clean copy liftinglugstress rev 1.5
DESCRIPTION
Design Calculation of Lug LiftingTRANSCRIPT
FRAME LIFTING LUG (ASSUMES 4 LIFT LUGS) JOB/ITEM NO. :
CLIENT : PLANT LOCATION :
ENGINEER : pr Checked :Date : 06/22/09 Revision : A
INPUT IN SHADED GREEN & RED AREAS TOTAL LIFTED LOAD 55 kips Considered a LIGHT Package!
1.000 inches Warning, tmax ≤ 1.904 inches AND, tmin ≥ 1.428 inches5.313 inches2.125 inches
PLATE RADIUS 2.657 inches DESIGN FACTOR made up from2.50 inches 1.252.75 inches 1.05
FY 50.00 ksi 1.03 SLING ANGLE W/ HORIZONTAL 45 deg 1.03 FILLET WELD SIZE 0.438 of an inch 1.00 DESIGN FACTOR 1.40 1.40 ASSUME OUT OF PLANE LOADING 5 % DO YOU INTEND TO USE A SPREADER BAR? YES Loads Proportioned for 0.6 x Total Lift Load per pair of lugs
23.10 kips23.10 kips these are factored SWL
32.67 kipsLUG LAYOUT
CHECK STRESS IN HORZ. PLANE AT PIN ASD cl ref
3.193.950.537.25 ksi7.25 ksi
20.00 ksi (EQU, F4-1)
SHEAR STRESS RATIO 0.36
7.25 ksi IN PLANE BENDING STRESS = 0
11.55 ksi18.80 ksi30.00 ksi (EQU, D1)
TENSION STRESS RATIO 0.6322.61 ksi #33.00 ksi NOTE : this is for a welded side plate, for top welded
COMBINED STRESS RATIO @ PIN 0.69 lugs d = the plate thickness!!
CHECK BEARING ON PLATE AT PIN1.5 inches PIN SWL = 341.5 inches
1.50021.78 ksi45.00 ksi (EQU, J8-1)
BEARING STRESS RATIO 0.48 DESIGN WELD SIZE BASED ON 0.33Fu = 21.5 ksiAND ELASTIC METHOD
CHECK STRESS IN PLANE BELOW PIN e = 4.190
5.31 Lw = 20.94
4.70 Ix = 30.61
0.89 Iy = 72.784.35 ksi Ip = 103.394.35 ksi fx = .28
20.00 ksi f'x = 1.58 SHEAR STRESS RATIO 0.22 f"x = 0.99
f'y = 1.584.35 ksi f"y = 3.56
13.50 ksi f = 5.7510.52 ksi 0.37828.37 ksi 0.437530.00 ksi Weld Size = 7/16
TENSION STRESS RATIO 0.95 S.R. = 0.86
29.35 ksi # Weld f.o.s = 2.47
33.00 ksiDESIGN VALID! COMBINED STRESS RATIO BELOW PIN 0.89
The min Factor of Safety for the design as noted F.O.S = 2.23Must Comply with the requirements of ASMEBTH-1-2005 Chapter 3-1.2
PLATE THICK t= PLATE WIDTH b= HOLE DIAM DIA=
BOTTOM OF PLATE TO TOP OF FRAME d= TOP OF FRAME TO CENTER OF RADIUS h=
DESIGN LOAD PER LIFTING LUG Pvert = DESIGN LOAD PER LIFTING LUG Ph =
Sling Load = Shackle SWL =
NET AREA An=(b-DIA)*t in2
NET SECTION Sxn=t*b2/6-t*DIA2/6 in3
Syn=(b-DIA)*(t2)/6 in3
SHEAR fv = Ph/An SHEAR RESULTANT fvr =(fv2+(PER/100*fv)2)0.5
SHEAR ALLOWABLE Fv = 0.4Fy
TENSION ft = Pvert/An
OUT OF PLANE fbo = PER/100*b*Pvert/Syn RESULTANT AXIAL STRESS far = ft + fbo TENSION ALLOWABLE Ft = 0.6Fy
COMBINED STRESS f = (far2+3*fvr2)0.5
COMBINED STRESS ALLOW Fa = 0.66Fy
SHACKLE PIN DIAMETER from Crosby Tab below
SHACKLE PIN DIAMETER = DIA1, User Input BEARING AREA Ap = DIA1*t in2
BEARING STRESS fp = SL/Ap BEARING STRESS ALLOW = 0.9FY
AREA A=b*t in2
SECTION Sx=t*b2/6 in3
Sy=b*(t2)/6 in3
SHEAR fv = Ph/A SHEAR RESULTANT fvr =(fv2+(PER/100*fv)2)0.5
SHEAR ALLOWABLE Fv = 0.4Fy
TENSION ft = Pvert/A IN PLANE BENDING STRESS = Ph*h/Sx OUT OF PLANE fbo = PER/100*b*Pvert/Sy RESULTANT AXIAL STRESS far = ft + fbo TENSION ALLOWABLE Ft = 0.6Fy
COMBINED STRESS f = (far2+3*fvr2)0.5
COMBINED STRESS ALLOW Fa = 0.66Fy
Weld
Weld
Equipment
NOTE: for Category A lifts, Min F.O.S is 2.0 - 2.5 for lug and for Category B lifts, Min F.O.S is 3.0 - 3.6 for the lug. Additional Notes # - the formula used to combine these stresses is equ (3-37) from ASME BTH-1-2005 with fy =0
FRAME LIFTING LUG (ASSUMES 4 LIFT LUGS)
1. STRESSES BASED ON AISC-ASD
2. DESIGN LOADS HAVE BEEN
INCREASED BY DESIGN FACTOR.
Considered a LIGHT Package!Warning, tmax ≤ 1.904 inches AND, tmin ≥ 1.428 inches
DESIGN FACTOR made up from
Consequence factor Weight factor Tilt & Yaw factor
Generally Accepted Min Design Factor
Loads Proportioned for 0.6 x Total Lift Load per pair of lugs
LUG LAYOUT
NOTE : this is for a welded side plate, for top welded
lugs d = the plate thickness!!
kips, Shackle Pin Dia OK!
Note: In General FPBW are required
min safety factor of 2.0 applied.DESIGN WELD SIZE BASED ON 0.33Fu = 21.5 ksi
e=((d/2)*2*d+2*b+d*b)/(2*d+3*b)+h
Lw=2*(b+d)+b
Ip=Ix+Iy
fx=Pvert*PER/100*e*d/2/Ix, (see ##)f'x=Ph/Lw, (see ##)f"x=(Ph*e*(d-(e-h)))/Ip, (see ##)f'x=Pvert/Lw, (see ##)f"y=(Ph*e*b/2)/Ip, (see ##)
Weld Size=f/(21.5*SIN(45*PI()/180))
INCHES
## (design factor of 2 used)
Confirm with ASME min F.O.S Req'd
Must Comply with the requirements of ASMEBTH-1-2005 Chapter 3-1.2
Dynamic Impact factor (Fh)
Skew Load factor (Heavy lifts only!)
for all but light lifts!! & recommended
Ix=2*b*(e-h)2+b*(d-(e-h))2+2*d3/12
Iy=2*d*(b/2)2+3*b3/12
f=SQRT((f'x+f"x)2+(f'y+f"y)2+fx2)
d
b
h
SL
ANGLE
Ph
Pv
Weld
WeldsEquipment
t
NOTE: for Category A lifts, Min F.O.S is 2.0 - 2.5 for lug and for Category B lifts, Min F.O.S is 3.0 - 3.6 for the lug.the formula used to combine these stresses is equ (3-37) from ASME BTH-1-2005 with fy =0
FRAME LIFTING LUG SHACKLE Type & Size JOB/ITEM NO. : 0
CLIENT : 0 PLANT LOCATION : 0
ENGINEER : pr Checked :Date : 06/22/09 Revision : A
INPUT IN SHADED GREEN & RED AREAS
The information on this sheet is based on Crosby Shackles both Forged and Alloy, Confirm with Vendor Type being USED!
Lifting lug Info TOTAL LIFTED LOAD 55 kips Considered a LIGHT Package!
1.000 inches tmax ≤ 1.904 inches AND, tmin ≥ 1.428 inches2.125 inches5.31 inches bmax ≤ 13.13 inches AND, bmin ≥ 5.313 inches
SLING ANGLE W/ HORIZONTAL 45 deg DESIGN FACTOR 1.40 ASSUME OUT OF PLANE LOADING 5 % DO YOU INTEND TO USE A SPREADER BAR? YES Loads Proportioned for 0.6 x Total Lift Load per pair of lugs
23.10 kips23.10 kips these are factored SWL
32.67 kips
Crosby Forged Anchor Shackles, G-2130 S-2130
Min Shackle Dia size based on SWL = 1.50 inches SWL = 34.00User Requested Shackle Dia = 1.5 inches SWL = 34.00
by User by SWLA 2.38 2.38B 1.63 1.63C 5.75 5.75D 1.5 1.5E 3.88 3.88F 3.63 3.63H 10 10L 6.88 6.88N 1.62 1.62P 7.73 7.73
Weight20.8 20.8(lbs)
Crosby Alloy Anchor Shackles, G-2140 S-2140
Min Shackle Dia size based on SWL = 1.50 inches SWL = 60.00User Requested Shackle Dia = 1.5 inches SWL = 60.00
by User by SWLA 2.38 2.38B 3.62 3.62C 1.62 1.62D 1.63 1.63E 5.75 5.75F 1.39 1.39G 6.88 6.88H 7.75 7.75J 10 10K 3.88 3.88L 1.54 1.54
Weight20.8 20.8(lbs)
PLATE THICK t= HOLE DIAM DIA= PLATE WIDTH b=
DESIGN LOAD PER LIFTING LUG Pvert = DESIGN LOAD PER LIFTING LUG Ph =
Sling Load = Shackle SWL =
FRAME LIFTING LUG SHACKLE Type & Size000
1. STRESSES BASED ON AISC-ASD
2. DESIGN LOADS HAVE BEEN
INCREASED BY DESIGN FACTOR.
The information on this sheet is based on Crosby Shackles both Forged and Alloy, Confirm with Vendor Type being USED!
Considered a LIGHT Package!tmax ≤ 1.904 inches AND, tmin ≥ 1.428 inches
bmax ≤ 13.13 inches AND, bmin ≥ 5.313 inches
Loads Proportioned for 0.6 x Total Lift Load per pair of lugs
YES Use!
kips, (this row's info is used)
Possible Warnings!!Packing plates req'd to make up gap
NOT USED!
kips
kips, (for the Users Info).
kips, (for the Users Info).
reference EM/039 Rev 3 1991
Dynamic Amplification Factors (Fh) for LIGHT Packages
OnShore LiftOffshore lift Upper Offshore LIFT Offshore lift lower
Bound Recommended Bound
1.25 2.5 2.0 1.3
Dynamic Amplification Factors (Fh) for MEDIUM Packages
(165kips)
(1100kips)
(2200kips)
2200
110
22
4400
1100
220
(KIP
S)
reference EM/039 Rev 3 1991
Dynamic Amplification Factors (Fh) for HEAVY Packages
Table form of the Graph aboveOn Shore Off Shore
DESIGN COMPLETIONALL 22,000 5,500 2,200 ALL
SLING DAF 1.05 1.1 1.2 1.25 SEE Graph above
DAF for module weights between the values given above, should be calculated by a linear interpolation.
Lift Weight (kips)
4,400 8,800 17,60013,200 22,000
(Kips)
Dynamic Amplification Factors (Fh) for LIGHT PackagesOffshore lift lower
Bound
1.3
Dynamic Amplification Factors (Fh) for MEDIUM Packages
(165kips)
Dynamic Amplification Factors (Fh) for HEAVY Packages
Table form of the Graph aboveOff Shore
COMPLETIONALL
SEE Graph above
DAF for module weights between the values given above, should be calculated by a
reference EM/039 Rev 3 1991
Angle 65º for single and dual lifts for differing L/B ratio's
reference EM/039 Rev 3 1991
Angle 70º for single and dual lifts for differing L/B ratio's
reference EM/039 Rev 3 1991
Angle 75º for single and dual lifts for differing L/B ratio's
reference EM/039 Rev 3 1991
Angle 80º for single and dual lifts for differing L/B ratio's
reference EM/039 Rev 3 1991
JIP, Joint Industry Project
HEEREMA DnV MICOPERI SHELL OXY BP AMOCO CHEVERON NOBLEBRV JIP (1991)(1983) (1985) (1985) SOLE PIPER BRUCE CATS ALBA DENTON
PIT (1990) (1990) (1990) (1990) (1990)(1988)
Range of Module >5,500 >,2200 >5,500 >5,500 >5,500 >5,500 >5,500 13,200/5,500 13,200/5,500
AWeight Factor
1.15 1.10 1.15 1.15 1.15 1.13 1.175 1.175
BD.A.F
1.10 1.10 1.10 1.10 1.10 1.10 1.10 1.10 1.10 1.15/1.20 1.15/1.20(Slings)
CSkew loads
1.50 1.25 1.50 1.50 1.50 1.50 1.25 1.50 1.25 1.50 1.25Factor
DC.G Shift
1.00 1.00 1.00 1.00 1.00 1.05 1.05 1.05Factor
ETilt
1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.05Factor
F AxBxCxD 1.90 1.51 1.90 1.99 1.90 1.90 1.66 1.99 1.62 2.23/2.33 1.77/1.85
NOTES: 1. Factor not quoted, but assumed for this comparison table.2. Factor used, but not quoted and assumed for this comparison table.
4. Factor based on average of factors for structural and equipment.
7. Tilt factor assumed if tilt is 1% or less.
BP LOC AMOCO CHEVERON HEEREMA NOBLEBRV JIP (1991)BRUCE (1991) CATS ALBA (1990) DENTON
(1990) (1990) (1990) (1990)
Range of Module >17,600 >2,200 >5,500 >5,500 >5,500 >5,500 22,000/13,200
AWeight Factor
1.15 1.15 1.15 1.25 1.15 1.125 1.175
BD.A.F
1.10 1.10 1.10 1.10 1.10 1.10 1.10/1.15(Slings)
CC.G Shift
1.08 10.50 1.05 1.05 1.05 1.03 1.05Factor
DTilt
1.08 1.03 1.03 1.03 1.03 1.03Factor
EYaw
1.00 1.05 1.05 1.00 1.05 1.05Factor
FTorsion
1.00 1.00 1.10 1.00 1.00 1.00 1.00Factor
GSkew loads
1.10 1.10 1.00 1.10 1.00 1.00 1.03Factor
H AxBxCxDxExFxG 1.50 1.58 1.58 1.64 1.44 1.38 1.44/1.51
NOTES: 1. Based upon average of factors for structural and equipment/outfitting.4. Factor assumed for this comparison table. Factor should be calculated by static's based upon C.G position and allowable tilt.
6. Yaw included in DAF and Skew factors.
Lift Criteria Comparison- Single Crane Lifts, HEAVY LIFTS
A(5) B(3)
Weights (kips)
1.15(1) 1.15(1) 1.15(1)(PRE-AFC)(4)
1.05(2) 1.05(2) 1.02(8)
1.03(7)
3. Skew load factor can be reduced to 1.25 min by use of curves, depending upon measured sling lengths.
5. Sling DAF varies linearly with the module weight, from 1.2 at 5,500kips to 1.15 at 13,200kips.
8. Factor can be reduced to 1.02 after weighing.
Lift Criteria Comparison- Dual Lifts, HEAVY LIFTS
Weights (kips)
(PRE-AFC)(1)
1.03(4)
1.00(6)
5. Sling DAF varies linearly with the module weight, from 1.15 at 13,200kips to 1.10 at 22,000kips