Read about START-PROF pipe stress analysis software
This analysis allows approximate calculation of:
maximum allowable length of a straight buried pipe section based on strength requirements
distance to virtual restraint (point where there are no piping displacements)
maximum pipe end displacement.
In addition, load on anchors based on input section length can be calculated.
Input data can be copied using the
toolbar
icon and inserted into any other Start-Elements analysis by using the 
toolbar icon in
that file.
Property |
Description |
External diameter, D |
External pipe diameter, D |
Pipe wall thickness, S |
Nominal wall thickness |
External casing diameter, Dc |
External insulation casing diameter. If insulation is absent, set as 0 |
Casing thickness, SC |
Insulation casing thickness |
Depth, Z |
Depth (distance from soil surface to pipe axis) |
Ambient temperature |
Average wall (metal) temperature at the time when pipe segments become a single joined structure. More... |
Operation temperature |
Operation temperature in operation state. More... |
Uniform pipe weight |
Piping and adjoining equipment uniform weight. More... |
Uniform insulation weight |
Uniform insulation weight. More... |
Uniform product weight |
Uniform product weight. More... |
Operation pressure, P |
Operation pressure in operation state. Set for all standards except SNIP 2.05.06-85. More... |
Insulation type |
Armopenobeton, polymer, polyurethane, other. For polyurethane, insulation casing diameter DC and casing thickness SC are selected automatically from the database based on pipe diameter D. For other insulation types, these data must be input manually |
Backfill soil number |
Trench soil number, can be selected from the soil database. |
Base soil number |
Base (undisturbed) soil number, can be selected from the soil database. |
Steel grade |
Pipe material from the materials database |
After analysis, the following output is displayed
Property |
Description |
Maximum extension of compensation zone |
Pipe end displacement after extension |
Friction |
Uniform friction force of pipe on soil |
Achor Load |
Maximum allowable longitudinal force acting on the anchor |
Pipeline maximum length |
Maximum allowable length of a straight section without expansion joints based on strength requirements |
Pipeline virtual anchor length, La |
Distance from pipe end to the point where pipe displacement is equal to 0. It's sliding zone length La. See also |
Maximum stress |
Maximum equivalent pipe stress |
Allowable stress |
Allowable stress for GOST R 55596-2013 and RD 10-400-01 1.5[σ], and design resistance for SNIP 2.05.06-85
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Pipe. Buried > Pipe Elongation
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