Abstract
The concrete-wall-climbing hammering tester, "Rising Cross II" has been improved. This Rising Cross II is a robot which climbs and tests concrete structure. The height which the Rising Cross II could test was limited to five meters because the bundle of the power cables was heavy. Each of the power units had a power cable which was connected to a controller on the ground. Then, the mount of cables has been reduced by installing a switching unit on Rising Cross II. Furthermore, pressure sensors have been installed on the suction cups to improve the reliability of the adhesion. The new type of the climbing hammering tester, Rising Cross III can climb and test concrete walls over ten meters.