What are the different types of leveling in construction?

In construction, the main types of leveling include differential leveling, which determines the elevation difference between points; spirit leveling, which uses a leveling instrument and a graduated staff to measure height differences; and electronic leveling, which employs digital instruments for increased accuracy and efficiency. Additionally, trigonometric leveling uses angles and distances to calculate elevations, while barometric leveling utilizes atmospheric pressure changes to estimate height differences. Each method is chosen based on project requirements, accuracy needs, and site conditions.