// multi-utility computation suite · offline · instant · precise
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sci.differential-leveling-closure Calculator
Calculates closure error and allowable tolerance for differential levelling surveys using the standard formula: E_allowable = k√n mm, where n is the number of setups. UK second-order levelling tolerance: 12√k mm where k is distance in km — systematic errors in rod readings and refraction affect long-precision lines.
Inputs
Bs Sum M
Reference formula or conversion factor shown for context.
Fs Sum M
Reference formula or conversion factor shown for context.
Hi Start M
Reference formula or conversion factor shown for context.
Distance Km
Separation between two points or total path length. Check that units are consistent throughout the calculation.
Results
calculated end elevation (m)
The value at the specified point or condition.
misclosure (m)
LOS (length of stay) -- the number of days from admission to discharge. A key hospital efficiency metric.
allowable misclosure (m)
LOS (length of stay) -- the number of days from admission to discharge. A key hospital efficiency metric.
survey closure
LOS (length of stay) -- the number of days from admission to discharge. A key hospital efficiency metric.
allowable = 12mm·√K (3rd order)
Reference formula or conversion factor shown for context.