Subject
A pipe is used to transport fluids from one location to another.
Its ability to do this safely depends upon its capacity to cope with its operational environment and end constraints.
I.e. buoyancy, internal and external relative pressures, end conditions (open or capped) and externally applied loading (forces, moments, etc.), all of which will generate primary and shear stresses in the pipe wall.
These primary and shear stresses must be combined for the purposes of fatigue and design.
The pipe strength calculator determines the reactions on a pipe due to its internal and external environment and loading conditions.
Whilst Pipe is very comprehensive, it is unnecessary to complete all input data if you are only looking for specific outputs, such as hoop stress or buoyancy for which guidance is provided in the technical help page.
The pipe strength calculator provides the structural properties of the pipe, along with stresses, forces, buoyancy and physical distortion resulting from the above conditions.
The output data from Pipe can be exported to CalQlata’s Combined Stress calculator where the combined stress at your designated radius will be calculated.
For help using this calculator see Technical Help
Pipe Strength Calculator  Options
The input and output data are the same for both calculation options in Pipe :
You enter: 
and the pipe strength calculator will provide: 


Mass of the pipe (per unit length), incl. added mass

Mass of the fluid inside the pipe (per unit length)

Buoyancy (per unit length)

Cross section area of the pipe wall

Cross section area of the pipe bore

Second moment of area

Polar moment of inertia

Hoop stress

Longitudinal stress

Radial stress

Bending moment stress

Shear stress from pressure

Shear stress from shear force

Shear stress from torsion

Shear stress from pressure and bending

Change in internal diameter

Change in external diameter

Change in length ('Closed Ends' only)

Axial force (pressure) ('Closed Ends' only)

Axial force (temperature) ('Closed Ends' only)

Axial force (total) ('Closed Ends' only)

Open Ends
Both ends of the pipe are open thereby eliminating direct longitudinal stress & growth and end cap forces.
No Axial Growth
Both ends of the pipe are open but longitudinal growth is stopped thereby inducing direct longitudinal compressive stress and end cap forces.
Closed Ends
Both ends of the pipe are closed thereby inducing direct longitudinal tensile stress & growth and end cap forces.
Check minimum system requirements