부산대학교 도서관

Maintaining correct pile’s verticality or inclination during installation, while ascertaining the safety of laborers and cost-effectiveness, is a key factor for construction survey. Traditional methods involve a significant amount of manual work, carried out using measurement rods and transits. Therefore, as more laborers are required, safety hazards also increase. Traditional Total Stations (TSs) have cross-hair reticles and are used for calculating coordinates and locations. Traditional cross-hair reticles in TSs are inadequate to measure structures that have pointed shapes, acute angles or no clearly identifiable center. Moreover, two laborers are required to take measurements when a prism is needed to indicate distances and angles. To solve these problems, a new reticle fashioned with concentric circles, was developed and incorporated to TSs. Moreover, new TS releases eliminate the need of prisms by developing a one-man operated device and incorporating the non-prismatic function. Baum Stations operation principle is based on aligning one of the circles in the Baum reticle to both sides of a pile. Measurements can be performed without centerline identifiers and at any inclination. Measurements can be performed even when there is insufficient distance to capture both sides of the pile, by capturing one point on the side of the pile.