Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Pipe Equations

Calculate cross-sectional areas, weight of empty pipes, weight of pipes filled with water, inside and outside surface areas.

Sponsored Links

Pipe - diameter and cross sectional area

Cross Sectional inside Pipe Area

Cross-sectional inside area of a pipe can be calculated as

Ai = π (di / 2)2

   = π di 2 / 4                                 (1)

where

Ai = cross-sectional inside area of pipe (m2, in2)

di = inside diameter (m, in)

Cross Sectional Pipe Wall Area

The cross-sectional wall area - or area of piping material - can be calculated as

Am = π (do / 2)2 - π (di / 2)2

   = π (do 2 - di 2) / 4                               (2)

where

Am = cross-sectional wall area of pipe (m2, in2)

do = outside diameter (m, in)

Weight of Empty Pipes

Weight of empty pipes per unit length can be calculated as

wp = ρm Am

    = ρm (π (do / 2)2 - π (di / 2)2

    = ρm  π (do2 - di2) / 4                              (3)

where

wp = weight of empty pipe per unit length (kg/m, lb/in)

ρs = density of pipe material (kg/m3, lb/in3)

Weight of Liquid in Pipes

Weight of liquid in pipes per unit length can be calculated as

wl = ρl A

    = ρl π (di / 2)2 

    = ρl π di2 / 4                                   (4)

where

wl = weight of liquid in pipe per unit length of pipe (kg, lb)

ρl = density of liquid (kg/m3, lb/in3)

Weight of Pipe filled with Liquid

Weight of pipe filled with liquid per unit length can be calculated as

w = wl + wp                          (5)

where

w = weight of pipe and liquid per unit length of pipe (kg, lb)  

Outside Surface Area of Pipes

Outside surface area of steel pipes per unit length can be calculated as

Ao = 2 π (do / 2)

     =  π do                            (6)

where

Ao = outside area of pipe - per unit length of pipe (m2, in2)

Inside Surface Area of Pipes

Inside surface area of steel pipes per unit length can be calculated as

Ai = 2 π (di / 2)

     =  π di                             (7)

where

Ai = inside area of pipe - per unit length of pipe (m2, in2)

Sponsored Links

Related Topics

  • Dimensions

    Sizes and dimensions of pipes and tubes, and their fittings - inside and outside diameter, weight and more.

Related Documents

Sponsored Links

Search

Search is the most efficient way to navigate the Engineering ToolBox.

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

Translate this Page

Translate this page to Your Own Language .

About the Engineering ToolBox!

Privacy Policy

We don't collect information from our users. More about

Citation

This page can be cited as

  • The Engineering ToolBox (2005). Pipe Equations. [online] Available at: https://www.engineeringtoolbox.com/pipes-equations-d_873.html [Accessed Day Month Year].

Modify the access date according your visit.

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Unit Converter

















































2.19.10

Sponsored Links
.