Question

describe two ways of determining the difference in height between two places on a building site?

Answer 1

1) The hight difference of two places can be determined by the device called auto level and leveling staff. Initially place the staff on first position and auto level on second position and take the reading of staff through auto level. Again repeat the same step by placing the staff on second position and auto level on first position, take the reading and calculate the difference between the two readings.

2)Another method is used with horizontal level. The level is placed horizontally on the point where the height is calculated and the depth can measured by the ruler. This will be the height difference.