GEOMETRIC DATA Number of lifting lug, Nl Distance between lifting point on spreader bar, Sl Distance between lifting lug, Ll Lifting angle of spreader, ß1 ( 0° < ß1 < 90° ) Lifting angle of lifting lug, g1 ( g1° = 90° ) Height of lifting, Hl1 Height of lifting, Hl2 Percentage of out of plane loading, al If no spreader bar, then let (SI, ß1°= 0) or (ß1°= g1°) REMARK:ĭistance between lifting point on spreader bar, St Lifting angle of spreader, ß2 ( 0° < ß1 < 90° ) Height of lifting, Ht1 Height of c.o.g from Datum Line, Hcg Distance from lifting point to Datum Line, HlpĭERIVATION OF COMPONENT FORCES Empty weight of vessel, W e ( 6,650 Impact load factor, p Design load, W dsg ( = p.W e )Ĭomponent forces at lifting as follows :Qu C1 (N) (N) 31960 18452 38678 22331 44622 25763 49997 28866 54952 31727 59603 34412 64042 36975 68347 39460 72588 41909 76830 44358 81139 46846 85584 49412 90244 52102 95212 54971 100604 58084 106572 61529 113322 65426 121145 69943 130473 75329 LIFTING LUG ANALYSIS FOR HORIZONTAL EQUIPMENT f bĮRECTION WEIGHT, P SHOCK FACTOR, F NUMBER OF LUGS LIFTING LUG DIMENSIONS:įORCES : VERTICAL LIFTING FORCE, PV = P/4*F =, Pc = PV*COS(PHI)+5%PV=, Pr = PV*COS(90-PHI) = MATERIAL : OF DOUBLER PAD YIELD STRESS, Ys= : MATERIAL : OF PIN YIELD STRESS, Ys= ALLOWABLE STRESSES : TENSILE STRESS,Sa=0.6*Ys : SHEAR STRESS, Ss=0.4*Ys : BEARING STRESS, Se=0.8*Ys : BENDING STRESS, Sb=0.66*Ys : ALLOWABLE SHEAR STRESS FOR PIN Ss=0.4*Ys : INDUCED STRESSES : TENSILE STRESS SHEAR STRESS BEARING STRESS BENDING STRESS SHEAR STRESS ON PIN PROJECT : DORAD 800 MW COMBINED CYCLE POWER PLANT TOP GREAT ENGINEERING & MARINE PTE LTD

Lifting lug calculation pdf