Learn about START-PROF pipe stress analysis software
Proper polyurethane foam insulation stress analysis requires input of backfill soil properties and cushion selection if applicable.
For known burial depth analysis, disable depth flag and enter specific depth value.
For maximum allowable depth determination, enable depth flag to calculate depth meeting all insulation strength criteria.
Copy input data using 
toolbar icon.
Paste data into other Start-Elements analyses using 
toolbar icon.
Detailed information: Polyurethane (PUR) Insulation Stress Analysis.
1 - backfill soil, 2 - expansion cushion, 3 - foundation soil
| Parameter | Description |
External diameter, D |
Pipe outer diameter |
Wall thickness, S |
Nominal pipe wall thickness |
Casing diameter, Dc |
Insulation casing outer diameter. Set to 0 for uninsulated pipe |
Casing thickness, Sc |
Insulation casing wall thickness |
Ambient temperature |
Average pipe wall temperature during system integration |
Operation temperature |
Design operating temperature |
Depth, Z |
Distance from ground surface to pipe centerline |
Pipe weight |
Uniform pipe and component weight distribution |
Insulation weight |
Uniform insulation weight distribution |
Product weight |
Uniform fluid content weight distribution |
Backfill soil type |
Trench backfill selection from soil database |
Base soil type |
Native foundation soil from soil database |
Operation pressure, P |
Design operating pressure. Required for all standards except SNIP 2.05.06-85 |
Steel grade |
Pipe material from materials database |
Insulation type |
Insulation material: armopenobeton, polymer, polyurethane, other |
Analysis output includes:
Strength condition compliance status
Maximum tangential shear stress in PUR and code allowable value
Maximum axial shear stress and code allowable value
Maximum equivalent stress and code allowable value
Detailed information: Polyurethane (PUR) Insulation Stress Analysis.
Pipe. Buried > Insulation Strength