Glossary
Level measurement and verification - Introduction

Accuracy

The closeness of agreement between a measured value and a true value of a measurand. Measurement accuracy is not a quantity and cannot be expressed numerically. A measurement is sometimes said to be more accurate if it provides a smaller measurement error.

Weight by volume; Unit Weight

Specific weight is the weight per unit volume of a material. The symbol for specific weight is ? (the Greek letter gamma). The specific weight of water at the Earth's surface at 5°C is 9,807 N/m ³ . The relationship between specific weight and density is the same as that between weight and mass.

Angle de talus; Angle of Repose

The natural angle of slope is the angle made by the slope of the heap under which the material being dumped...