Calculate API RP 1111 pipeline unit mass and unit weight including contents and buoyancy for multi layer piping.
Unit weight can be calculated for either dry empty, dry full, wet empty, or wet full pipelines. Select the pipe schedule (NPS or ISO), pipe diameter and wall thickness, or use the user defined option. The line pipe is the first inside layer. The line pipe wall thickness is either taken from the selected schedule value, or the user input wall thickness is used if the user defined wall thickness option is selected. Details for each layer are displayed in the output view at the bottom of the page. Use the Result Table option to display a table of pipe mass and weight 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 : Line Pipe Wall Thickness Type
- tnu : User Defined Wall Thickness
- wltype : Pipe Weight Type
- WTi : Pipe Liner Wall Thickness
- ρi : Pipe And Liner Density
- WTo : Pipe Coating Wall Thickness
- ρo : Pipe Coating Density
- ρf : Contents Fluid Density
- ρb : Displaced Fluid Density
Tool Output
- IID : Pipe Inner Diameter Including Liners
- OD : Line Pipe Nominal Diameter
- OOD : Pipe Outer Diameter Including Coatings
- SG : Pipe Specific Gravity Relative To Displaced Fluid
- mb : Displaced Fluid Mass Per Length
- mc : Contents Fluid Mass Per Length
- mi : Inner Layers Total Unit Mass
- mo : Outer Layers Total Unit Mass
- mp : Pipe Mass Per Length Including Liner And Coating
- tn : Line Pipe Nominal Wall Thickness
- w : Pipe Total Weight Per Length Including Contents and Buoyancy