Estimation is the process of finding an estimate or approximation, which is a value that is usable for some purpose even if input data may be incomplete, uncertain, or unstable. The value is nonetheless usable because it is derived from the best information available.#estimator #construction #estimating #quantitysurveyor #projectmanagement #building #quantitysurveyor #quantitysurveying #estimatingservices #quantitysurveyors #ISCODES #IS #Indianstandard #rules #BDA #IEA #COA #aecearth #swifterzacademy #swifterz