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Pipeline Size Modules

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CALCULATOR MODULE : Line Pipe Cross Section   ±

Calculate pipe internal and external diameter, cross section area and EI from pipe schedule diameter and wall thickness.

Use the Result Table option to display the results for the selected pipe diameter. For multi layer pipes (line pipe with outside layers and or inside layers), the results for each layer are displayed in the output view at the bottom of the page. Change the number of layers on the setup page.

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CALCULATOR MODULE : Line Pipe Unit Mass And Weight   ±
CALCULATOR MODULE : Line Pipe Wall Thickness And Diameter   ±

Calculate pipe nominal wall thickness, minimum wall thickness and pressure design wall thickness from pipe schedule diameter and wall thickness.

For most pipeline codes the pressure design thickness equals the nominal wall thickness minus the fabrication allowance and the corrosion allowance (use the with tolerance calculator). For some codes the fbrication allowance is ignored and the pressure design thickness equals the nominal wall thickness minus the corrosion allowance.

Use the Result Table option to display the results for the selected pipe schedule and pipe diameter.

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CALCULATOR MODULE : Plastic Pipe Cross Section   ±

Calculate plastic pipe diameter, wall thickness, tolerances, dimension ratio, unit mass (mass per length), and total mass from pipe schedule diameter and wall thickness or dimension ratio.

Use the Result Table option to display the results for the selected pipe diameter. The dimension ratio is based on the Renard R10 series. The standard dimension ratio SDR equals R10 + 1 and is calculated from the outside diameter divided by the pressure design wall thickness. The standard internal dimension ratio SIDR equals R10 - 1 and is calculated from the inside diameter divided by the pressure design wall thickness.

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CALCULATOR MODULE : Line Pipe Diameter Wall Thickness And Mass Schedule   ±
CALCULATOR MODULE : ASME B31.3 Process Piping Line Pipe Schedule   ±

Calculate ASME B31.3 process piping schedule for metal and plastic piping.

The piping minimum wall thickness and hoop stress wall thickness schedule can be calculated from the nominal wall thickness, fabrication tolerance and corrosion allowance.

`tm = tn - fa `
`tm = (1 - fx) tn `
`t = tm - c `

where :

tn = nominal wall thickness
tm = minimum wall thickness
t = hoop stress wall thickness
c = corrosion thickness allowance
fa = negative fabrication thickness allowance
fx = negative fabrication fraction

The minimum wall thickness equals the nominal wall thickness minus the fabrication allowance. The pressure containment wall thickness equals the nominal wall thickness minus the fabrication tolerance, and minus the corrosion allowance. Fabrication tolerance can be defined by either a fabrication allowance, or a fabrication fraction. The pipe diameter can be defined by either the outside diameter or the inside diameter. Use the Result Table option to display a table of pipe dimensions versus wall thickness, wall tolerance, or piping diameter for metal pipes, or pipe dimension versus wall thickness for plastic pipes.

Calculate metal piping maximum and minimum diameter schedule. Use the Result Table option to display a table of pipe dimensions versus wall thickness, wall tolerance, or piping diameter.

Calculate piping unit mass and joint mass schedule for metal and plastic piping. Use the Result Table option to display a table of pipe dimensions and mass versus wall thickness.

Calculate piping tensile stress, yield stress and allowable schedule for metal piping. Use the Result Table option to display a table of stress versus material type.

Plastic pipe wall thickness can be defined by wall thickness or diameter ratio (DR or IDR). Select standard diameter ratios from the plastic pipe schedule (SDR or SIDR), or use user defined diameter ratios (DR or IDR).

Reference : ANSI/ASME B31.3 : Process Piping (2018)

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CALCULATOR MODULE : ASME B31.3 Process Piping Mass And Weight   ±

Calculate ASME B31.3 process piping unit mass (mass per length), unit weight (weight per length), and total mass for metal and plastic pipe. The mass per joint can be calculated from the joint length. Construction quantities can be calculated from the total pipe length. Pipe mass and pipe unit weight (weight per length) can be calculated for multi layer pipelines (dry empty, dry full, wet empty and wet full piping). For multi layer pipelines, the first internal layer is the line pipe. Change the number of layers on the setup page.

The pipe diameter and thickness are calculated from the pipe schedule. Plastic pipe wall thickness can be defined by wall thickness or diameter ratio (DR or IDR). Select standard diameter ratios from the plastic pipe schedule (SDR or SIDR), or use user defined diameter ratios (DR or IDR). Use the Result Table option to display a table of pipe mass versus schedule wall thickness for the selected diameter.

Reference : ANSI/ASME B31.3 : Process Piping (2018)

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CALCULATOR MODULE : ASME B31.4 Liquid Pipeline Mass And Weight   ±

Calculate ASME B31.4 liquid pipeline unit mass (mass per length), unit weight (weight per length), and total mass. The mass per joint can be calculated from the joint length. Construction quantities can be calculated from the total pipe length. Pipe unit mass and pipe unit weight (weight per length) can be calculated for multi layer pipelines (dry empty, dry full, wet empty and wet full pipelines). For multi layer pipelines, the first internal layer is the line pipe. Change the number of layers on the setup page. The line pipe diameter and thickness are calculated from the pipe schedule.

Use the Result Table option to display a table of pipe mass versus schedule wall thickness for the selected diameter.

Reference : ANSI/ASME B31.4 : Pipeline Transportation Systems For Liquids And Slurries (2012)

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CALCULATOR MODULE : ASME B31.8 Gas Pipeline Mass And Weight   ±

Calculate ASME B31.8 gas pipeline unit mass (mass per length), unit weight (weight per length), and total mass for metal and plastic pipe.

The mass per joint can be calculated from the joint length. Construction quantities can be calculated from the total pipe length. Pipe mass and pipe unit weight (weight per length) can be calculated for multi layer pipelines (dry empty, dry full, wet empty and wet full pipelines). For multi layer pipelines, the first internal layer is the line pipe. Change the number of layers on the setup page. The line pipe diameter and thickness are calculated from the pipe schedule.

Plastic pipe wall thickness can be defined by wall thickness or diameter ratio (DR or IDR). Select standard diameter ratios from the plastic pipe schedule (SDR or SIDR), or use user defined diameter ratios (DR or IDR). Plastic pipe is generally only used in low pressure distribution systems.

Use the Result Table option to display a table of pipe mass versus schedule wall thickness for the selected diameter.

Reference : ANSI/ASME B31.8 : Gas Transmission And Distribution Piping Systems (2018)

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CALCULATOR MODULE : ASME B31.1 Power Piping Line Pipe Schedule   ±

Calculate ASME B31.1 power piping schedule for metal and plastic piping.

Calculate the piping minimum wall thickness and hoop stress wall thickness schedule from the nominal wall thickness, fabrication tolerance and corrosion allowance.

`tm = tn - fa `
`tm = (1 - fx) tn `
`t = tm - c `

where :

tn = nominal wall thickness
tm = minimum wall thickness
t = hoop stress wall thickness
c = corrosion thickness allowance
fa = negative fabrication thickness allowance
fx = negative fabrication fraction

The minimum wall thickness equals the nominal wall thickness minus the fabrication allowance. The pressure containment wall thickness equals the nominal wall thickness minus the fabrication tolerance, and minus the corrosion allowance. Fabrication tolerance can be defined by either a fabrication allowance, or a fabrication fraction. The pipe diameter can be defined by either the outside diameter or the inside diameter. Use the Result Table option to display a table of pipe dimensions versus wall thickness, wall tolerance, or piping diameter for metal pipes, or pipe dimension versus wall thickness for plastic pipes.

Calculate metal piping maximum and minimum diameter schedule. Use the Result Table option to display a table of pipe dimensions versus wall thickness, wall tolerance, or piping diameter.

Calculate piping unit mass and joint mass schedule for metal and plastic piping. Use the Result Table option to display a table of pipe dimensions and mass versus wall thickness.

Calculate piping tensile stress, yield stress and allowable schedule for metal piping. Use the Result Table option to display a table of stress versus material type.

Plastic pipe wall thickness can be defined by wall thickness or diameter ratio (DR or IDR). Select standard diameter ratios from the plastic pipe schedule (SDR or SIDR), or use user defined diameter ratios (DR or IDR).

Reference : ANSI/ASME B31.1 : Power Piping (2014)

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CALCULATOR MODULE : ASME B31.1 Power Piping Mass And Weight   ±

Calculate ASME B31.1 power piping unit mass (mass per length), unit weight (weight per length), and total mass for metal and plastic pipe.

The mass per joint can be calculated from the joint length. Construction quantities can be calculated from the total pipe length. Pipe unit mass (mass per length) and unit weight (weight per length) can be calculated for multi layer pipelines (dry empty, dry full, wet empty and wet full piping). For multi layer pipelines, the first internal layer is the line pipe. Change the number of layers on the setup page.

Plastic pipe wall thickness can be defined by wall thickness or diameter ratio (DR or IDR). Select standard diameter ratios from the plastic pipe schedule (SDR or SIDR), or use user defined diameter ratios (DR or IDR). Plastic pipe is generally only used in low pressure auxilliary systems.

Use the Result Table option to display a table of pipe mass or pipe weight versus wall thickness for the selected diameter.

Reference : ANSI/ASME B31.1 : Power Piping (2014)

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CALCULATOR MODULE : ASME B31.5 Refrigeration Piping Line Pipe Schedule   ±
CALCULATOR MODULE : ASME B31.5 Refrigeration Piping Mass And Weight   ±

Calculate ASME B31.5 refrigeration piping unit mass (mass per length), unit weight (weight per length), and total mass.

The mass per joint can be calculated from the joint length. Construction quantities can be calculated from the total pipe length. Pipe mass and pipe unit weight (weight per length) can be calculated for multi layer pipelines (dry empty, dry full, wet empty and wet full pipelines).

Calculate pipeline fluid density, fluid volume and fluid mass for two phase gas liquid piping. The two phase gas liquid calculator can also be used to calculate the density of single phase gas.

Use the Result Table option to display a table of pipe properties versus schedule wall thickness for the selected diameter. For multi layer pipelines, the first internal layer is the line pipe. Change the number of layers on the setup page. The line pipe diameter and thickness are calculated from the pipe schedule.

Reference : ANSI/ASME B31.5 : Refrigeration Piping And Heat Transfer Components (2013)

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CALCULATOR MODULE : DNVGL ST F101 Submarine Pipeline Line Pipe Schedule   ±

Calculate DNVGL-ST-F101 subsea pipeline schedules for diameter, wall thickness, mass, weight, and stress.

Use the Result Table option to display schedule tables. Refer to the links below for other options.

Reference : DNVGL-ST-F101 : Submarine Pipeline Systems (Download from the DNVGL website)

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CALCULATOR MODULE : DNVGL ST F101 Submarine Pipeline Mass And Weight   ±

Calculate DNVGL-ST-F101 subsea pipeline unit mass (mass per length), and total mass from length.

The mass per joint can be calculated from the joint length. Construction quantities can be calculated from the total pipe length. Pipe unit mass (mass per length) and pipe unit weight (weight per length) can be calculated for multi layer pipelines (dry empty, dry full, wet empty and wet full pipelines). For multi layer pipelines, the first internal layer is the line pipe. Change the number of layers on the setup page.

Use the Result Table option to display a table of pipe mass and weight versus schedule wall thickness for the selected diameter.

Reference : DNVGL-ST-F101 : Submarine Pipeline Systems (Download from the DNVGL website)

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CALCULATOR MODULE : High Temperature High Pressure (HTHP) Pipeline Line Pipe Schedule   ±
CALCULATOR MODULE : API RP 1111 Pipeline Limit State Design Line Pipe Schedule   ±
CALCULATOR MODULE : API RP 1102 Pipeline Crossing Line Pipe Schedule   ±

Calculate API RP 1102 steel pipeline diameter, nominal wall thickness and pressure containment wall thickness.

For API RP 1102, the fabrication tolerance is included in the design factor. The fabrication tolerance is not required provided that the tolerance is within the relevant specification. The pressure containment wall thickness equals the nominal wall thickness minus the corrosion allowance. The pipe diameter can be defined by either the outside diameter or the inside diameter.

Use the Result Table option to display a table of pipe cross section versus wall thickness for the selected diameter.

Reference : API RP 1102 : Steel Pipelines Crossing Railroads and Highways (2012)

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CALCULATOR MODULE : API 5L Line Pipe Diameter Tolerance   ±

Calculate API 5L line pipe maximum and minimum diameter from nominal diameter and tolerance.

Tolerances can be calculated from API 5L, or specified as either a diameter allowance or a diameter fraction.

References :

API 5L : Specification for Line Pipe (2007)
ISO 3183 : Petroleum and Natural Gas Industries - Steel Pipe For Pipeline Transportation Systems (2007)

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CALCULATOR MODULE : API 5L Line Pipe Wall Thickness Tolerance   ±

Calculate API 5L line pipe maximum and minimum wall thickness from tolerance.

Wall thickness tolerance can be calculated from API 5L, or specified as either a wall thickness fraction, or a wall thickness allowance.

References :

API 5L : Specification for Line Pipe (2007)
ISO 3183 : Petroleum and Natural Gas Industries - Steel Pipe For Pipeline Transportation Systems (2007)

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CALCULATOR MODULE : ASME B31 Pipe Diameter And Wall Thickness Schedule   ±

Calculate ASME B31 line pipe diameter and pressure design wall thickness with and without fabrication tolerances.

For some pipe codes (eg ASME B31.4, ASME B31.8, API RP 111 and AS 2885.1) the fabrication tolerance is included in the design factor, and provided that fabrication tolerances are within the relevant specification. For these codes the pressure design or pressure containment wall thickness equals the nominal wall thickness minus the corrosion and mechanical allowance.

For other codes (eg ASME B31.1, ASME B31.3 and ASME B31.5) the fabrication tolerance must be included in the pressure design calculation. For these codes the minimum wall thickness equals the nominal wall thickness minus the fabrication allowance. The pressure containment wall thickness equals the nominal wall thickness minus the fabrication allowance, and minus the corrosion allowance. Fabrication tolerance can be defined by either a fabrication allowance, or a fabrication fraction.

The pipe diameter can be defined by either the outside diameter or the inside diameter. Use the Result Table option to display a table of pipe cross section versus wall thickness for the selected diameter.

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CALCULATOR MODULE : DNVGL RP F101 Corrosion Line Pipe Schedule   ±

Calculate DNVGL-RP-F101 pipeline diameter and wall thickness schedule for corrosion.

The minimum wall thickness equals the nominal wall thickness minus the fabrication allowance. The pressure containment wall thickness equals the nominal wall thickness minus the fabrication allowance, and minus the corrosion allowance. Fabrication tolerance can be defined by either a fabrication allowance, or a fabrication fraction. The pipe diameter can be defined by either the outside diameter or the inside diameter. Use the Result Table option to display a table of pipe wall thickness versus schedule wall thickness for the selected diameter.

The pipe diameter can also be calculated from the measured circumference. Measuring the circumference is often the most convenient way to measure the pipe diameter.

Reference : DNVGL-RP-F101 : Corroded Pipelines (Download from the DNVGL website)

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CALCULATOR MODULE : Bolt Pitch Diameter From Bolt Size And Thread   ±

Calculate bolt pitch diameter from bolt diameter D and bolt pitch P.

For ANSI threads, the bolt pitch diameter Dp is equal to D - 0.65 * P. For ISO threads, the bolt pitch diameter Dp is equal to D - 0.6495191 * P. Use the Result Table option to display a table of bolt pitch diameter versus bolt diameter for the selected bolt schedule.

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CALCULATOR MODULE : AS 2885.1 Gas And Liquid Pipeline Schedule   ±

Calculate AS 2885.1 pipeline schedules for diameter, wall thickness, mass, weight, and stress.

For AS 2885.1, the fabrication tolerance is included in the design factor. The fabrication tolerance is not required provided that the tolerance is within the relevant specification.

Use the Result Table option to display schedule tables. Refer to the links below for other options.

Reference : Australian Standard AS 2885.1 : Pipelines - Gas And Liquid Petroleum Part 1 : Design And Construction (2015)

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CALCULATOR MODULE : Liquid Pipeline Pressure Loss From The Darcy Weisbach Equation   ±

Calculate single phase liquid pipeline pressure loss using the Darcy Weisbach equation.

`Po = P - (fd L / (ID) + K) 1/2 ρ V^2 + ρ g (zi - zo) `

where :

Po = outlet pressure
P = inlet pressure
fd = Darcy friction factor
L = piping length
ID = piping inside diameter
K = total friction loss factor for fittings
ρ = fluid density
V = fluid velocity
g = gravity constant
zi = inlet elevation
zo = outlet elevation

The Darcy friction factor can be calculated for

  • Hagen-Poiseuille laminar flow equation
  • original Colebrook White equation
  • modified Colebrook White equation
  • Prandtl Nikuradse smooth pipe equation
  • Blasius smooth pipe equation
  • Colebrook smooth pipe equation
  • Miller smooth pipe equation
  • Konakov smooth pipe equation
  • Von Karman rough pipe equation

For low Reynolds numbers Re < 2000, the fluid flow is laminar and the Darcy friction factor should be calculated using the Hagen-Poiseuille laminar flow equation. For high Reynolds numbers Re > 4000, the fluid flow is turbulent and the Darcy friction factor should be calculated using one of the turbulent flow equations. In the transition region 2000 < Re < 4000, the flow is unstable and the friction loss cannot be reliably calculated. The minor loss K factor is used to account for pipeline fittings such as bends, tees, valves etc..

The calculators use the Darcy-Weisbach pressure loss equation. The Fanning friction factor is used with the Fanning pressure loss equation. The transmission factors are commonly used for gas flow. The results for the Darcy and Fanning equations are identical provided that the correct friction factor is used.

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CALCULATOR MODULE : Gas Pipeline Pressure Loss From The Darcy Weisbach Equation   ±

Calculate single phase gas pipeline pressure loss using the Darcy Weisbach equation.

`Po = √(P^2 - m^2(fd.L / D + K) ls (16mma.SG.ZRoT)/(pi^2D^4) ) / (es) `
`ss = (z2 - z2) SG.mma.g / (Ro T Z) `
`es = e^(ss) `
`ls = (es^2 - 1) / (ss) `

where :

Po = outlet pressure
P = inlet pressure
fd = Darcy friction factor
L = piping length
D = piping inside diameter
K = total friction loss factor for fittings
m = gas mole flowrategas
mma = air molar mass
SG = gas specific gravity
Z = gas compressibility factor
Ro = universal gas constant
T = gas temperature
g = gravity constant
zi = inlet elevation
zo = outlet elevation
ss = elevation exponent
es = elevation pressure factor
ls = elevation length factor

For low Reynolds numbers Re < 2000, the fluid flow is laminar and the Darcy friction factor should be calculated using the Hagen-Poiseuille laminar flow equation. For high Reynolds numbers Re > 4000, the fluid flow is turbulent and the Darcy friction factor should be calculated using one of the turbulent flow equations. In the transition region 2000 < Re < 4000, the flow is unstable and the friction loss cannot be reliably calculated. The minor loss K factor is used to account for pipeline fittings such as bends, tees, valves etc..

The calculators use the Darcy-Weisbach pressure loss equation with the Darcy friction factor. The Fanning transmission factor combined with the Fanning equation is commonly used for gas flow. The results for the Darcy and Fanning equations are identical provided that the correct friction factor is used.

The gas specific gravity is the ratio of gas density over the density of dry air at base temperature and pressure. The compressibility factor is assumed to equal 1 at the base conditions. The gas specific gravity is proportional to the gas molar mass.

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CALCULATOR MODULE : API RP 14E Piping Wall Thickness   ±
CALCULATOR MODULE : Water Hammer Pipe Diameter Schedule   ±

Calculate transient flow pipe inside diameter and internal cross section area from pipe diameter and wall thickness.

Use the Result Table option to display a table of the inside diameter and cross section area versus either outside diameter or wall thickness.

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CALCULATOR MODULE : DNVGL RP F109 Check Value   ±
DATA MODULE : Line Pipe Diameter And Wall Thickness ( Open In Popup Workbook )   ±
DATA MODULE : Line Pipe Manufacturing Tolerance ( Open In Popup Workbook )   ±
DATA MODULE : Line Pipe Joint Length ( Open In Popup Workbook )   ±
DATA MODULE : ASME B31 Pipe And Flange Dimension ( Open In Popup Workbook )   ±

ASME B31.8 gas pipe and flange data values: pipe dimensions, flange dimensions, cover requirements, cold bends, burn through and location class.

Reference : ANSI/ASME B31.8 : Gas Transmission And Distribution Piping Systems

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    DATA MODULE : Flange Bolt ( Open In Popup Workbook )   ±
    DATA MODULE : Soil Properties : Density Uplift Coefficient Shear Strength And Friction Factor ( Open In Popup Workbook )   ±

    Soil properties, soil density, uplift coefficient, shear strength and friction factors.

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