Formula Symbols - U
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Formula Symbols
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U
| Symbol | Greek Symbol | Definition | English | Metric | SI | Value |
|---|---|---|---|---|---|---|
| \(UTS\) | - | ultimate tensile stress | \(\large{ \frac{lbf}{in^2} }\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| \(l_{ur}\) | - | unrestrained pipe length | \(ft\) or \(in\) | \(m\) or \(mm\) | \(m\) or \(mm\) | - |
| \(K_1\) | - | upstream resistance coefficient | dimensionless | - | ||
| \(L_b\) | - | unbraced length of a steal beam in LRFD design | \(ft\) or \(in\) | \(m\) or \(mm\) | \(m\) or \(mm\) | - |
| \(p_u\) | - | underwater pressure | \(\large{ \frac{lbf}{in^2} }\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| \(\gamma\) | gamma | unit weight | \(\large{ \frac{lbm}{ft^3} }\) | \(\large{ \frac{N}{m^3} }\) | \(N-m^{-3}\) | - |
| \(\gamma_s\) | gamma | unit weight of solid | \(\large{ \frac{lbm}{ft^3} }\) | \(\large{ \frac{N}{m^3} }\) | \(N-m^{-3}\) | - |
| \(\gamma_w\) | gamma | unit weight of water | \(\large{ \frac{lbm}{ft^3} }\) | \(\large{ \frac{N}{m^3} }\) | \(N-m^{-3}\) | - |
| \(R\), \(\;R*\) | - | universal gas constant | \(\large{ \frac{lbf-ft}{lbmol-R} }\) | \(\large{ \frac{J}{kmol-K} }\) | \(J-kmol-K^{-1}\) | \(8.314\;462\;618\;153\;24\) \(\large{ \frac{J}{kmol-K} }\) |
| \(G\) | - | universal gravitational constant | \(\large{\frac{lbf-ft^2}{lbm^2}}\) | \(\large{\frac{N - m^2}{kg^2}}\) | \(N - m^2-kg^{-2}\) | \(6.674\;30\;x\;10^{-11}\) \(\large{\frac{N - m^2}{kg^2}}\) |
| \(USLE\) | - | universal soil loss | \(tons-acre-yr\) | \(tonnes-hectare-yr\) | \(tonnes-hectare-yr\) | - |
| \(l_{ur}\) | - | unrestrained pipe expansion | \(ft\) | \(m\) | \(m\) | - |
| \(U\) | - | Ursell number | dimensionless | - | ||
| Symbol | Greek Symbol | Definition | English | Metric | Value | |
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