MenuPIPING CALCULATIONSNameCodeSecCalculationsMin Thik
PipeB31.3304.1.2O.D. tm =PD(+C)I.D. tm
=P(d+2c)(+C)2(SE+Py)2[SE-P(1-y0]Pressure of Pipe (MAWP)5707.2New P
=2SE(t-c)D(This is "Design" Pressure per B31.3)Pressure of Pipe
(MAWP)5707.2Old P =2SE[t-(2xCRxYRS)-c]c=corrosion allowanceD(This
is "MAWP" per 570)BlanksB31.3304.5.3tm = dg3P(+C)16SEFillet
WeldsB31.3328.5.2 328.5.4Leg = 1.414 x ThroatXmin (Required Leg)
for socket/slip on FlangesThroat = .707 x Legtc = .5tr or .7 tmin
(Required Throat) for branch Conns.FlangesB16.5Allowable Press -
Table 1A and Table 2 Min Thick - Table 1A and Tables 7-27Max Hydro
Press - Par 2.5 - 1.5 x system design press rounded to 25psiFlanged
FittingsB16.5Annex DTables 1A and 7 thru 27 - New/Cold, if info to
calculate is unknown.Flanged FittingsB31.3 574304.1.2
11.2Old/Corroded:tm =1.5 PD(+C)Use 7000 for S if unknown
(Calculated)2 SEFlanged FittingsB16.5Annex DNew/Cold:t =1.5 PcdUse
7000 for S if unknown (Calculated)(2S-1.2Pc)Valves Min ThkB31.3
574304.1.2 11.2t m=1.5 PD(+C)Use 7000 for S if unknown
(Calculated)2SEHydro Press PipeB31.3345.4.2Min press P T =1.5 PSTST
= Stress Value/test TempSS = StressValue/Designe TempHydro Press
FittingsB16.5Min Press =1.5 x 100% Flange Rating (Round to the next
25PSI)1 Min for NPS 2 and under and 2 min for NPS 2.5 - 8 3 min 10
and upAir Press PipeB31.3345Pnuematic 1.1 x PJoint Eff / Quality
FactorB31.3Castings: Table 302.3.3C / Piping: Table A-1A / A-1B
(Add NDE See table 302.3.4)Flanged Fittings Areas Below Min
tB16.56.1.1Diameter = .35 dtmd=IDA=R2Meas Thk = .75tmtm =Min wall
from chartsDist Appart = 1.75 dtmTables 13-28Corrosion
Rates5707.1.1RL =tactual - trequiredtinitial - tactualtprevious -
tactualCRYearsYearsTension TestsSEC. IXQW.152Turn Spec. Area =
A=R2or.7854 D2Reduce Spec. Area = Width x ThicknessTensile Strength
= Load / AreaLoad = Area x Tensile StrengthPWHT (Branch
Connections)B31.3331.1.3Must be 2X thickness for given material in
Table 331.1.1Sketch 1 - Branch thickness + fillet throatSketch 2 -
header thickness + fillet throatSketch 3 - greater or branch +
fillet throat or repad + fillet throatSketch 4 - header thickness +
repad thickness + fillet throatSketch 5 - same as sketch 1
(LT)CR=(ST)CR=
Material PropertiesMAXIMUM ALLOWABLE STRESS, KSI, FOR METAL
TEMP. OF ===>cont'd ==>Nominal CompositionSPEC NO.TYPE/
GRADEPRODUCT FORMMINIMUM TENSILE, psiMINUMUM YIELD, psi-20 to
10015020025030040050060065070075080085090095010001050110011501200125013001350140014501500C-Mn-SiSA36plate,
sheet58,00036,00014.514.514.514.514.514.514.514.514.5C-MnSA53S/Bsmls.
pipe60,00035,00015.015.015.015.015.015.015.015.015.014.413.010.87.85C-SiSA106Bsmls.
pipe60,00035,00015.015.015.015.015.015.015.015.015.014.413.010.88.76.54.52.5CSA179smls.
tube47,00026,00011.811.811.811.811.811.811.811.811.811.510.69.27.96.51Cr-1/5
MoSA193B7bolting (
