less Than 157.1622 (MPa)

OK

Tensile stress of fillet weld at lug Sw= 7.87445525506566 (MPa) Should be Less Than 70.72299 (MPa)

OK

(mm2)

(mm3)

0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0 75.0 80.0 85.0 90.00.0000

25000.0000

50000.0000

75000.0000

LIFTING LUG LL

LH

LV

Σ(LV & LH)

ANGLE 'A' (Degress)

FO

RC

ES

(N

)

FROM TABLE:

Maximum possible tailing force perpendicular to lug center line TH= 40309.5757367467 (N)

Shear of lug at eye Ss= 10.199791431363 (MPa) Should be Less Than 104.7748 (MPa)

OK

Bearing at pin Sp= 18.5613002425504 (MPa) Should be Less Than 235.7433 (MPa)

OK

Bending stress at lug base Sb= 16.2935548241165 (MPa) Should be Less Than 172.87842 (MPa)

OK

Shear stress in fillet weld at lug Sw1= 5.4620021323505 (MPa) Should be Less Than 47.14866 (MPa)

OK

Bending stress in fillet weld at lug Sw2= 17.0521042180698 (MPa) Should be Less Than 77.795289 (MPa)

OK

FROM TABLE:

Maximum value of Σ(TV & TH) 73470.3470263455 (N)

Shear of lug at eye Ss= 18.5906748548445 (MPa) Should be Less Than 104.7748 (MPa)

OK

Bearing at pin Sp= 33.8307993858938 (MPa) Should be Less Than 235.7433 (MPa)

OK

Bending stress at lug base Sb= 29.6974876401228 (MPa) Should be Less Than 172.87842 (MPa)

OK

Shear stress in fillet weld at lug Sw1= 9.95533157538556 (MPa) Should be Less Than 47.14866 (MPa)

OK

Bending stress in fillet weld at lug Sw2= 31.0800595524232 (MPa) Should be Less Than 77.795289 (MPa)

OKLifting Lug Dimensions:

Vessel 'O.D' 1866 (mm)

(SEE FIGURE 2)

Shackle length 'Ls' 130 (mm)

T''= 20 (mm)

E= 83 (mm)

(SEE FIGURE 2)

C= 255 (mm)

F=C-E 172 (mm)

H= 102 (mm)

J'=H+100 202 (mm)

B= 60 (mm)

D'= 45 (mm)

S= 85 (mm)

W''= 280 (mm)

G'= 51 (mm)

P= 32 (mm)

Ri= 140 (mm)

T'= 13 (mm)

Stress Analysis of Lifting Lug

Case:1:- Vessel in vertical position:

FROM TABLE:

Maximum value of LV= 60411.1083159623 (N) FIGURE 2

''A'' Section:

Bending stress 105.826551447111 (MPa) Should be Less Than 174.62466492 (MPa)

Shear stress τ= 25.7068546025371 (MPa) Should be Less Than 100.81959831 (MPa)

''B'' Section:

Tensile stress 12.8534273012686 (MPa) Should be Less Than 174.62466492 (MPa)

Bending stress (Inplane) 38.9887294805147 (MPa) Should be Less Than 174.62466492 (MPa)

Bending stress (Outplane) 43.8566378763086 (MPa) Should be Less Than 174.62466492 (MPa)

''C'' Section:

Bending stress 10.7876979135647 (MPa) Should be Less Than 174.6246492 (MPa)

Tensile stress 60.3089013433689 (MPa) Should be Less Than 174.6246492 (MPa)

''D'' Section:

Shear stress τ= 6.75437257557718 (MPa) Should be Less Than 45.368819238 (MPa)

Rib Analysis:

σb=

σt=

σb1=

σb2=

σb=

σt=

Induced compressive force 11830.4392124598 (N) Should be Less Than 2608554.7203 (MPa)

Moment of inertia of rib I= 186666.666666667

Allowable axial load 2608554.72025179 (N)

Tensile stress 2.11257843079639 (MPa) Should be Less Than 174.62466492 (MPa)

2.11257843079639 (MPa) Should be Less Than 261.937 (MPa)

Case:1:- Vessel in horizontal position:

FROM TABLE:

Maximum value of LH= 31626.2239878748 (N)

''A'' Section:

Shear stress τ= 1.16729241494759 (MPa) Should be Less Than 100.81959831 (MPa)

''B'' Section:

Tensile stress 0.583646207473795 (MPa) Should be Less Than 174.6246492 (MPa)

Shear stress τ= 1.16729241494759 (MPa) Should be Less Than 100.81959831 (MPa)

''C'' Section:

Tensile stress 0.489845924129792 (MPa) Should be Less Than 174.6246492 (MPa)

Bending stress 10.0445532818633 (MPa)

Bending stress 12.1971635108318 (MPa)

Total Bending stress 22.2417167926951 (MPa) Should be Less Than 174.62466492 (MPa)

Shear stress

5.62038160728475 (MPa)

1.36457078864728 (MPa)

5.78366171631209 (MPa) Should be Less Than 100.81959831 (MPa)

''D'' Section:

K= 355 (mm)

I= 36586666.6666667

I'= 36586666.6666667

e= 21.495867768595 (mm)

161.495867768595 (mm)

6311562.32506887

R'= 45978.817811831 (N)

Shear stress

-1.60471755634573 (MPa)

Fc=

(mm4)

Pk=

σt=

Fc /WT=

σt=

σt=

σb1=

σb2=

σb=

τ1=

τ2=

τo=

(mm4)

(mm4)

Rmax=

Jw= (mm3)

τ1=

Shear stress-4.79146299410327 (MPa)

0.21798610736863 (MPa)

5.05774198655003 (MPa) Should be Less Than 45.368819238 (MPa)

Moment at fillet weld -1278928.92912247 (N-mm)

Torsion T= -2161672.75753472 (N-mm)

Shear stress due to torsion -4.25472148549687 (MPa) Should be Less Than 45.368819238 (MPa)

Rib Analysis:

Induced compressive force 6193.43248018726 (N) Should be Less Than 511276725.17 (MPa)

Moment of inertia of rib I= 36586666.6666667

Allowable axial load 511276725.16935 (N)

Shear stress τ= 12.6315433548986 (MPa) Should be Less Than 45.368819238 (MPa)

Tensile stress 1.16055042764177 (MPa) Should be Less Than 174.62466492 (MPa)

1.10597008574773 (MPa) Should be Less Than 261.937 (MPa)

RESULT:

LIFTING LUG IS SATISFIED.

TAILING LUG IS SATISFIED.

τ2=

τ3=

τo=

Mo=

τt=

Fc=

(mm4)

Pk=

σt=

Fc /WT=

> INPUT VALUES

> OUTPUT VALUES

SKETCH OF ERECTING DIMENSIONS.

TABLE: TABULATION OF FORCES ACTING ON LIFTING AND TAILING LUG.

LL LH LV TL TV TH Σ(LV & LH) Σ(TV & TH)

0.00 31354.3684 31354.3684 0.0000 58113.4798 58113.4798 0.0000 31354.3684 58113.4798

2.50 31537.3230 31507.3064 1375.6387 57747.5708 57692.6079 2518.9137 32882.9451 60211.5215

5.00 31718.6737 31597.9746 2764.4646 57384.8692 57166.5025 5001.4209 34362.4392 62167.9234

7.50 31899.1254 31626.2240 4163.6714 57023.9658 56536.1179 7443.1211 35789.8954 63979.2390

10.00 32079.3689 31592.0112 5570.5240 56663.4788 55802.6333 9839.5098 37162.5352 65642.1431

12.50 32260.0919 31495.3989 6982.3618 56302.0329 54967.4499 12185.9903 38477.7607 67153.4402

15.00 32441.9893 31336.5553 8396.6047 55938.2381 54032.1888 14477.8814 39733.1600 68510.0702

17.50 32625.7743 31115.7540 9810.7595 55570.6681 52998.6881 16710.4222 40926.5135 69709.1103

20.00 32812.1895 30833.3724 11222.4298 55197.8377 51869.0007 18878.7723 42055.8021 70747.7731

22.50 33002.0193 30489.8902 12629.3260 54818.1780 50645.3926 20978.0085 43119.2162 71623.4012

25.00 33196.1039 30085.8874 14029.2797 54430.0089 49330.3409 23003.1158 44115.1671 72333.4567

27.50 33395.3546 29622.0413 15420.2587 54031.5076 47926.5325 24948.9737 45042.2999 72875.5062

30.00 33600.7727 29099.1227 16800.3863 53620.6713 46436.8635 26810.3357 45899.5091 73247.1992

32.50 33813.4712 28517.9923 18167.9648 53195.2743 44864.4393 28581.8001 46685.9572 73446.2394

ANGLE. 'A'

35.00 34034.7011 27879.5950 19521.5026 52752.8144 43212.5757 30257.7713 47401.0976 73470.3470

37.50 34265.8841 27184.9536 20859.7486 52290.4485 41484.8020 31832.4081 48044.7022 73317.2101

40.00 34508.6522 26435.1613 22181.7341 51804.9122 39684.8652 33299.5557 48616.8953 72984.4209

42.50 34764.8989 25631.3721 23486.8253 51292.4189 37816.7380 34652.6559 49118.1973 72469.3939

45.00 35036.8430 24774.7893 24774.7893 50748.5306 35884.6301 35884.6301 49549.5786 71769.2602

47.50 35327.1121 23866.6510 26045.8792 50167.9924 33893.0044 36987.7238 49912.5302 70880.7282

50.00 35638.8506 22908.2116 27300.9435 49544.5154 31846.6006 37953.3007 50209.1551 69799.9013

52.50 35975.8636 21900.7181 28541.5716 48870.4894 29750.4690 38771.5660 50442.2897 68522.0350

57.50 36745.4666 19743.3248 30990.8122 47331.2835 25431.0801 39918.7996 50734.1370 65349.8797

60.00 37191.0953 18595.5477 32208.4333 46440.0261 23220.0130 40218.2423 50803.9810 63438.2553

62.50 37688.9643 17402.8270 33430.5197 45444.2880 20983.8370 40309.5757 50833.3467 61293.4127

65.00 38251.1040 16165.6151 34667.2734 44320.0086 18730.4450 40167.5689 50832.8885 58898.0139

67.50 38893.4312 14883.8717 35932.8450 43035.3543 16468.9171 39759.4830 50816.7167 56228.4001

70.00 39637.4699 13556.8132 37247.0380 41547.2768 14210.0056 39041.6694 50803.8512 53251.6750

72.50 40513.0749 12182.5166 38638.0062 39796.0669 11966.9081 37954.1836 50820.5228 49921.0917

75.00 41562.9096 10757.2726 40146.6878 37696.3975 9756.5456 36411.9239 50903.9604 46168.4695

77.50 42850.1621 9274.4725 41834.4422 35121.8925 7601.7688 34289.3634 51108.9147 41891.1322

80.00 44472.5982 7722.5856 43796.9595 31877.0202 5535.3865 31392.7366 51519.5452 36928.1231

82.50 46589.9932 6081.2144 46191.4093 27642.2303 3608.0351 27405.7472 52272.6237 31013.7823

85.00 49482.5992 4312.6927 49294.3030 21857.0183 1904.9647 21773.8457 53606.9957 23678.8104

87.50 53691.1400 2341.9746 53640.0379 13439.9367 586.2418 13427.1449 55982.0125 14013.3867

90.00 60411.1083 0.000 60411.1083 0.000 0.0000 0.000 60411.1083 0.000

0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0 75.0 80.0 85.0 90.00.0000

25000.0000

50000.0000

75000.0000

LIFTING LUG LL

LH

LV

Σ(LV & LH)

ANGLE 'A' (Degress)

FO

RC

ES

(N

)

0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0 75.0 80.0 85.0 90.00.0000

25000.0000

50000.0000

75000.0000

100000.0000

TAILING LUG

TLTVTHΣ(TV & TH)

ANGLE 'A'(Degrees)

FO

RC

ES

(N

)

0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0 75.0 80.0 85.0 90.00.0000

25000.0000

50000.0000

75000.0000

100000.0000

TAILING LUG

TLTVTHΣ(TV & TH)

ANGLE 'A'(Degrees)

FO

RC

ES

(N

)

FIGURE 2

OK

OK

OK

OK

OK

OK

OK

OK

OK

OK

OK

OK

OK

OK

OK

OK

OK

OK

OK

OK

OK