When the useful life of a building is over, the dismantled materials (such as steel, bricks, etc.) can be sold to retrieve a certain value. What is this value called?

Water charges are usually taken as what percentage (%) in the rate analysis of an item?

Due to a change in price level, a revised estimate is prepared if the total expenditure exceeds the sanctioned estimate by more than:

Which of the following methods is used for the estimation of depreciation of a building?