base ring BASE RINGfor three pointBASE RINGfor two pointBASE
RING ADEQUACY(For One Point)(Refer Procedure 7-5 of Pressure Vessel
Design Manual by Dennis R Moss.)(Refer Procedure 7-5 of Pressure
Vessel Design Manual by Dennis R Moss.)(Refered Procedure 7-5 of
Pressure Vessel Design Manual by Dennis R Moss.)MATERIAL :MATERIAL
:Ys - YIELD STRESSYs - YIELD STRESSMATERIAL :SA 285 GR CMATERIAL
:SA 285 GR CMATERIAL :IS 2062 GR BYs - YIELD STRESS2109kg/cmYs -
YIELD STRESS2109kg/cmYs - YIELD STRESS2249kg/cmSba - ALLOW.BENDING
STRESS = 0.66 x Ys1391.94kg/cmSba - ALLOW.BENDING STRESS = 0.66 x
Ys1391.94kg/cmSba - ALLOW.BENDING STRESS = 0.66 x Ys1484.34kg/cmF2
- MAXIMUM LOAD (in horiz. position) :16198kgF2 - MAXIMUM LOAD (in
horiz. position) :31290kgF2 - MAXIMUM LOAD (in horiz. position)
:86274kgZ - SECTION MODULUS OF BASE RING+SKIRT213500mm3Z - SECTION
MODULUS OF BASE RING+SKIRT650328mm3Z - SECTION MODULUS OF BASE
RING+SKIRT766398mm3Di - INSIDE DIAMETER OF BASERING2830mmDi -
INSIDE DIAMETER OF BASERING5630mmDi - INSIDE DIAMETER OF
BASERING3640mmRm - MEAN RADIUS OF SECTION1625mmRm - MEAN RADIUS OF
SECTION3025mmRm - MEAN RADIUS OF SECTION1111.45mmBM - MAX.BENDING
MOMENT PRODUCED AROUND RING F2 x Rm x 0.0229BM - MAX.BENDING MOMENT
PRODUCED AROUND RING F2 x Rm x 0.0795BM - MAX.BENDING MOMENT
PRODUCED AROUND RINGF2 x Rm x 0.2387(0.0229 = Internal moment
Coefficient for Base Ring for 3 point lifting at Zero deg)(0.0795 =
Internal moment Coefficient for Base Ring for 2 point lifting at
Zero deg)(0.2387 = Internal moment Coefficient for Base Ring for
One point lifting at Zero
deg)602768kg-mm7524854kg-mmBM=22888761kg-mmBENDING STRESS IN BASE
RING = BM / Z282.33kg/cmBENDING STRESS IN BASE RING = BM /
Z1157.09kg/cmBENDING STRESS IN BASE RING = BM /
Z2986.54kg/cmSAFESAFEUNSAFEHENCE BASE RING IS SAFE WITH ADDITIONAL
STIFFENING BEAM.HENCE BASE RING IS SAFE WITH ADDITIONAL STIFFENING
BEAM.HENCE BASE RING IS UNSAFE WITHOUT ADDITIONAL STIFFENING
BEAMCHECK FOR SUFFICIENCY OF BRACING BEAMCHECK FOR SUFFICIENCY OF
BRACING BEAMSTIFFNER BEAMS PROVIDED AS INDICATED ABOVE WITH THE
TAILING LUGSTIFFNER BEAMS PROVIDED AS INDICATED ABOVE WITH THE
TAILING LUGMATERIAL :SA 36MATERIAL :SA 36TAILING BEAM SIZE
SELECTEDH 200*200*12*12TAILING BEAM SIZE SELECTEDH
250*250*9*14YIELD (Ys):2530kg/cmYIELD (Ys):2530kg/cmALLOW.BENDING
STRESS (Sba = 0.66 Ys) :1669.8kg/cmALLOW.BENDING STRESS (Sba = 0.66
Ys) :1669.8kg/cmSECTION MODULUS OF BEAM :479221.76mm3SECTION
MODULUS OF BEAM :846305mm3SECTION MODULUS OF BEAM (Z)
:479221.76mm3SECTION MODULUS OF BEAM (Z) :846305mm3MAXIMUM LOAD F2
: (0.453*T) FOR 3 BEAM CONST7337.69kgMAXIMUM LOAD F2 : (0.5*T) FOR
1 BEAM CONST15645.00kgL :200mmL :250mmMAX.BENDING STRESS (F2*L/Z)
:306.23kg/cm2MAX.BENDING STRESS (F2*L/Z) :462.16kg/cm2SAFESAFEHENCE
BRACING BEAM OF HE 200 B OR OF EQUIVALENT IS PROVIDED.HENCE BRACING
BEAM OF HE 200 B OR OF EQUIVALENT IS PROVIDED.
Skirt BracingTailing LugRmDist from N.Axis from CLTSkirt
BracingTailing LugRmDist from N.Axis from CLTTailing LugTRefer page
no 408 of moss for Rb. It is the distance from vessel axis to
neautral axis of anchor chair.
