AS 2885.1 Pipeline Bend Thickness

Calculate AS 2885.1 pipeline bend minimum fabrication thickness.

Bend thickness checks are not required for cold field bends from straight pipe (ripples should be considered). For bends formed by other means such as induction bending, the fabricated thickness should be checked on both the inside of the bend (intrados), and the outside of the bend (extrados).

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

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AS 2885.1 Gas And Liquid Pipeline Schedule Calculation Module
AS 2885.1 Pipeline Allowable Stress Calculation Module
AS 2885.1 Pipeline Bolt Torque Calculation Module
AS 2885.1 Pipeline Branch Reinforcement Calculation Module
AS 2885.1 Pipeline Cold Bend Buckle 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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Links : ±

CALCULATOR : AS 2885.1 Section 5.4.4 Pipeline Minimum Bend Thickness [PLUS] ±

Calculate pipeline minimum bend thickness from bend radius (AS 2885.1 section 5.4.4).

The minimum bend fabrication thickness is calculated for either the outside of the bend (extrados), or the inside of the bend (intrados). The bend radius can be specified either as a radius, or as the bend radius over pipe diameter ratio.

Tool Input

schdtype : Line Pipe Schedule Type
diamtype : Bend Diameter Type
- ODu : User Defined Outside Diameter
syutype : Line Pipe Stress Type
mattype : Material Type
- SMYSu : User Defined Specified Minimum Yield Stress
satype : Allowable Stress Calculation Type
- Fdu : User Defined Allowable Stress Factor
- Sau : User Defined Allowable Stress
rbtype : Bend Radius Type
- Ru : User Defined Bend Radius
- R/Du : User Defined Bend R / D Ratio
bendtype : Wall Thickness Position
G : Corrosion Allowance
Pd : Design Pressure

Tool Output

Fd : Allowable Stress Factor
Fp : Bend Thinning Factor
OD : Bend Outside Diameter
R : Bend Center Line Radius
R/OD : Bend Radius Over Pipe Diameter Ratio
SMYS : Specified Minimum Yield Stress
Sa : Allowable Stress
rm : Bend Mean Radius
tm : Bend Minimum Fabrication Wall Thickness
to : Mean Pressure Design Wall Thickness
tp : Bend Minimum Pressure Design Wall Thickness

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