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Hoses and umbilicals: Mass per unit length |
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Hoses and umbilicals: Mass per unit length |
The line type wizard derives mass for hoses and umbilicals from their diameter.
For each type of hose the mass per metre $m$ is estimated as a function of inner diameter \begin{equation} m = \begin{cases} 0.7253\, I\!D\ \text{ te/m} &\text{for high pressure } (55\%-145\%) \\ 0.3642\, I\!D\ \text{ te/m} &\text{for low pressure } \\ 0.1844\, I\!D\ \text{ te/m} &\text{for fold-flat } \end{cases} \end{equation}
For umbilicals, mass per metre $m$ is estimated as a function of outer diameter \begin{equation} m = 0.7253\, O\!D\ \text{ te/m } (35\%-170\%) \end{equation}