AS 2885.1 Pipeline Cold Bend Buckle

Calculate AS 2885.1 pipeline buckle wavelength and maximimum allowable buckle height for cold field bends.

The approximate peak to peak buckle wavelength can be calculated for cold field bends. The maximum allowblae buckle height is 5% of the buckle wavelength.

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

Change Module :

AS 2885.1 Gas And Liquid Pipeline Schedule Calculation Module
AS 2885.1 Pipeline Allowable Stress Calculation Module
AS 2885.1 Pipeline Bend Thickness Calculation Module
AS 2885.1 Pipeline Bolt Torque Calculation Module
AS 2885.1 Pipeline Branch Reinforcement Calculation Module
AS 2885.1 Pipeline Collapse Pressure Calculation Module
AS 2885.1 Pipeline Combined Stress Calculation Module
AS 2885.1 Pipeline Design Pressure Calculation Module
AS 2885.1 Pipeline Fatigue Stress Calculation Module
AS 2885.1 Pipeline Fluid Velocity And Flow Rate Calculation Module
AS 2885.1 Pipeline Fluid Volume And Mass Calculation Module
AS 2885.1 Pipeline Fracture Toughness Calculation Module
AS 2885.1 Pipeline Hoop Stress Calculation Module
AS 2885.1 Pipeline Hydrotest Pressure Calculation Module
AS 2885.1 Pipeline Local Pressure Calculation Module
AS 2885.1 Pipeline Mass And Weight Calculation Module
AS 2885.1 Pipeline Maximum Velocity Calculation Module
AS 2885.1 Pipeline Road And Rail Crossing Calculation Module
AS 2885.1 Pipeline Wall Thickness Calculation Module
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More Pipeline Cold Bend Modules

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Links : ±

CALCULATOR : AS 2885.1 Appendix S Pipeline Buckle Wavelength [FREE] ±

Calculate pipeline buckle peak to peak wavelength for cold field bends (AS 2885.1 appendix S).

Small pipeline buckles which form during cold field bending are generally acceptable provided pressure cycling is minimised.

Tool Input

schdtype : Line Pipe Schedule Type
diamtype : Diameter Type
- ODu : User Defined Outside Diameter
- IDu : User Defined Inside Diameter
wtntype : Wall Thickness Type
- tnu : User Defined Wall Thickness
modptype : Material Type
- νu : User Defined Pipe Poisson's Ratio

Tool Output

Lb : Buckle Peak To Peak Wavelength
od : Pipe Nominal Outside Diameter
pp : Pipe Poisson Ratio
tn : Pipe Nominal Wall Thickness

CALCULATOR : AS 2885.1 Appendix S Pipeline Allowable Buckle Height From Buckle Wavelength [FREE] ±

Calculate pipeline allowable buckle height from buckle wavelength for cold field bends (AS 2885.1 section 10.6.3 and appendix S).

Small pipeline buckles generally form during cold field bending. Buckles are acceptable provided that the buckle height is less than 5% of the buckle wavelength. The buckle wavelength can either be calculated or measured.

Tool Input

schdtype : Line Pipe Schedule Type
diamtype : Diameter Type
- ODu : User Defined Outside Diameter
- IDu : User Defined Inside Diameter
wtntype : Wall Thickness Type
- tnu : User Defined Wall Thickness
modptype : Material Type
- νu : User Defined Pipe Poisson's Ratio
lbtype : Buckle Wavelength Type
- Lbu : User Defined Buckle Wavelength

Tool Output

Hmax : Buckle Maximum Allowable Height
Lb : Buckle Peak To Peak Wavelength
od : Pipe Nominal Outside Diameter
pp : Pipe Poisson Ratio
tn : Pipe Nominal Inside Diameter

CALCULATOR : AS 2885.1 Section 5.4.3 Pipeline Allowable Stress [FREE] ±

Calculate pipeline allowable stress from specified minimum yield stress (SMYS) and design factor (AS 2885.1 section 5.4.3).

Use the Result Table option to display a table of SMYS and allowable stress versus material grade for the selected material schedule.

Tool Input

syutype : Line Pipe Stress Type
mattype : Material Type
- SMYSu : User Defined Specified Minimum Yield Stress
dfactype : Allowable Stress Factor Type
- Fdu : User Defined Allowable Stress Factor

Tool Output

Fd : Allowable Stress Factor
SMYS : Yield Stress
Sa : Allowable Stress

CALCULATOR : AS 2885.1 Pipeline Diameter And Wall Thickness Schedule [FREE] ±

Calculate AS 2885.1 pipeline diameter and wall thickness.

The pressure design wall thickness is equal to the nominal wall thickness minus the corrosion allowance. The fabrication allowance is accounted for in the design factor (an additional fabrication allowance is required in some cases). Select the pipe schedule (NPS or ISO etc), pipe diameter and wall thickness, or use the user defined option. Use the Result Table option to display the pipe schedule with nominal wall thickness and pressure design wall thickness for the selected diameter.

Tool Input

schdtype : Line Pipe Schedule Type
diamtype : Line Pipe Diameter Type
- ODu : User Defined Outside Diameter
- IDu : User Defined Inside Diameter
wtntype : Wall Thickness Type
- tnu : User Defined Wall Thickness
c : Wall Thickness Corrosion Allowance

Tool Output

ID : Nominal Inside Diameter
OD : Nominal Outside Diameter
OD/tn : Diameter Over Wall Thickness Ratio
tn : Nominal Wall Thickness
tp : Pressure Design Wall Thickness